2010 AUDI Q7 check engine

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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 -
-------------------=------=:;______,.J,,...
Battery charging
Starting the engine requires a well charged battery.
Fig. 237 Engine
compa rtment : Connec­
tor s for charger and
jumper cables
Always read and heed all WARNINGS below=> & and => &
in "Working on the battery" on
page 309.
- Turn off the ignition and all electrical consumers.
- Make sure the area is well ventilated when you charge the
battery.
- Open the hood :::::,
page 296.
-Open the red cover on the positive pole =>fig. 23 7.
- Connect the charger connectors according to the instruc-
tions to the
jump start bolts . (Bolts under the red cover=
"positive", Bolts with hex head
= "negative") .
- Only now plug the mains lead for the charging equipment
into the wall outlet and turn it on =>& .
-Make sure the charging rate is not over 30 amps/14.8
Volt.
- When the battery is fully charged: Turn the charging
equipment off and remove the mains lead from the wall
outlet.
Vehicle OP-eration
-Now remove the clamps for the charging equipment.
- Close the red cover on the positive pole.
- Close the hood :::::,
page 297.
A discharged battery can freeze at temperatures of only O 0C. Allow a
frozen battery to thaw completely before attempting to charge it
~ & .However, we recommend not using a thawed battery again
because the battery casing can be cracked due to ice formation and
can leak battery acid.
Battery charging (Maximum charging rate of 30
amps/14.8 Volt)
When charging at low voltages (e.g. with a trickle charger ), the
battery cables do not have to be disconnected first . The battery caps
sho uld
not be opened when charging a battery.
It is not necessary to remove the battery from the luggage com part·
ment.
Fast charging the battery (charging rate above 14.8
Volts)
For technical reasons do not use a battery charger that uses voltage
greater than 14.8 Volts to charge your vehicle's battery .
& WARNING
Charging a battery can be dangerous.
• Always follow the operating instructions provided by the
battery charger manufacturer when charging your battery.
• Never charge a frozen battery. It may explode because of gas
trapped in the ice. Allow a frozen battery to thaw out first.
• Do not reuse batteries which were frozen. The battery housing
may have cracked and weakened when the battery froze.
• Charge the battery
in a well ventilated area. Keep away from
open flame or electrical spark. Do not smoke. Hydrogen gas gener-
ated by the battery is explosive. •
Vehicle care Do-it-yourselt service Technical 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. ..,_

Checking and filling --------------~--EMI
- Lift the filler cap tongue to add washer fluid . You can fill
the container to the top .
- Press the cap back onto the filler neck after filling the container.
You can find the reservoir capacit y in the table in=:> page 363.
To prevent lime residue from bu ilding up on the spray jets, use
distilled water when refilling. Always add a g lass cleaner so lution
(with frost protection in the w inter) .
0 Note
Do not mix engine coolant antifreeze or any other additives to fill up
the windshie ld washer reservo ir .•
Safety first Vehicle care Technical data

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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

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Connect POSITIVE(+) to POSITIVE(+) (red)
- Open the red cover on the positive pole=> page 353,
fig. 262.
1. Connect one end of the positive cable (red) on the
jump
start bolt=>
page 353, fig. 263 (D (Bolts under red cover
= "positive") of the vehicle to be started @.
2. Connect the other end to the positive terminal @ of the
booster battery @.
Connect NEGATIVE(-) to NEGATIVE(-)
(black)
3. Connect one end to the negative terminal@ of the
booster battery @.
4. Connect the other end of the negative cable (black) to the
jump start bolt© (Bolts with hex head= "negative ") of
the vehicle to be started
@.
Starting the engine
- Start the engine of the vehicle with the booster battery.
Run the engine at a moderate speed.
- Start engine with discharged vehicle battery in the usual
manner.
- If the engine fails to start: do not keep the starter
cranking for longer than 10 seconds. Wait for about
30 seconds and then try again.
- With engine running, remove jumper cables from both
vehicles in the exact
reverse order.
- Close the red cover on the positive pole.
The battery is vented to the outside to prevent gases from entering
the vehicle interior. Make sure that the jumper clamps are well
connected with their
metal parts in full contact with the battery
terminals.
& WARNING
To avoid serious personal injury and damage to the vehicle, heed all warnings and instructions of the jumper cable manufacturer. If
in doubt, call for road service.
• Jumper cables must be long enough so that the vehicles do not
touch.
• When connecting jumper cables, make sure that they cannot
get caught in any moving parts in the engine compartment.
• Before you check anything in the engine compartment, always
read and heed all WARNINGS~
page 286, "Engine compart­
ment".
0 Note
Improper hook-up of jumper cables can ruin the generator.
• Always connect POSITIVE(+) to POSITIVE( +), and NEGATIVE( -)
to NEGATIVE(-) ground post of the battery manager control unit.
• Check that all screw plugs on the battery cells are screwed in
firmly . If not, tighten plugs prior to connecting clamp on negative
battery terminal.
• Please note that the procedure for connecting a jumper cable as
described
above applies specifically to the case of your vehicle being
jump started. When you are giving a jump start to another vehicle, do
not connect the negative(-) cable to the negative(-) terminal on the
discharged battery©~
page 353, fig. 263. Instead, securely
connect the negative(-) cable to either a solid metal component that
is firmly bolted to the engine block or to the engine block itself.
If the
battery that is being charged does not
vent to the outside, escaping
battery gas could ignite and explode! •

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- Insert a rubber pad between the floor jack/workshop hoist
and the lifting points.
If you must lift your vehicle with a floor jack to work underneath,
be sure the vehicle is safely supported on stands intended for this
purpose.
Front lifting point
The lifting point is located on the floor pan reinforcement about at
t he same level as the jack mounting point::::;,
page 357, fig. 269. Do
not lift the vehicle at the vertical sill reinforcement.
Rear lifting point
The lifting point is located on the vertical reinforcement of the lower
sill fo r the onboa rd jack ::::;,
page 357, fig. 270 .
Lifting with vehicle jack
Refer to::::;, page 342.
& WARNING
• To reduce the risk of serious injury and vehicle damage.
-Always lift the vehicle only at the special workshop hoist and
floor jack lift points illustrated::::;,
page 357, fig. 269 and
::::;, page 357, fig. 270.
- Failure to lift the vehicle at these points could cause the
vehicle to tilt or fall from a lift if there is a change in vehicle weight distribution and balance. This might happen, for
example, when heavy components such as the engine block or
transmission are removed.
• When removing heavy components like these, anchor vehicle
to hoist or add corresponding weights to maintain the center of
gravity. Otherwise, the vehicle might tilt or slip off the hoist,
causing serious personal injury.
0 Note
• Be aware of the following points before lifting the vehicle:
- The vehicle should never be lifted or jacked up from under­
neath the engine oil pan, the transmission housing, the front or
rear axle or the body side members. This could lead to serious
damage.
- To avoid damage to the underbody or chassis frame, a rubber
pad must be inserted between the floor jack and the lift points.
- Before driving over a workshop hoist, check that the vehicle
weight does not exceed the permissible lifting capacity of the
hoist.
- Before driving over a workshop hoist, ensure that there is sufficient clearance between the hoist and low parts of the
vehicle. •

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