2010 AUDI Q7 check engine light

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<£> For the sake of the environment
Dra ined coolant sho uld not be reused. A lways dispose of used coolan t
w hile observing a ll enviro nmental regulations .•
Radiator fan
T he radia tor fa n switc hes on a utoma tically by itself
The radiator fan is driven by the engine via the V-belt. The v iscous
cl utch reg ulates the spee d of t he fan accord ing to t he tem pera ture o f
the coolant.
An aux ili ar y e lec tric r adi ator fan* sw itches on and o ff depend ing o n
coo la nt temperat ure and other vehicle operating conditions.
After you switch the engine off, the auxiliary fan can continue r unning
for up to 10 minutes -eve n w it h t he igni tion o ff.
It can even swit ch on
again later by itse lf => & , if
• t he tem pera ture of the e ngi ne coola nt rises due to the hea t build­
up from the eng ine in the engine compa rtment, o r
• th e engine compar tmen t heats up because the ve hicl e is parked in
intense s unlight.
& WARNING
• To reduce the risk of personal injury never touch the radiator
fan .
• The auxiliary electric fan is temperature cont rolled and can
switch on suddenly even when the engine i s not running.
• The auxiliary radiator fan switche s on automatically when the
engine coolant reaches a certain temperatu re and will continue to
run until the coolant temperature drops. •
~ehicle OP-eration
Brake fluid
Checking brake fluid level
The brake flu id l eve l can be checke d with a quick gl ance .
Fig . 236 Engine
compa rtment : Brake
fluid rese rvoir
Before you check a nyt hin g i n th e eng ine compa rtment ,
always read and heed all WARNINGS~ & in " Working in
the e ng ine co mpartmen t" on
page 297.
- Read the brake fluid level f rom t he bra ke flu id reservoir
~ fig. 2 36 . The bra ke fluid leve l must be between the
" MIN " and "MAX" markings.
Th e brake fl uid rese rvoir is located at the rear partition of t he engine
compartment on the left side=>
page 298.
The fluid level may drop slightly after some time due to the auto­
m atic adjus tmen t of th e br ake pads. This is no t ca use for alarm .
If the brake fluid level falls
considerably below the "MIN" mark, t he
brake warn ing/i nd icator lig ht ( U.S. models :
BRAKE, Canadian mode ls:
ill ) will come on=> page 20 and=> page 29 . Do not continue to
operate the vehicle . The complete brake system s hould be thorough ly
che cked by an au thori zed Aud i dea le r o r q ua lified wor kshop a nd the
cause corrected.
If t h e brake fl uid leve l is too low, the brake .,,_
Vehicle care Do-it-yourselt service iTechnical data

-Checking and filling .,,,, _ _..::::.__-=-----------------
& WARNING (continued)
• To reduce the danger of explosion, never connect or disconnect
charger cables while the charger is operating.
• Fast charging a battery is dangerous and should only be
attempted by a competent technician with the proper equipment.
• Battery acid that may spill during charging should be washed
off with a solution of warm water and baking soda to neutralize
the acid.
0 Note
Never use a fast charger as a booster to start the engine. This will seri­
ously damage sens it ive electronic components, such as control units,
relays, radio, etc ., as well as the battery charger.•
Battery replacement
The new battery must have the same specifications and
dimensions as the original equipment battery.
Intelligent energy management in your veh icle is responsible for
distributing the electrical energy throughout your vehicle
~ page 259. T he intelligent energy management system will keep
the engine battery charged better then vehicles without this system .
To make sure the additional electrical energy is available once again
after you have changed the battery, we recommend that you install
batteries of the same type and manufacture only (the same as those
installed at the time your vehicle was delivered). Specifications are
listed on the battery housing. Your authorized Audi dealer will then
code the battery management control unit.
If it is not poss ible to use a battery of this type, the new battery must
have the same capacity, vo ltage (12 volts), amperage, construction
and plug sea ling .
When installing the battery, make sure the ignition and all electrica l
consumers are turned off.
0 Note
Make sure the vent ilation hose on the side of the battery is
connected, otherwise fumes or battery acid can leak out.
Because of the problem of proper disposal of a battery, we recom­
mend your authorized Audi dealer change the battery for you.
Batteries contain sulfuric acid and lead and must always be disposed
of properly in compliance with all environmental regulat ions.
Disposing of vehicle batteries improperly is very dangerous to the
environment. •
Windshield/headlight washer
container
Fig. 238 Engine
com partm ent : Wind·
shield and headlight"
wash er fluid container
The washer fluid container is marked with the symbol~ on
its cap.
- Before you check anything in the engine compartment,
always read and heed all WARNINGS~ & in "Working
in the engine compartment" on page
297. ..,_

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& WARNING (continued)
• Before you check anything in the engine compartment, always
read and heed all WARNINGS~
page 286, "Engine compart­
ment".
0 Note
• Applying a higher voltage booster battery will cause expensive
damage to sensitive electronic components, such as control units,
relays, radio, etc.
• There must be no electrical contact between the vehicles as other­
wise current could already start to flow as soon as the positive(+)
terminals are connected.
[I] Tips
• The discharged battery must be properly connected to the
vehicle's electrical system . When jump starting or charging the
battery, never connect the negative ground cable to the battery nega­
tive post because the battery manager system must be able to detect
the battery's state of charge. Always connect the negative ground
cable to the negative ground post of the battery manager control
unit. •
Vehicle OP-eration
Use of jumper cables
Make sure to connect the jumper cable clamps in exactly
the order described below!
Fig. 262 Engine
compartment: Connec­
tors for jumper cables and charger
Fig. 263 Jump
starting with the
battery of another
vehicle: A -discharged
vehicle battery, B -
booster battery
The procedure described below for connecting jumper cables
is intended to provide a jump start for your vehicle.
Vehicle with discharged battery:
- Turn off lights and accessories, move lever of automatic
transmission to
N (Neutral) or P (Park) and set parking
brake.
~
Vehicle care Do-it-yourself service iTechnical data

Alphabetical index -________________ fWI
Alternator Auto-Check Control ..... .. .. .... ...... 27 Replacing the battery .. .... .. .. .. . 312
Malfunction ............. ........ . 29 Automatic belt retractor ............. 203 State of charge
.................. 259
Ambience lighting Lighting profiles ................. . 71
Anti -freeze
See Engine coolant system ......... 304
Anti-glare inside day-night mirror ... 77, 78
Anti -lock brake system
How the ABS system works ......... 256
Warning/indicator lights ... .. .... .. 19
Anti-S lip Regulation System (ASR)
How the system works ... .... .. .. . 254
Anti-theft systems
Anti-theft alarm system ........ .. .. 55
Electronic immobilizer ............. 43
Approach/departure angle ............ 266
Ashtray . ............. .. .. .. .. .... . 103
ASR How the Anti-Slip Regulation System works . ..... ... ... .. .. ......... 254
Asterisk What does it mean when something is
marked with an asterisk? ........... 6
Audi braking guard .................. 149
Error messages ............... ... 151
Settings ................ ..... ... 15 1
Status messages ................. 151
Switching on and off .............. 151
Audi Service Repair Manuals and Literature
366
AU TO mode
AC climate contro ls ...... .... .. .. . 112
Auto Safety Hotline .... ... ... ....... 197
Controls and equip­
ment Safety first
Automatic car wash
See Washing
.................... 275
Automatic mode Four-zone automatic comfort air
conditioning ........... ...... .. 117
Automatic Sh ift Lock (ASL) ............ 163
Automatic transmission
6-speed automatic transmiss ion .. .. 161
Automatic Shift Lock (ASL) ......... 163
Driving ......................... 161
Dynamic shift program ............ 164
Emergency release for selector lever . 166
Fail-safe mode ................ ... 166
Ignition key safety lock .... ... .. .. . 125
Kick-down . ...... .. .. .. .. ....... 164
Manual shift program .. .. .. .. .. .. . 165
Selector lever ............ ........ 162
Shift buttons .................... 166
Steering wheel with tiptronic ® .... .. 166
Average speed ....................... 3 7
Avoid damaging the vehicle ........... 263
B
Bass box ... .. .. ................. .. 337
Battery . .. .. .. .. .. ........ ......... 308
Battery location .. ... ............. 309
Charging ................ .. ... ... 311
Important warnings when working on the battery . .. .... ....... ..... .. ... 309
Jump start ing ................. ... 352
Low . .. .... .. .. .... ... ...... .... 259 Voltage
............. .... ... ...... 33
Winter operation ............... .. 308
Work ing on the battery ............ 309
Before driving .. .... .. ...... ....... . 189
Blended gasoline . .. .. ...... ....... . 287
Body cavity sealing .................. 280
Booster seats .................... .. 239
Brake ass istant . .. .... .............. 257
Brake booster ..................... . 256
Brake fluid Changing the brake fluid ........... 308
Checking the brake fluid level ....... 307
Reservoir ...................... . 307
What is the correct brake fluid level? . 307
What should I do if the brake fl uid wa rning
light comes on? ... .. .. .. ........ 307
Brake light
Defective .... .................... 24
Brake system ..... .......... ...... .. 307
Anti -lock brake system ............. 19
Brake fluid .. ...... ...... ....... . 307
Brake fluid specificat ions for refill and
replacement ................. .. 308
Brake pads .. .. ................ .. 262
General information ............ .. 255
How does moisture or road salt affect the
brakes? . ...................... 255
Malfunction ........ ...... ...... .. 29
Parking b rake .................... 129
Warning/indicator lights ..... .. .. .. 20
Worn brake pads symbol ........... 34
Vehicle operation Vehicle care Do-it-yourself service Technical data

___ A_ l_. p_ h _ a_b_ e_ t_ic _a_ l_ in_ d_e _ x ____________________________________________ _
Braking guard
See Audi braking guard ............ 149
Break-in period .... .. .. .. .. ...... ... 261
Brake pads ..... .. .... .. ..... .... 262
T ires .. .... .. ................... 261
Brea kove r angle . .. .. ...... ....... .. 266
Bulbs ...................... .... ... 350
B umper cover
Caution when parking near a parking barri-
er or curb ............. .. .... .. 130
C
Ca lifo rnia Proposition 65 Warn ing ... .. 298
Batte ry spe cific . .... ........... .. 310
Capacities ................. ...... .. 363
Car -Sys tems
Ambience lighting ... .. .. ...... .. .. 71
Lighting profiles . ... .. .. ... .... ... 71
Car care .. .. .. .. .. .. ............. .. 2 7 4
Interior ................ .. .... .. 281
Plastic and vi ny l .. .. .. .. ..... .... 278
Weatherstrips . ... .. ...... ... . .. . 279
Care of exterior .. ......... ... ....... 274
Cargo area
See Loading the luggage compartment ..
195
Cargo floor ................ .. .... .. . 97
Cargo net . ... .. ...... .. . ... ... .. .. . 96
Catalyt ic converter ........ ....... ... 262
Center armrest Cup holder ... .... .... .. .......... 92
Storage compartment . .. .......... 92 Center console
in rear .... ..... .... ... 93
Centra l loc king
Emergency locking ... ... . ... .. .. .. 48
Panoramic sliding sunroof . ... .... .. 61
Central loc king system
Filler flap .......... .... .. .. .. .. . 29 4
Cert ificat ion ........... ... ... .... .. 369
Changing a flat tire ..... ...... .. ... . 339
Cha ng ing a wheel ............. ... .. . 339
Changing engine oil . ................ 303
Chassis Under coati ng ....... ... . ... .. .. . 280
See also Adaptive Air S uspension . .. 176
CHECK button .. .................. ... 13
Checking Engine coo lant level ....... .. .. .. . 305
C hecking tire press ure . ..... .. .. .... . 320
Chi ld restra int system anchors ..... .. . 244
Child restraints Danger of us ing child restraints in the front
seat .. .... .. ........... .. .. .. . 21 1
Whe re can I get add itiona l information
about child restra ints and their use? .. .
2 51
Ch ild safety ... ... ... ... ... .. .. .. .. . 231
Convert ible lock ing retractor .. ... .. 24 1
Guidance fixtures fo r lower anchorages
246
Important safety instructions for using
child s afety seats .... .... .. .. .. . 234
Important things to know whe n dr iving
with children ............... ... . 231 Installing a child restrai
nt us ing the LA TCH
syste m ....... .... .. .. .. .. .. .. 248
M ounting and re leasing the anchorage
hook ............ .. . ... ... .. .. 248
T ethe r anchors ........... ... .... 249
T ethe r str aps . ....... ...... .. .. .. 249
Chi ld safety lock
rear doo rs (power) .. .............. 52
Chi ld safety seats . ....... ... .. .... .. 236
Booster seats . ... .. .. ... .. .. .. .. 239
Convert ible chi ld seats ... ......... 237
Convert ible lock ing retractor ....... 241
Danger of us ing child restraints in the front
sea t ... ........... ...... ... ... 211
How do I properly ins tall a child s afe ty se at
in my vehicle? .... ... .... ... .. .. 234
Infant seats ...... ............... 236
Insta lling ............ ... .. .. .... 241
LA TC H system . . . . . . . . . . . . . . . . . . . 248
Safety inst ruct ions .. ....... .... .. 23 4
Child seats Lower anchorages . .. ............. 245
Clean diesel
See Ad B lue . ... .. .. ..... ..... . .. 292
Cleaning Alcanta ra (synthe tic suede) .. .. .. .. 285
E ngine comp artmen t ....... .. . ... 286
Exha ust ta il pipes ... .. .. .. ...... . 281
Fabrics and fab ric coverings . ... .... 28 1
Instrument pane l ... .. .. ... ..... . 282
Interior . ........... .. .. .. .. . ... 281
Leather ........ .. .. .. .. .. .. .. .. 284
M MI control console . ............. 281
MMI display .. .. ... ....... ... . ... 281

-Alphabetical inde x _ ___,_ ______ .::..:....=.:..:..__ __________________________ _
Dimensions ... ............ ....... .. 362
Dipstick
Reading the dipstick properly ......
301
Distance control system
See Adaptive Cruise Control ...... .. 134
Doors
Power child safety lock .............
52
Driver information system ......... .... 22
Digital speedometer ............... 24
Driver information messages ........ 27
Open door or rear lid warning ....... 24
Outside tempera ture display ..... ... 23
Sound system display .. .. ..... ..... 23
Drive r seat
See Seating position .............. 190
D. , river s seat . . . . . . . . . . . . . . . . . . . . . . . . 84
Driver's seat memory .............. ... 87
Activating remote control key .... ...
88
Recalling a seat position ............ 87
Storing a seat position ... .... .. .... 87
Driving messages .................... 27
Driving mode
See Adaptive Air Suspens ion . .... .. 178
Driving offroad
Driving through water .... .. ... ...
267
Dr iving tips .. ............ .... ... 266
Rules of behavior ........ .... .... 266
Sand and mud ................. .. 267
Snow -covered g round .. .. .... ..... 267
Unpaved roads . .. .. .. .. .... ..... 267
Driving safely . .. ..... ... ........... 188
Driving through water ... .. .. .. .... .. 267
D. . t· riving 1me .... .... ...... .......... 37
Duplicate key .. .. .. ..... ..... ... .. .. 40
Dust filter
Climate controls .................
109
E
Easy entry feature 124
Electric seat adjustment
See Power seat . . . . . . . . . . . . . . . . . . . 84
Electronic differential lock (EDL)
How the system works . ......... ..
254
Warning/indicator l ights ... ... ... .. 19
Electronic immobilizer ................ 43
Electronic power control
(EPC) warn ing/indicato r light ...... ..
16
Electronic speed limiter ... ..... ..... .. 26
Electronic stabilization program (ESP)
Hill descent control ........ ... .. . 252
How the system works .......... .. 252
Offroad mode ............ .. ..... 252
Warning/indicator l ights . .. .. .. .. .. 16
Emergency flasher . . . . . . . . . . . . . . . . . . . 68
Wa rning/indicator l ights ... .. .... .. 17
Emergency locking of doors ... .. .. .. .. 48
Emergency operation
Panoramic sliding sunroof .. ..
62, 63, 64
Rear lid ....... .. .... .. .. .. .... .. 52
Emergency start ing ........... ... .. . 352
Emergency towing .... ..... .... .. .. . 355
Energy management ........... .... . 259
Battery power .. .. .. .. .. .... ..... 260
Driver notification ............... . 260
Engine
Compartment ............... .. ..
298
Coolant ................. ... ... . 304
Hood . .. .. ..... .......... .. .. .. 296
Starting .. .... .. .. .. .. .. .... 124, 125
Starting with jumper cables .. .... .. 352
Stopping ........... ...... .... .. 126
Engine compartment
Safety instructions ...............
297
Working the engine compartment .. 297
Engine coolant system ............... 304
Adding coolant ............ .. .. .. 306
Checking coolant level ............ 305
Checking the engine coolant level . .. 305
Malfunction .. .. .. .. .... ... ..... .. 30
Radiator fan . .. .. ............... 307
Engine coolant temperature
Temperature gauge .. .... .. .. .. .. . 10
Engine data ................. .. .. .. 363
Engine hood
Closing ........ ... ... ... .. .. ....
297
How to release the hood .......... 296
Engine oil ............. ...... .... .. 299
Adding ............. .. .... .... .. 302
Additives .. ............ .... ... .. 302
Changing .. ..... ...... ... ... .. .. 303
Checking the engine oil level .... . .. 301
Consumption .. .. .... .. ...... .. .. 300
Indicat ions and conditions requiring extra
checking . .. .. .. .. .............
301
Oil grades . .. .. .... ............. 299
Recommended oil check intervals ... 301
Specifica tion and viscosity ..... .. .. 299

__ _:._A..:. l:.! p:.. h ::....:..:: a:.:b:.. e=-= t.:..:ic :.:a:.. l:.....:..: in~ d:...:e :..: x.:...._ ___________________________________________ _
Reserve ..... .... ........ .... ... . 12
Tank capacity . .. .. .. ...... ... .. .. 363
Unlocking the fuel filler flap by hand 292
Fuse arrangement ... ............... 346
G
Garage door opener (Homelink®) ...... 183
Gas d ischarge lamps ........ .. .... .. 350
Gauges Engine coolant temperature . ... .... 10
Fuel gauge . .... .. .... .. .. .. .. .... 12
Speedometer ... .. .. ........ .. . ... 12
T achometer ...................... 11
Tr ip odometer ............. .... .. . 12
General illustration Instruments and controls ............ 9
General rules and driving tips ......... 266
Before driving offroad ........ .... 266
Driving offroad .................. 266
Glossa ry of tire and loading terminology 315
Glove compartment ........ ......... 105
Cooling box ..... ........ .... .. .. 106
Valet key function ......... ... .. .. . 43
Glove compartment -emergency unlocking ..
106
Glow plug system
Indicator light ............. .... .. . 16
Gradient angle .................. ... 266
Gross Vehicle We ight Rating (GVWR) ... 361
Ground clearance .. .. ............ ... 266
H
Head restraints ............... .... .. 193
Adjusting .. .. .... .. .... .. .. .. ... 193
Front seats . . . . . . . . . . . . . . . . . . . . . . 90
Rear seats .. .. ........... ..... 91, 92
Headlight washer reservoir ........... 312
Headlights ............ ... .. .. ... ... 65
Adaptive Light ............. .... .. . 68
Defective . . . . . . . . . . . . . . . . . . . . . . . . 24
Front fog lights ............ ... .. .. 67
Headlight range control . ........... 34
Switching
off ......... .. .. .. .. .. .. 65
Switching on ......... .... .. ...... 65
Washer system . ..... ... . ... .. .. .. 75
Xenon headlights .... ............. 65
Heated outside mirrors
79
Heated seats Front ................... .. .... . 119
Rear ............... ..... .. .. .. . 120
Rear (four-zone automatic comfort air
conditioning) ..... ...... .. .. .. . 120
Heated steering wheel ... ..... ....... 121
Heated washer jets
Wiper and washer system .... .. .. .. 72
Heating Climate controls ............... .. 109
Heavy clothing and safety belts ....... 202
H igh beam ......... .... .... .. .. . 65 , 69
Warning/indicator lights ..... .. .. .. 19
High voltage warning label .... .... ... 360
Hi ll descent control ..... ............ 252 Hill hold
Starting on hills 131
Homelink ® universal remote control ... 183
Hood Opening ............ .... .... .. .. 296
Release lever ... .. .. ..... .. .. .. .. 296
Horn .................. .... ... ... ... 9
How are child restraint system anchors related to child safety .... ....... ... .. .. 244
How many airbags does my vehicle have? ...
216
How often should I check my tire pressures? . 321
How safety belt pretensioners work .... 207
Hydroplaning ......... ............. 325
I
Ignition key ................ ..... .. 124
Ignition lock .. .. ............. .. .. .. 124
Ma lfunct ion .... .. .. .... ....... 31, 35
Ignition lock positions ... .. .. .. .... .. 124
Important things to do before driving .. 189
Improperly worn safety belts ... .. .. .. 207
Indicator lights . . . . . . . . . . . . . . . . . . . . . . 14
Airbag system ....... .. .. .. .. 220,221
PASSENGER AIR BAG OFF .... .... .. 221
Infant seats ................ ... .. .. 236
Inflatable spare tire .. .. .. .. .. .... ... 338
Inflating ........... .. .... .... .. 339
Inside rear view mirror .. ........... 77, 78
Installing child safety seats Safety belts ............... .. .. .. 241