How do I make an online roadside assistance call?

Press button 3 on the online roadside assistance call button located in the front headliner. The red LED in the button will light up and the call will be placed. If pressed accidentally, simply press the button again.

What should I do if the emergency call function shows a fault message?

If the indicator lamp lights up with a fault message, you cannot make an emergency call. Drive to a qualified workshop as soon as possible and have the fault rectified. If the function is only partially available, some functions may not work (such as voice calls), but you can still attempt an emergency call.

What personal data does the EU eCall system collect and process?

The EU eCall system may only collect and process the following data: vehicle identification number, vehicle type (passenger car or light goods vehicle), type of vehicle power (petrol/diesel/electric/hydrogen), the last three locations of the vehicle and direction of travel, log file of automatic system activation and its time stamp, version and ID of log file, number of vehicle occupants, and location plausibility.

How do I search for a navigation destination?

You can use internet search by entering search terms and selecting from suggestions provided by the search engine, or use hybrid search to enter destination details in any order (e.g. Forest Road 20 London). You can also search for special destinations or contacts. Alternatively, you can select from last destinations, favourites, contacts, or received destinations from the myAudi app.

Can I add multiple destinations during navigation?

Yes, you can enter stopovers while route guidance is active. The stopovers and tour plan display all destinations in a list. You can add, move, or delete stopovers as needed during your journey.

What warning does the manual give about following navigation recommendations?

The route calculated by the navigation system is a recommendation. Always adhere to locally applicable traffic laws and regulations. If the recommended route contradicts locally applicable traffic laws and regulations, these always take precedence as failure to do so creates a risk of accident.

What engine oil should I use to top up my Audi A8?

Use one of the oils that meet the engine oil standard specified on the sticker located at the front of the engine compartment. For petrol engines: VW 504 00, ACEA C3, ACEA C4, API SP or ILSAC GF-6A. For diesel engines: VW 507 00, ACEA C3, ACEA C4 or API CK-4. If the specified oil is not available, you can add a maximum of 0.5 litres of oil corresponding to these standards once between oil changes in an emergency only. Audi recommends using engine oil from Audi Genuine Parts.

What should I do if the 'Please warm up engine' message appears?

Drive in transmission position S, run the engine at high rpm speeds but avoid using full throttle. You should drive for at least 30 minutes; however the indicator lamp may not go out during this period. Repeat the procedure at your convenience. If the indicator lamp does not disappear after several runs, drive to a qualified workshop and have the fault rectified. When responding to this message, you must adjust your speed to suit the weather, road, terrain and traffic conditions, and never disregard local traffic regulations.

How do I check the engine oil level?

Park the vehicle on a level surface, switch off the warm engine, switch on the ignition again without starting the engine, and wait about 5 minutes for the engine oil to drain back into the sump. On the MMI home screen, select CAR > Settings & service > Oil level and read off the oil level on the display. Top up the engine oil if the bar in the oil level display is near the 'min' mark.

What coolant should I use and in what concentration?

Use a mixture of distilled water and the specified coolant additive G12evo TL 774 L. The concentration depends on expected winter temperatures: for hot regions use 40-45% additive (frost protection minimum -25°C/-13°F), and for cold regions use 50-55% additive (frost protection maximum -40°C/-40°F). Have a qualified workshop check the cooling system before winter to ensure adequate anti-freeze concentration.

What should I know about the brake fluid in my vehicle?

The brake fluid level must be between the MIN and MAX marks on the reservoir located underneath a cover in the engine compartment on the driver's side. The brake fluid must comply with the VW 501 14 standard, or alternatively a high-quality brake fluid complying with FMVSS 116 DOT 4, Class 6 (ISO 4925). If the brake fluid level is under the MIN mark, the effectiveness of the brakes and the safety of the vehicle may be impaired - do not drive on and seek professional assistance. Brake fluid must be changed at regular intervals by a qualified workshop.

Can I replace the 12-volt vehicle battery myself?

No. Any work on the battery must be carried out by a qualified workshop. The 12-volt vehicle battery has been developed for use in its installation location and is equipped with safety features. When replacing it, only maintenance-free 12-volt lead batteries to standards TL 825 06 and VW 7 50 73 (from October 2014 or later) may be used with the same specifications and dimensions as the factory-fitted battery. The vehicle electronics must be calibrated as part of the replacement procedure, and only qualified workshops have the equipment required to perform this correctly.

Model years 2021–2026EU marketManual language: en

Audi A8 D5.5 (2021–2026) owner's manual guide

Select your model year

202120222023 2024 2025 2026

This guide summarizes the official owner's manual for the Audi A8 D5.5, model years 2021–2026. It is an original overview - not a reproduction of the manual - covering what each chapter contains and answers to common owner questions, grounded in the manual's content with section and page references.

OwnersAsk is an independent guide and is not affiliated with Audi. For official documentation and support, visit audi.com.

Ask this manual

Answers come only from the Audi A8 D5.5 (2021–2026) owner's manual, with section and page references. Ask in any language.

What the manual covers(262)

Notes on this Owner's Manualp. 8
Quick referencep. 9
Getting startedp. 9
Online informationp. 9
FAQsp. 9
Front cabinp. 11
Overview of warning and indicator lampsp. 12
Displays and controlsp. 18
Instrument clusterp. 18
Overview of instrument clusterp. 18
How to use the multi-function steering wheelp. 19
Selecting the displayp. 19
Coolant temperature gaugep. 20
Rev counterp. 20
Power meterp. 21
Mileage recorderp. 21
Outside temperature displayp. 21
Engine oil temperature gaugep. 21
Boost displayp. 22
Vehicle functionsp. 22
Touch displaysp. 24
General instructions for using the touch displaysp. 24
Multi Media Interfacep. 26
Rear Seat Remotep. 32
Screens for the rear seatsp. 34
Head-up displayp. 38
Descriptionp. 38
Speech dialogue systemp. 39
General informationp. 39
Descriptionp. 39
External voice control functionp. 40
Global functionsp. 41
Other function selector buttonsp. 41
Setting offp. 42
Personal settingsp. 42
Usersp. 42
Opening and closingp. 44
Central locking systemp. 44
Keysp. 51
Boot lidp. 55
Child lockp. 59
Electric windowsp. 60
Panoramic glass roofp. 61
Valet parkingp. 62
Garage door openerp. 63
Lights and visionp. 66
Exterior lightsp. 66
Interior lightsp. 71
Clear visionp. 72
Windscreen wipersp. 74
Sitting correctly and safelyp. 77
Ensuring the correct seating positionp. 77
Front seatsp. 77
Rear seatsp. 81
Steering wheelp. 84
Head restraintsp. 85
Seat beltsp. 87
Memory functionp. 90
Airbag systemp. 91
Child restraint systemsp. 94
Storage and conveniencep. 100
Ashtraysp. 100
Cigarette lighterp. 100
Power sourcesp. 100
Cup holdersp. 101
Storage compartmentsp. 102
Luggage compartmentp. 104
Roof carrierp. 106
Heating and coolingp. 108
Air conditionerp. 108
Steering wheel heatingp. 113
Auxiliary heating/ventilationp. 113
Auxiliary air conditionerp. 116
Fluids in the air conditionerp. 117
Drivingp. 119
Starting the vehiclep. 119
Driving the vehiclep. 121
Enginep. 127
Start/stop systemp. 131
Brakesp. 132
Electromechanical parking brakep. 134
Special driving situationsp. 136
Handling dynamicsp. 138
Audi drive selectp. 138
Suspensionp. 139
Steeringp. 141
Four-wheel drive (quattro)p. 142
Electronic stabilisation controlp. 143
High-voltage systemp. 146
General informationp. 146
Charging the high-voltage batteryp. 148
Charging settingsp. 154
Charging equipmentp. 155
Towing a trailerp. 165
Driving the vehicle with a trailer or caravanp. 165
Swivelling towing bracketp. 168
Assistance systemsp. 173
Driver assist systemsp. 173
General informationp. 173
Sensors for detecting the vehicle's surroundingsp. 174
Driver assist menup. 177
Parking aid menup. 177
Driver informationp. 179
Speed warningp. 179
Camera-based traffic sign recognitionp. 179
Traffic light informationp. 182
Fatigue warningp. 183
Distraction warningp. 184
Lap timerp. 185
Night vision assistp. 186
Driver assistancep. 189
Speed regulation systemsp. 189
Efficiency assistp. 191
Adaptive cruise assistp. 193
Distance warningp. 206
Lane departure warningp. 207
Audi pre sensep. 209
Side assistp. 213
Exit warningp. 215
Intersection assistp. 216
Emergency assistp. 217
Parking and manoeuvringp. 220
Introductionp. 220
Parking aid plusp. 221
Reversing camera/surround view camerasp. 223
Rear cross-traffic assistp. 227
Assisted parkingp. 228
Park assistp. 231
Park assist plusp. 233
Remote-controlled parkingp. 236
Manoeuvre assistp. 241
Infotainmentp. 243
Telephonep. 243
Introductionp. 243
Setting upp. 243
Using the Audi phone boxp. 245
Using the Rear Seat Remotep. 247
Using the telephonep. 248
Settingsp. 252
Messagesp. 253
Troubleshootingp. 254
Audi connectp. 256
General informationp. 256
Audi connect infotainmentp. 257
Establishing a Wi-Fi connectionp. 257
Using the Wi-Fi hotspotp. 257
Audi connect infotainment servicesp. 258
Functions on demandp. 258
Audi connect appsp. 259
Audi connect vehicle control servicesp. 259
Settingsp. 260
Troubleshootingp. 261
Emergency callp. 262
Overviewp. 262
Emergency callp. 262
Online roadside assistance callp. 264
Information on data processingp. 265
Information on third-party services and other services with added benefitp. 266
Navigationp. 267
Calling up the navigation menup. 267
myAudi navigationp. 267
Entering a destinationp. 268
Stopping route guidancep. 271
Mapp. 271
Predictive route guidancep. 273
Alternative routesp. 274
Further functionsp. 274
Satellite mapp. 275
Electric rangep. 276
Map updatep. 276
Traffic informationp. 277
Hazard alertsp. 278
Settingsp. 279
Radiop. 281
General informationp. 281
Radio functionsp. 282
Online radiop. 284
Options and settingsp. 286
Troubleshootingp. 287
Mediap. 288
General informationp. 288
DVD drivep. 288
Bluetooth audio playerp. 289
Online mediap. 289
Multimedia connectionsp. 290
Playing mediap. 291
Options and settingsp. 295
Supported media and file formatsp. 296
Troubleshootingp. 298
TVp. 299
General informationp. 299
TV functionsp. 300
Further settingsp. 302
Interferencep. 303
Receiving encrypted TV channelsp. 303
In-car experiencep. 305
Themesp. 305
Smartphone interfacep. 306
Setting upp. 306
Troubleshootingp. 307
Further settingsp. 308
System settingsp. 308
Software updatep. 309
Connected devicesp. 309
Legal informationp. 310
Service and carep. 312
Checking and topping up fluidsp. 312
Fuelp. 312
Filling the tankp. 313
Selective catalytic reduction (AdBlue/DEF)p. 316
Emission control systemp. 320
Engine compartmentp. 322
Engine oilp. 326
Cooling systemp. 328
Brake fluidp. 331
Electrical systemp. 332
Batteryp. 332
Windscreen washer systemp. 336
Service interval displayp. 336
Wheelsp. 338
Tyres and rimsp. 338
Tyre pressure loss indicatorp. 343
Tyre pressure monitoring systemp. 345
Run-flat tyresp. 347
Care of vehicle and cleaningp. 349
General informationp. 349
Washing the vehiclep. 349
Information on cleaning and carep. 350
Taking the vehicle out of servicep. 355
Self-helpp. 356
Mobilityp. 356
General informationp. 356
Equipmentp. 356
Tyre repair kitp. 357
Changing a wheelp. 359
Compact temporary spare wheelp. 363
Jump-startingp. 363
Towing awayp. 365
Fuses and bulbsp. 368
Fusesp. 368
Bulbsp. 372
Customer informationp. 373
Data protectionp. 373
Information on data protectionp. 373
Image recordingp. 373
Memoryp. 373
Information transmittedp. 375
Accessories and modifications to the vehiclep. 378
Maintenance, repairs and modifications to the vehiclep. 378
Accessories and replacement partsp. 379
Position for a toll device on the windscreenp. 380
Technical datap. 381
Identification datap. 381
Vehicle datap. 381
Other informationp. 384
Online Car Carep. 384
Trademarks and licencesp. 384
Information according to EU chemicals regulation REACHp. 384
Information on waste disposalp. 384
Radio equipmentp. 385
Additional customer informationp. 388
Indexp. 390

Dashboard warning lights(82)

What each warning light means, extracted from the manual. Always confirm the full procedure on the cited page or with a workshop.

Light	Meaning	What to do	Page
Central warning/indicator lamp	Indicates functions or faults in the vehicle	Note information displayed in instrument cluster; use multi-function steering wheel controls to view driver messages on second display tab	p. 12
Cooling system warning lamp (red)	Cooling system malfunction	Refer to pages 18, 326, 327	p. 13
Seat belt warning lamp (red)	Seat belt not fastened or issue detected	Refer to page 87	p. 13
Brake system warning lamp (red)	Brake system malfunction	Refer to pages 132, 329	p. 13
Engine oil pressure warning lamp (red)	Engine oil pressure low	Refer to page 324	p. 13
AdBlue warning lamp (red)	AdBlue level critical	Refer to page 315	p. 13
Bonnet warning lamp (red)	Bonnet is open or not properly closed	Refer to page 323	p. 13
Engine speed governing lamp (yellow)	Engine speed is being limited	Refer to pages 18, 129, 326	p. 13
Brake pads warning lamp (yellow)	Brake pads worn	Refer to page 132	p. 14
Tyre pressure warning lamp (yellow)	Tyre pressure issue detected	Refer to pages 342, 344	p. 15
Dipped headlights indicator lamp	Dipped headlights are activated	Refer to page 64	p. 15
Display deactivation warning lamp	Serious system fault has occurred and display is deactivated	Stop the vehicle safely and seek professional assistance	p. 18
Coolant temperature warning lamp	Coolant temperature is too high	Refer to page 326 for guidance; stop safely and seek professional assistance if the display indicates engine overheating risk	p. 20
Engine speed governing indicator lamp	Engine speed is automatically governed to protect engine components	Do not exceed the speed displayed in the driver information system; drive to a qualified workshop without delay if activated due to engine management fault	p. 20
Seat belt monitor lamp	One of the seat belts is not fastened or was unfastened while vehicle was moving	Fasten the seat belt	p. 88
Rear seat belt indicator lamps	Rear seat belt not buckled or seat not occupied	Buckle the seat belt	p. 89
Safety system indicator lamp	Fault in airbags, control units, sensors, wiring, or belt tensioners	Drive to qualified workshop without delay	p. 91
EV mode active indicator	Vehicle is driving purely on electric power	Normal operation for plug-in hybrid vehicles	p. 128
Engine running indicator	Combustion engine is operating	Normal operation	p. 128
Battery Hold mode indicator	Hybrid mode preserving battery charge level	Normal operation	p. 128
Auto Hybrid mode indicator	Electric motor and combustion engine working together efficiently	Normal operation	p. 128
Battery Charge mode indicator	Combustion engine charging the high-voltage battery	Normal operation; higher fuel consumption expected	p. 128
Start/stop system engaged	Engine switched off automatically during stop phase	Normal operation; engine will restart when conditions are met	p. 131
Air suspension fault indicator	Malfunction occurred; vehicle stability and steering may be impaired	Drive to a qualified workshop without delay at reduced speed or safely stop vehicle	p. 140
Active suspension unavailable indicator	High electrical system load or active suspension overload; stability temporarily restricted	Continue driving carefully	p. 140
Active suspension fault indicator	Malfunction occurred; vehicle stability restricted	Drive to a qualified workshop soon	p. 140
Steering fault indicator	Power assistance may have failed or rear wheel steering malfunction	Stop vehicle in safe place immediately; do not drive on; seek professional assistance	p. 141
Electronic steering lock fault indicator	Malfunction in electronic steering lock; ignition cannot be switched on	Secure vehicle to prevent rolling away; do not tow; seek professional assistance	p. 142
Sport differential fault indicator	Malfunction in sport differential	Drive to a qualified workshop soon; have fault rectified	p. 143
ESC/ABS fault indicator	Fault in ABS or EDL system causing ESC malfunction	Drive to a qualified workshop without delay; have fault rectified	p. 144
ESC intervention indicator (flashing)	ESC is actively intervening to stabilize vehicle	Monitor system operation; noises may be heard	p. 144
HV battery: risk of fire!	Severe fault in high-voltage battery with fire risk	Stop vehicle immediately, evacuate to safe area away from buildings and structures, switch on hazard lights, apply parking brake, switch off ignition, leave vehicle key visible, ensure all occupants evacuate to traffic-safe location, contact emergency services	p. 146
Turn signal indicator lamp	Turn signals activated in towing mode	Check trailer lights before journey; note that bulb failure indicator differs in towing mode	p. 166
Please check towing bracket message	Towing bracket malfunction detected	Stop at next opportunity and swivel bracket in and out; if message persists, visit qualified workshop soon	p. 171
Night vision assist detection symbol	System successfully detected pedestrian, cyclist or wild animal within range	Take extra care; pedestrian/cyclist displayed with warning symbol or wild animal with warning symbol; tone sounds	p. 188
Cruise control active indicator	Cruise control system is switched on and actively controlling set speed	System is regulating vehicle speed	p. 189
Speed limiter active indicator	Speed limiter is switched on and actively limiting road speed to threshold set	System is limiting vehicle speed	p. 189
Set speed exceeded indicator (flashing)	Driver is temporarily overriding the speed limit by exceeding set cruising speed	Driver is manually overriding the limit	p. 189
Efficiency assist event symbol	System recommends taking foot off accelerator in response to detected event	Review event symbols displayed to determine type of event being detected	p. 192
Speed/distance regulating function active, no vehicle detected	System is maintaining set speed with no vehicle ahead detected	Monitor system operation	p. 195
Speed/distance regulating function active, vehicle detected	System is regulating speed to maintain distance to vehicle ahead	Monitor system and be ready to take control	p. 195
System active but vehicle not ready to drive off, vehicle detected	Vehicle stationary with vehicle ahead detected; will not automatically restart	Manually restart when conditions permit	p. 195
System active but vehicle not ready to drive off, no vehicle detected	Vehicle stationary with no vehicle ahead; will not automatically restart	Manually restart when conditions permit	p. 195
Vehicle stationary too long	Vehicle has been stopped beyond ready-to-drive period	Reactivate ready-to-drive period via system message	p. 195
Lane guidance active	Lane guidance is assisting with steering inputs	Maintain hands on steering wheel and monitor	p. 195
Take over braking prompt (Distance warning)	System cannot brake sufficiently to maintain safe distance	Apply brake pedal immediately to slow vehicle	p. 198
Take over steering prompt	System limits reached or insufficient steering activity detected	Take immediate steering control; system may deactivate if ignored	p. 198
Lane guidance switched on but not active	Lane guidance unavailable due to system limitations or conditions	Take manual control; check for obstructions or unfavorable conditions	p. 198
Fault indicator (or restricted indicator) for adaptive cruise assist	Adaptive cruise assist functions are unavailable or restricted; sensor vision may be compromised	Clean sensor area, attempt to restart system; if fault persists, visit qualified workshop soon	p. 205
Warning lamp indicating distance below threshold	Vehicle distance has fallen continuously below the set warning threshold in distance warning mode	Take special care; refer to distance warning settings and system limitations on pages 171-174	p. 206
Red line indicator in lane departure warning	Lane departure warning is actively correcting steering to prevent crossing detected lane demarcation	Take immediate control of steering; keep hands on wheel and maintain vehicle in lane centre	p. 207
Indicator lamp for lane departure warning system not ready	Lane departure warning cannot detect necessary lane markings or system limits have been reached	Check for obstructed vision, unclear markings, or adverse conditions; may resume operation when conditions improve	p. 208
Lane departure warning indicator lamp	System not ready to provide lane departure warnings	Check if lane markings cannot be detected, lane width is incorrect, bend is too tight, visibility is poor, hands are off steering wheel, or turn signal is activated	p. 208
Audi pre sense front warning	Danger of frontal collision detected	Respond to acoustic and visual warning; take evasive action or brake hard to avoid collision	p. 210
Audi pre sense indicator lamp	System switched off or fault detected	If switched off, reactivate via Driver assist menu; if fault, clean sensors and restart system or visit qualified workshop	p. 212
Side assist warning signal	Critical object detected in blind spot or adjacent lane	Use caution when changing lanes or turning off; monitor exterior mirror warning lights	p. 213
Exit warning strip and mirror signal	Traffic approaching from behind as vehicle door is opening	Do not exit the vehicle; wait for traffic to pass	p. 215
Emergency call LED - Green	Emergency call function is available	No action required	p. 263
Emergency call LED - Red	A fault has occurred in the emergency call function	Contact a qualified workshop and note driver messages regarding emergency call availability	p. 263
Emergency call LED - Off	Emergency call function is temporarily unavailable, for example if there is no network	Wait for network coverage or contact a qualified workshop if problem persists	p. 263
Emergency call function: fault. Function unavailable	Emergency call system is not operational	Drive to a qualified workshop as soon as possible and have the fault rectified	p. 264
Emergency call function: fault. Function partially available	Emergency call can be made but not all functions may be available, such as voice call to emergency centre	Contact workshop to rectify the fault	p. 264
Fuel indicator lamp	Fuel level low, time to refuel	Add fuel to the vehicle's tank	p. 313
Tank system malfunction indicator	Malfunction in the tank system	Drive to a qualified workshop without delay and have the fault rectified	p. 313
Low AdBlue level warnings	AdBlue tank level below minimum	Refill AdBlue as indicated; if ignored, engine cannot restart after ignition is switched off	p. 317
Emission control system indicator lamp (check engine)	Malfunctions relevant to emissions have occurred; may also light if fuel tank flap not closed properly	Drive slowly to qualified workshop without delay and have fault rectified	p. 321
Pedestrian protection system indicator (active bonnet deployed)	Pedestrian protection system has been deployed in collision with pedestrian	Drive at reduced speed to nearest qualified workshop without delay and have system serviced	p. 322
Pedestrian protection system indicator (system fault)	Fault in pedestrian protection system	Drive to qualified workshop soon and have fault rectified	p. 322
Bonnet not locked warning message	Bonnet lock is not correctly engaged	Stop vehicle without delay and close bonnet	p. 324
Oil pressure warning lamp (with message 'Switch off engine. Oil pressure too low')	Engine oil level too low or oil pressure sensor fault	Check oil level and top up if necessary; if level is OK, seek professional assistance	p. 326
Oil pressure warning (Switch off engine. Oil pressure too low)	Engine oil pressure is too low	Switch off engine and do not drive. Check oil level and add more if needed. If level is OK but warning persists, seek professional assistance.	p. 326
Oil level warning (Please add oil immediately)	Engine oil level is critically low	Switch off engine and do not drive. Check and top up oil immediately.	p. 326
Oil level warning (Please add max. x ltr. oil. You can continue driving)	Engine oil level is low but vehicle can be driven briefly	Add the specified amount of oil soon	p. 326
Oil level warning (Please reduce oil level)	Engine contains too much oil, risking catalytic converter and engine damage	Reduce engine oil level	p. 326
Coolant level warning lamp	Coolant level is too low	Switch off ignition, check coolant level, and add more coolant; do not drive until warning lamp goes out	p. 328
Brake fluid warning lamp (with message 'Brakes: stop vehicle and check brake fluid level')	Brake fluid level is below minimum safe level	Stop vehicle immediately and seek professional assistance; do not drive on	p. 331
Electrical system fault lamps (/ or )	Power supply, battery fault, or electrical system fault	Stop vehicle safely, switch off ignition, and seek professional assistance	p. 332
Loose wheel warning lamp	One or more wheels is no longer properly secured	Slow down immediately, avoid severe braking or steering, stop safely and check all wheel bolts with box spanner, have tightening torques checked with torque wrench	p. 341
Tyre pressure loss indicator lamp (flashing with acoustic signal)	System fault; new tyre pressures have not been stored	Drive to authorised workshop without delay and have fault rectified	p. 343
Tyre pressure loss indicator lamp (single indicator)	Tyre pressure is too low compared with reference value	Adjust pressure of relevant tyre(s) at next opportunity and store new pressures in MMI	p. 345
Flat tyre warning (lamp with message)	Tyre pressure has reached critical value; at least one tyre has severe pressure loss	Avoid unnecessary braking and steering manoeuvres, adapt driving style, stop safely to check tyre(s), take vehicle to qualified workshop for replacement	p. 345
Tyre pressure monitoring system fault lamp	System fault due to sensor issues, radio interference, incompatible sensors, or malfunctioning components	If fault persists and lamp stays on, drive to qualified workshop and have fault rectified	p. 346

Fuses(22)

Fuse	Rating	Circuit	Page
black	1A	Fuse colour coding reference	p. 368
grey	2A	Fuse colour coding reference	p. 368
purple	3A	Fuse colour coding reference	p. 368
pink	4A	Fuse colour coding reference	p. 368
light brown	5A	Fuse colour coding reference	p. 368
brown	7.5A	Fuse colour coding reference	p. 368
red (narrow)	10A	Fuse colour coding reference	p. 368
light blue	15A	Fuse colour coding reference	p. 368
yellow	20A	Fuse colour coding reference	p. 368
white or transparent	25A	Fuse colour coding reference	p. 368
light green	30A	Fuse colour coding reference	p. 368
Footwell Fuse Carrier 1 (brown)	Various	Ignition coils, Power unit start, Control unit for wipers, Headlight electronics (left), Air conditioner blowers, Dash panel, Wipers, Panoramic glass roof	p. 369
Footwell Fuse Carrier 2 (black)	Various	Engine mountings, Door control units, Windscreen/headlight washer system, Headlight electronics (right), Seat heating (front), Sockets, Auxiliary heating, exterior sound generator	p. 369
Footwell Fuse Carrier 3 (red)	Various	Anti-theft alarm system, Drive system control unit, Electronic toll collection system, Horn, Parking brake, Diagnostic interface, Roof electronics, Driver assist systems, Airbag control unit, ESC/ABS, A/C control, Door control units, Air conditioner compressor, Brake system pressure accumulator	p. 369
Footwell Fuse Carrier 4 (black)	Various	Engine components, coolant pump, Lambda probes, Exhaust flaps, injectors, NOx sensor, Brake light sensor, Engine valves, Oil pressure/temperature sensors, 48V starter alternator, Engine cooling, Drive system control unit, Fuel pump	p. 369
Dash Panel Fuse Carrier 1 (black)	Various	Air conditioner, Audi phone box, Head-up display, USB ports, Steering column components, Upper/lower display, Instrument cluster, MMI control, Light switches, Steering wheel heating	p. 370
Luggage Compartment Fuse Carrier 1 (black)	Various	Thermal management, Air suspension, Automatic gearbox control, Seat adjustment/heating (rear), Convenience system, Belt tensioners, Central locking, Boot lid control	p. 370
Luggage Compartment Fuse Carrier 2 (red)	Various	Air conditioner blowers (rear), External aerial, Emission control, Towing bracket components, Four-wheel sport differential	p. 370
Luggage Compartment Fuse Carrier 3 (brown)	Various	Driver assist systems, Audi phone box (rear), Seat adjustment (rear), Side assist, Rear screens, Tyre pressure indicator, Emergency call control, Remote control receiver, Selector lever, TV tuner, Convenience access control, Garage door opener, Cameras, Belt tensioners	p. 371
Luggage Compartment Fuse Carrier 4 (black)	Various	Seat ventilation, Diagnostic interface, Engine sound control, Gearbox heating, Power unit start, Active accelerator, Night vision assist, Adaptive cruise assist, Driver assist/radar/camera systems, External sound generator, USB connection, Headlights	p. 371
Luggage Compartment Fuse Carrier 5 (red)	Various	Active suspension, Emergency cut-out connection, Coolbox, Electric drive system, Brake system, Coolant pump, Auxiliary air conditioning, Air conditioner compressor, Additional battery, High-voltage battery, High-voltage charger, Thermal management	p. 371
Luggage Compartment Fuse Carrier 6 (white)	Various	Heating components, Panorama sunroof (rear), DVD drive, AC power socket, Belt tensioners, Rear Seat Remote, Footrest heating	p. 372

Fluids & capacities(10)

Fluid	Capacity	Specification	Page
Fuel tank	Given in Technical data section	See page 379	p. 314
AdBlue tank	Given in Technical data section	See page 379	p. 317
AdBlue (from canister)	approximately 5 litres	correct type approved for vehicle	p. 319
AdBlue (from bottle)	approximately 1.9 litres	correct type approved for vehicle	p. 319
Engine oil top-up	0.5 litres	VW 504 00, ACEA C3, ACEA C4, API SP or ILSAC GF-6A (petrol); VW 507 00, ACEA C3, ACEA C4 or API CK-4 (diesel)	p. 326
Engine oil (emergency top-up)	maximum 0.5 litres	VW 504 00, ACEA C3, ACEA C4, API SP or ILSAC GF-6A (petrol); VW 507 00, ACEA C3, ACEA C4 or API CK-4 (diesel)	p. 326
Coolant additive	Mixed with distilled water	G12evo TL 774 L; 40-45% (hot regions, min -25°C) or 50-55% (cold regions, max -40°C)	p. 329
Brake fluid	Between MIN and MAX marks	VW 501 14 or FMVSS 116 DOT 4, Class 6 (ISO 4925)	p. 331
Windscreen washer and headlight washer system	See page 379	Clean water with washer fluid; anti-freeze in cold weather	p. 336
Windscreen/headlight washer system	5.8 litres	Standard capacity	p. 381

Service intervals(8)

Item	Interval	Page
Seat belt condition	Check at regular intervals	p. 87
Brake fluid	Must be changed at regular intervals by a qualified workshop	p. 331
12-volt vehicle battery	Should be recharged at least once a month if vehicle is left standing for long periods; check before winter season	p. 332
Oil change (flexible service)	Based on driving profile; initially approximately 500 km after previous service	p. 336
Inspection	Displayed in instrument cluster; check remaining distance via MMI	p. 336
Tyre check for excessive wear	Every 5,000 km to 10,000 km if driven aggressively	p. 339
Tyre pressure check	At least once a month and before long journeys	p. 341
Low-profile tyre inspection for damage	Every 3,000 km	p. 343

Frequently asked questions(12)

How do I make an online roadside assistance call?: Press button 3 on the online roadside assistance call button located in the front headliner. The red LED in the button will light up and the call will be placed. If pressed accidentally, simply press the button again.
What should I do if the emergency call function shows a fault message?: If the indicator lamp lights up with a fault message, you cannot make an emergency call. Drive to a qualified workshop as soon as possible and have the fault rectified. If the function is only partially available, some functions may not work (such as voice calls), but you can still attempt an emergency call.
What personal data does the EU eCall system collect and process?: The EU eCall system may only collect and process the following data: vehicle identification number, vehicle type (passenger car or light goods vehicle), type of vehicle power (petrol/diesel/electric/hydrogen), the last three locations of the vehicle and direction of travel, log file of automatic system activation and its time stamp, version and ID of log file, number of vehicle occupants, and location plausibility.
How do I search for a navigation destination?: You can use internet search by entering search terms and selecting from suggestions provided by the search engine, or use hybrid search to enter destination details in any order (e.g. Forest Road 20 London). You can also search for special destinations or contacts. Alternatively, you can select from last destinations, favourites, contacts, or received destinations from the myAudi app.
Can I add multiple destinations during navigation?: Yes, you can enter stopovers while route guidance is active. The stopovers and tour plan display all destinations in a list. You can add, move, or delete stopovers as needed during your journey.
What warning does the manual give about following navigation recommendations?: The route calculated by the navigation system is a recommendation. Always adhere to locally applicable traffic laws and regulations. If the recommended route contradicts locally applicable traffic laws and regulations, these always take precedence as failure to do so creates a risk of accident.
What engine oil should I use to top up my Audi A8?: Use one of the oils that meet the engine oil standard specified on the sticker located at the front of the engine compartment. For petrol engines: VW 504 00, ACEA C3, ACEA C4, API SP or ILSAC GF-6A. For diesel engines: VW 507 00, ACEA C3, ACEA C4 or API CK-4. If the specified oil is not available, you can add a maximum of 0.5 litres of oil corresponding to these standards once between oil changes in an emergency only. Audi recommends using engine oil from Audi Genuine Parts.
What should I do if the 'Please warm up engine' message appears?: Drive in transmission position S, run the engine at high rpm speeds but avoid using full throttle. You should drive for at least 30 minutes; however the indicator lamp may not go out during this period. Repeat the procedure at your convenience. If the indicator lamp does not disappear after several runs, drive to a qualified workshop and have the fault rectified. When responding to this message, you must adjust your speed to suit the weather, road, terrain and traffic conditions, and never disregard local traffic regulations.
How do I check the engine oil level?: Park the vehicle on a level surface, switch off the warm engine, switch on the ignition again without starting the engine, and wait about 5 minutes for the engine oil to drain back into the sump. On the MMI home screen, select CAR > Settings & service > Oil level and read off the oil level on the display. Top up the engine oil if the bar in the oil level display is near the 'min' mark.
What coolant should I use and in what concentration?: Use a mixture of distilled water and the specified coolant additive G12evo TL 774 L. The concentration depends on expected winter temperatures: for hot regions use 40-45% additive (frost protection minimum -25°C/-13°F), and for cold regions use 50-55% additive (frost protection maximum -40°C/-40°F). Have a qualified workshop check the cooling system before winter to ensure adequate anti-freeze concentration.
What should I know about the brake fluid in my vehicle?: The brake fluid level must be between the MIN and MAX marks on the reservoir located underneath a cover in the engine compartment on the driver's side. The brake fluid must comply with the VW 501 14 standard, or alternatively a high-quality brake fluid complying with FMVSS 116 DOT 4, Class 6 (ISO 4925). If the brake fluid level is under the MIN mark, the effectiveness of the brakes and the safety of the vehicle may be impaired - do not drive on and seek professional assistance. Brake fluid must be changed at regular intervals by a qualified workshop.
Can I replace the 12-volt vehicle battery myself?: No. Any work on the battery must be carried out by a qualified workshop. The 12-volt vehicle battery has been developed for use in its installation location and is equipped with safety features. When replacing it, only maintenance-free 12-volt lead batteries to standards TL 825 06 and VW 7 50 73 (from October 2014 or later) may be used with the same specifications and dimensions as the factory-fitted battery. The vehicle electronics must be calibrated as part of the replacement procedure, and only qualified workshops have the equipment required to perform this correctly.

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