How do I switch on the automatic headlights?

Turn the light switch to the AUTO position. The headlights will switch on and off automatically depending on brightness conditions such as twilight, rain, or tunnels. However, automatic headlights do not relieve you of responsibility to manually switch them on in conditions like fog or when driving in the dark, as stated on page 40.

What should I do if the high beam assistant system shows a fault message?

If the display shows 'Headlight assist: System fault,' drive to an authorized Audi dealer or Audi Service Facility immediately to have the malfunction corrected. You can still switch the high beams on or off manually in the meantime, as indicated on page 41.

How do I operate the high beam assistant feature?

Ensure the light switch is set to AUTO position and the high beam assistant is activated in the Infotainment system. Tap the lever forward to activate it; the indicator light will appear and high beams will switch automatically based on traffic conditions. You can still switch beams manually by tapping forward or pulling back. The system requires the camera view to be unobstructed on page 41.

Can I fold my exterior mirrors by hand if the power folding function breaks?

No. If the mirror housing was moved by force, you must fold the mirrors using the power folding function only. Never fold power folding exterior mirrors by hand, as this would impair the mirror mechanism function, as warned on page 44.

What should I do if the automatic dimming mirror glass breaks?

If the glass breaks, electrolyte fluid can leak out and irritate skin, eyes, and the respiratory system. Flush immediately with plenty of water and seek medical attention if necessary. Additionally, the liquid damages plastic and paint, so clean it quickly with a wet sponge. Consult a physician if there is prolonged exposure, as detailed on pages 44-45.

How often should I replace my windshield wiper blades?

Windshield wiper blades should be replaced once or twice each year for safety reasons, as stated on page 47. Clean the blades when you see streaking using a soft cloth and glass cleaner.

What is the recommended temperature setting for automatic climate control?

The manual recommends pressing the AUTO button and setting the temperature to 72 °F (22 °C).

When should I use recirculation mode?

Switching recirculation mode on when driving through a tunnel or when sitting in traffic is recommended. However, you should not use recirculation mode for an extended period of time since no fresh air is drawn in, as this can cause windows to fog up and increase the risk of an accident.

Why is there water under my vehicle after using air conditioning?

Condensation from the cooling system can drip and form a puddle of water under the vehicle. This is normal and does not mean there is a leak.

What should I do before using the windshield washer in freezing temperatures?

When the temperature is below freezing, only use the windshield washer system after the windshield has been warmed by the climate control system, as the washer fluid could freeze on the windshield and impair visibility.

How long does the rear window defogger stay on?

The rear window heater only operates when the engine is running and switches off automatically after a few minutes, depending on the outside temperature. To prevent automatic switching off, press and hold the REAR button for more than 2 seconds.

Who should not use the seat heating function?

Individuals with reduced sensitivity to pain or temperature could develop burns when using the seat heating function. To reduce the risk of injury, these individuals should not use seat heating.

Model years 2014–2018EU marketManual language: en

Audi A6 C7.5 (2014–2018) owner's manual guide

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2014 2015 201620172018

This guide summarizes the official owner's manual for the Audi A6 C7.5, model years 2014–2018. 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 A6 C7.5 (2014–2018) owner's manual, with section and page references. Ask in any language.

What the manual covers(159)

About this Owner's Manualp. 7
Cockpitp. 8
Cockpit overviewp. 8
Controls at a glancep. 8
Instruments and indicator lightsp. 11
Instrumentsp. 11
Indicator lightsp. 12
Driver information systemp. 21
Overviewp. 21
Operationp. 22
On-board computerp. 22
Efficiency programp. 23
Odometerp. 24
Time/date displayp. 24
Head-up displayp. 24
Starting and drivingp. 26
Opening and closingp. 26
Central lockingp. 26
Luggage compartment lidp. 32
Child safety lockp. 35
Power windowsp. 36
Sunroofp. 37
Valet parking functionp. 38
Garage door opener (Homelink)p. 38
Lights and Visionp. 40
Exterior lightingp. 40
Interior lightingp. 43
Visionp. 44
Windshield wipersp. 46
Seats and storagep. 49
General informationp. 49
Front seatsp. 49
Head restraintsp. 50
Memory functionp. 51
Ashtrayp. 53
Cigarette lighterp. 53
12 Volt socketsp. 54
Storagep. 54
Luggage compartmentp. 56
Warm and coldp. 60
Climate control systemp. 60
Steering wheel heatingp. 65
Drivingp. 66
General informationp. 66
Steeringp. 68
Starting and stopping the enginep. 70
Start/Stop systemp. 72
Electromechanical parking brakep. 74
Starting to drivep. 76
Automatic transmissionp. 76
Trailer towingp. 83
Driving with a trailerp. 83
Driver assistancep. 86
Assistance systemsp. 86
Speed warning systemp. 86
Cruise control systemp. 86
Audi adaptive cruise controlp. 88
Audi pre sensep. 96
Audi active lane assistp. 97
Audi side assistp. 100
Night vision assist with pedestrian and wild animal detectionp. 103
Audi drive select (drive settings)p. 106
Parking systemsp. 109
General informationp. 109
Parking system plusp. 110
Rearview camerap. 111
Peripheral camerasp. 114
Adjusting the display and the warning tonesp. 119
Error messagesp. 119
Trailer hitchp. 119
Intelligent Technologyp. 121
Electronic stabilization control (ESC)p. 121
Brakesp. 122
Electromechanical steering, dynamic steeringp. 124
All wheel drive (quattro)p. 125
Energy managementp. 125
Notice about data recorded by the Event Data Recorder and vehicle control modulesp. 126
Safetyp. 127
Driving safetyp. 127
Basicsp. 127
Correct passenger seating positionsp. 128
Driver's and front passenger's footwellp. 131
Pedal areap. 132
Storing cargo correctlyp. 132
Reporting Safety Defectsp. 134
Safety beltsp. 136
General informationp. 136
Why use safety belts?p. 137
Safety beltsp. 139
Belt tensionersp. 142
Airbag systemp. 144
Important informationp. 144
Front airbagsp. 148
Monitoring the Advanced Airbag Systemp. 156
Knee airbagsp. 160
Side airbagsp. 162
Side curtain airbagsp. 165
Child safetyp. 168
Important informationp. 168
Child safety seatsp. 174
Securing child safety seatsp. 179
LATCH system (lower anchorages and tethers for children)p. 182
Additional informationp. 186
Maintenance and Carep. 187
Checking and Fillingp. 187
Fuelp. 187
Refuelingp. 188
Emissions control systemp. 190
On Board Diagnostic System (OBD)p. 191
Engine compartmentp. 191
Engine oilp. 194
Cooling systemp. 197
Brake fluidp. 199
Batteryp. 199
Windshield washer systemp. 201
Service interval displayp. 201
Wheelsp. 203
Wheels and Tiresp. 203
Tire pressure monitoring systemp. 220
Care and cleaningp. 223
General informationp. 223
Car washesp. 223
Cleaning and care informationp. 224
Placing your vehicle out of servicep. 227
Do It Yourselfp. 228
Emergency assistancep. 228
General informationp. 228
Equipmentp. 228
Replacing wheelsp. 229
Spare tirep. 234
Fusesp. 236
Replacing fusesp. 236
Driver side cockpit fuse assignmentp. 237
Front passenger side cockpit fuse assignmentp. 238
Luggage compartment fuse assignmentp. 238
Bulbsp. 240
Replacing light bulbsp. 240
Emergency situationsp. 241
Generalp. 241
Starting by pushing or towingp. 241
Starting with jumper cablesp. 241
Use of jumper cablesp. 242
Towing with a tow truckp. 243
Raising the vehiclep. 245
Accessories and Technical Datap. 247
Technical datap. 247
Vehicle specificationsp. 247
Notes about technical datap. 247
Dimensionsp. 247
Capacitiesp. 247
Weightsp. 248
Consumer Informationp. 249
Warranty coveragesp. 249
Operating your vehicle outside the U.S.A. or Canadap. 249
Audi Service Repair Manuals and Literaturep. 249
Maintenancep. 249
Accessories and technical changesp. 251
Declaration of compliance for telecommunications equipment and electronic systemsp. 252
Indexp. 253

Dashboard warning lights(53)

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
Fuel level indicator light (red LED)	Fuel level below 2.6 gallons (10 liters)	Refuel soon. If LED blinks red, fuel level is very low. Never drive until tank is completely empty.	p. 12
Brake system indicator light (BRAKE)	Malfunction in the brake system or low brake fluid level	Stop the vehicle and check brake fluid level. See an authorized Audi dealer or authorized Audi Service Facility if necessary.	p. 14
Electromechanical parking brake indicator light (PARK)	Parking brake was set or parking brake system fault	If blinking with 'Vehicle parked too steep' message, do not park on steep inclines. If system fault message appears, see an authorized dealer immediately.	p. 15
Cooling system indicator light	Coolant level too low or coolant temperature too high	Turn off engine and check coolant level. Do not continue driving if overheating message appears. See authorized dealer if necessary.	p. 15
Engine oil level (MIN) indicator light	Engine oil level is low or sensor is defective	Add engine oil immediately or see authorized dealer if sensor is defective.	p. 15
Steering lock indicator light	Electronic steering lock malfunction	Do not tow vehicle. See authorized dealer immediately.	p. 15
Engine oil pressure indicator light	Engine oil pressure malfunction	Stop the engine and do not continue driving. Check engine oil level. If correct, see authorized Audi dealer immediately.	p. 16
Alternator/vehicle battery indicator light	Alternator malfunction or vehicle battery not being charged	Drive to authorized Audi dealer immediately. Turn off unnecessary electrical equipment.	p. 16
Engine stop while driving indicator light	Engine malfunction or fuel supply system failure	More force needed to steer and brake. Bring vehicle to stop off moving traffic. See authorized dealer.	p. 16
Front safety belt indicator light	Driver's or front passenger's safety belt is not fastened	Fasten safety belts. Warning tone will sound above certain speed.	p. 16
Engine start system indicator light	Engine starting system malfunction	Do not switch off ignition. Drive to authorized dealer immediately.	p. 17
Air suspension indicator light	Air suspension system malfunction or service mode active	Drive to authorized dealer immediately at maximum speed of 35 mph (60 km/h) or move carefully with restrictions.	p. 17
Electronic Stabilization Control (ESC) indicator light	ESC or ABS malfunction	Do not continue driving if both ESC and brake indicator lights are on. See authorized dealer immediately.	p. 17
Engine speed limitation indicator light	Engine speed automatically limited due to critical temperature	Do not exceed displayed RPM speed. Drive to authorized dealer if also accompanied by engine control malfunction light.	p. 17
Brake pads indicator light	Brake pads are worn	Drive to authorized Audi dealer or Service Facility immediately to have brake pads checked.	p. 18
Engine control (EPC) indicator light	Engine control malfunction	Drive slowly to authorized Audi dealer to have engine checked.	p. 18
Safety systems indicator light	Malfunction in airbag, belt tensioner, or other safety system	Drive to authorized Audi dealer immediately to have malfunction corrected.	p. 18
Washer fluid level indicator light	Washer fluid reservoir is low	Fill the washer fluid for windshield washer system and headlight washer system when ignition is off.	p. 19
Windshield wipers indicator light	Windshield wiper malfunction	Drive to authorized Audi dealer or Service Facility immediately to have malfunction corrected.	p. 19
Bulb failure indicator light	A light bulb has failed	Drive to authorized Audi dealer or Service Facility immediately to have malfunction corrected.	p. 19
Headlight range control indicator light	Headlight range control system malfunction causing possible glare	Drive to authorized Audi dealer or Service Facility immediately to have malfunction corrected.	p. 19
Light/rain sensor indicator light	Light/rain sensor malfunction	Low beams remain on for safety. Drive to authorized dealer to have malfunction corrected.	p. 19
Tank system indicator light	Low fuel (about 2.6 gallons/10 liters remaining) or fuel tank system malfunction	Refuel soon. If malfunction message appears, see authorized dealer immediately.	p. 19
Engine warm-up request indicator light	Fuel has entered engine oil from low temperatures or frequent short drives	Drive until engine is warm to allow fuel to evaporate. Avoid high engine speeds, full acceleration, and heavy loads.	p. 19
Turn signals indicator light	Turn signal activated or turn signal bulb failed	If blinking twice as fast as usual, a bulb has failed. See authorized dealer immediately.	p. 20
Sport differential indicator light	Sport differential system fault or overheating	If fault: see authorized dealer immediately. If overheating: drive less sportily until temperature returns to normal.	p. 20
Speed warning indicator light (USA) / I (Canada)	Vehicle speed exceeds the stored maximum speed threshold	Reduce speed below the stored maximum speed threshold	p. 86
Adaptive cruise control indicator light (green)	Adaptive cruise control is switched on with no objects detected ahead; stored speed is maintained	Continue monitoring traffic conditions	p. 90
Adaptive cruise control indicator light (white vehicle symbol)	An object ahead was detected; system regulates speed and distance automatically	Monitor system operation and traffic conditions	p. 90
Adaptive cruise control indicator light (stopped vehicle symbol)	Adaptive cruise control is on, an object ahead was detected, and vehicle remains stopped and will not start automatically	Manually resume driving by pressing accelerator or pulling lever	p. 90
Adaptive cruise control indicator light (red vehicle symbol)	Automatic braking is not sufficient to maintain safe distance to object ahead	Driver must intervene and press brake pedal	p. 91
Braking guard distance warning indicator light	Vehicle is following too closely to object ahead; collision cannot be avoided if object brakes strongly	Increase following distance	p. 91
Braking guard approach warning indicator light	Object ahead is traveling slower or braking strongly; collision may only be avoided by swerving or strong braking	Brake strongly or swerve to avoid collision	p. 91
Distance/approach warning indicator (•)	Braking guard detected dangerous proximity to vehicle ahead or approaching object	Pay close attention to traffic; press brake pedal to slow vehicle; check mirrors and surroundings	p. 93
ACC/Braking guard unavailable	Sensors moved, faulty, or system malfunction preventing proper object detection	Drive to authorized Audi dealer or service facility immediately to have malfunction corrected	p. 95
Active lane assist ready (•)	System is activated and ready to provide lane departure warnings	Maintain hands on steering wheel; system will provide corrective steering if lane departure is detected	p. 97
Active lane assist not ready (•)	System is switched on but cannot detect lane marker lines or conditions prevent operation	Check that lane markers are visible; ensure vehicle speed exceeds approximately 40 mph; keep hands on steering wheel	p. 98
Side assist display (dim)	Critical vehicles detected in blind spot or approaching, no turn signal activated	Remain aware of detected vehicles; check mirrors if planning a lane change	p. 100
ESC indicator light (blinking)	Electronic stabilization control is actively regulating the vehicle	Adjust your speed to match road and traffic conditions	p. 121
Stabilization control (ESC): Sport mode warning message	ESC and ASR stabilization functions are limited in sport mode	Drive cautiously as wheels could spin and vehicle could swerve on slippery surfaces	p. 122
Do not drive vehicle: Steering defective	Power steering has failed	Stop the vehicle in a safe location immediately and contact an authorized Audi dealer or service facility	p. 124
Steering: System fault	Steering wheel may be more difficult to move or more sensitive than usual	Drive slowly to an authorized Audi dealer or service facility for correction	p. 124
Dynamic steering: Initializing	Dynamic steering system is being initialized after engine start	Allow initialization to complete; re-initialization may be needed if steering wheel was moved hard left and right while stationary	p. 124
Safety belt warning light	Reminder to fasten safety belts	Fasten your safety belt and ensure all passengers properly wear their safety belts	p. 136
PASSENGER AIRBAG OFF	Front passenger airbag has been turned off by the electronic control unit	Verify the light is on when required; if child restraint is installed and light does not come on, immediately move child to rear seat and have system inspected by Audi dealer	p. 150
Airbag indicator light (USA models) or airbag indicator light (Canada models)	Malfunction detected in Advanced Airbag System components on front passenger seat	Have airbag system inspected by qualified workshop personnel	p. 151
Airbag monitoring indicator light	Advanced Airbag System malfunction or system check in progress	If light does not come on at ignition, does not go out after a few seconds, or comes on while driving, have system inspected immediately by authorized Audi dealer	p. 156
PASSENGER AIR BAG OFF light	Front passenger frontal airbag has been turned off by electronic control unit or bulb has burned out	Check airbag on/off status for occupant age, size and position; if bulb is burned out or light does not function properly, have system inspected immediately by authorized Audi dealer	p. 156
Airbag indicator light	Airbag system malfunction or diagnostic issue	Have the system inspected immediately by an authorized Audi dealer; the airbag may inflate when not supposed to or fail to inflate when it should	p. 163
Emissions control indicator light (check engine)	Malfunction causing poor emissions quality that could damage catalytic converter	Drive slowly to authorized Audi dealer or service facility to have malfunction corrected; also check if fuel filler cap is closed correctly	p. 191
Coolant level indicator	Coolant level is low	Check coolant level manually; refer to page 13 for automatic monitoring	p. 197
Tire pressure indicator (low pressure in at least one tire)	Loss of pressure in at least one tire or tire pressure too low	Check and inflate tires to proper pressure; reduce speed immediately and avoid hard steering or braking maneuvers; stop as soon as possible	p. 221
TPMS malfunction indicator (flashing then continuous)	Tire Pressure Monitoring System malfunction; system may not detect low tire pressure as intended	Try to store correct tire pressures; if indicator does not turn off or turns on again after short time, drive to authorized Audi dealer or service facility immediately	p. 221

Fuses(20)

Fuse	Rating	Circuit	Page
Black 1A	1	Various circuits (see fuse panel assignment)	p. 236
Purple 3A	3	Various circuits (see fuse panel assignment)	p. 236
Light brown 5A	5	Various circuits (see fuse panel assignment)	p. 236
Brown 7.5A	7.5	Various circuits (see fuse panel assignment)	p. 236
Red 10A	10	Various circuits (see fuse panel assignment)	p. 236
Blue 15A	15	Various circuits (see fuse panel assignment)	p. 236
Yellow 20A	20	Various circuits (see fuse panel assignment)	p. 236
White or transparent 25A	25	Various circuits (see fuse panel assignment)	p. 236
Green 30A	30	Various circuits (see fuse panel assignment)	p. 236
Orange 40A	40	Various circuits (see fuse panel assignment)	p. 236
Black	1	Fuse color identification	p. 236
Purple	3	Fuse color identification	p. 236
Light brown	5	Fuse color identification	p. 236
Brown	7.5	Fuse color identification	p. 236
Red	10	Fuse color identification	p. 236
Blue	15	Fuse color identification	p. 236
Yellow	20	Fuse color identification	p. 236
White or transparent	25	Fuse color identification	p. 236
Green	30	Fuse color identification	p. 236
Orange	40	Fuse color identification	p. 236

Fluids & capacities(9)

Fluid	Capacity	Specification	Page
Engine oil (single addition)	0.5 quart (0.5 liter)	VW standard on engine oil label	p. 194
Engine oil (emergency maximum)	1 quart (1 liter)	ACEAC3 or API SN	p. 194
Coolant additive - Warm regions	40-45% mixture	Gl2evo TL 774 L, Gl2++ TL 774 G, or Gl3 TL 774 J	p. 197
Coolant additive - Cold regions	50-55% mixture	Gl2evo TL 774 L, Gl2++ TL 774 G, or Gl3 TL 774 J	p. 197
Windshield washer reservoir	See page 245	Clean water with low calcium content, window cleaner, anti-freezing agent in cold conditions	p. 201
Fuel tank	19.8 gal (75.0 L)	Approximate capacity	p. 247
Windshield washer system	3.7 qt (3.5 L)	Approximate capacity	p. 247
Windshield and headlight washer system	5.2 qt (4.9 L)	Approximate capacity	p. 247
Washer fluid reservoir	Not specified in excerpt	Washer fluid reservoir capacity	p. 254

Service intervals(14)

Item	Interval	Page
Windshield wiper blades	Once or twice each year	p. 47
Engine oil level check	Each time you refuel and before long drives	p. 195
Engine oil level check	Regularly due to normal consumption of up to 0.5 quart/600 miles (0.5 liter/1,000 km)	p. 195
Oil change	According to intervals specified in Warranty & Maintenance booklet; more frequently if driving short distances, dusty areas, stop-and-go traffic, or below-freezing temperatures	p. 196
Coolant additive percentage check	Before the start of winter	p. 198
Oil change	As indicated in service interval display	p. 199
Brake fluid change	Regularly by authorized Audi dealer	p. 199
Vehicle battery charge	Every month during long periods of non-use	p. 200
Vehicle battery check	Before the cold time of year	p. 200
Inspection or oil change reminder	After certain distance driven, message appears each ignition on/off cycle	p. 201
Inspection or oil change due	When vehicle reaches scheduled interval, message appears after switching ignition on/off	p. 201
Check wheels for damage (low-profile tires)	Every 2,000 mi (3,000 km)	p. 219
Check tire pressure	Monthly when cold	p. 220
Windshield washer system	Maintenance required	p. 264

Frequently asked questions(12)

How do I switch on the automatic headlights?: Turn the light switch to the AUTO position. The headlights will switch on and off automatically depending on brightness conditions such as twilight, rain, or tunnels. However, automatic headlights do not relieve you of responsibility to manually switch them on in conditions like fog or when driving in the dark, as stated on page 40.
What should I do if the high beam assistant system shows a fault message?: If the display shows 'Headlight assist: System fault,' drive to an authorized Audi dealer or Audi Service Facility immediately to have the malfunction corrected. You can still switch the high beams on or off manually in the meantime, as indicated on page 41.
How do I operate the high beam assistant feature?: Ensure the light switch is set to AUTO position and the high beam assistant is activated in the Infotainment system. Tap the lever forward to activate it; the indicator light will appear and high beams will switch automatically based on traffic conditions. You can still switch beams manually by tapping forward or pulling back. The system requires the camera view to be unobstructed on page 41.
Can I fold my exterior mirrors by hand if the power folding function breaks?: No. If the mirror housing was moved by force, you must fold the mirrors using the power folding function only. Never fold power folding exterior mirrors by hand, as this would impair the mirror mechanism function, as warned on page 44.
What should I do if the automatic dimming mirror glass breaks?: If the glass breaks, electrolyte fluid can leak out and irritate skin, eyes, and the respiratory system. Flush immediately with plenty of water and seek medical attention if necessary. Additionally, the liquid damages plastic and paint, so clean it quickly with a wet sponge. Consult a physician if there is prolonged exposure, as detailed on pages 44-45.
How often should I replace my windshield wiper blades?: Windshield wiper blades should be replaced once or twice each year for safety reasons, as stated on page 47. Clean the blades when you see streaking using a soft cloth and glass cleaner.
What is the recommended temperature setting for automatic climate control?: The manual recommends pressing the AUTO button and setting the temperature to 72 °F (22 °C).
When should I use recirculation mode?: Switching recirculation mode on when driving through a tunnel or when sitting in traffic is recommended. However, you should not use recirculation mode for an extended period of time since no fresh air is drawn in, as this can cause windows to fog up and increase the risk of an accident.
Why is there water under my vehicle after using air conditioning?: Condensation from the cooling system can drip and form a puddle of water under the vehicle. This is normal and does not mean there is a leak.
What should I do before using the windshield washer in freezing temperatures?: When the temperature is below freezing, only use the windshield washer system after the windshield has been warmed by the climate control system, as the washer fluid could freeze on the windshield and impair visibility.
How long does the rear window defogger stay on?: The rear window heater only operates when the engine is running and switches off automatically after a few minutes, depending on the outside temperature. To prevent automatic switching off, press and hold the REAR button for more than 2 seconds.
Who should not use the seat heating function?: Individuals with reduced sensitivity to pain or temperature could develop burns when using the seat heating function. To reduce the risk of injury, these individuals should not use seat heating.

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