2009 AUDI Q7 coolant temperature

pillar. On Canada vehicles, the tire pressure label is located either on
t he driver's side 8 -pillar or inside the fuel fil ler flap. Inflate trailer
tires to trailer and tire manufacturers' specifications.
L ight s
The head light settings should be checked with the trailer attached
before driving off . Check to make sure both vehicle and trai ler lights
are working properly.
Sa fety c hain s
Be sure trailer safety chains are properly connected from the trailer
to the hitch on the vehicle . Leave enough slack in the chains to
permit turning corners. When you insta ll safety chains, make sure
they will not drag on the road when you are driving .
The chains should cross under the tra iler tongue to prevent it from
dropping in case of separation from the hitch.
0 Note
If you are going to tow a traile r, you must activate the trailer opera ­
tion mode =>
page 211, "Towing a trailer" .
Driving instructions
Driving with a trailer always requires extra care and
consideration.
To obtain the best possible handling of vehicle and trailer,
please note the fo llow ing:
- Do not tow a loaded trailer when your car i tse lf is not
loaded .
- Be especia lly careful when passing other vehicles .
- Observe speed l imits.
- Do not drive at the maximum permiss ible speed .
Controls and equip­
ment Safety first Vehicle operation
Tr
aile r t owing
Always apply brakes early .
- Monitor the temperature gauge .
Weigh t dis tr ibution
Towing a loaded trailer wi th an empty car results in a highly
unstable dis tribution of weight . If this cannot be avoided , drive at
very low speeds only to avoid the risk of losing steering control.
A "balanced" rig is easier to operate and control. This means that
the tow vehicle should be loaded to the extent possible and permis ­
sib le, while keeping the trailer as light as possib le under the circum ­
stances . Whenever possible, transfer some cargo to the luggage
compartment of the tow vehicle whi le observing tongue load
requirements and vehicle loading considerations .
Speed
The higher th e speed, the more difficu lt it becomes for the driver to
control the rig . Do not drive at t he maximum pe rmissible speed.
Reduce your speed even more
if load, weather or wind conditions
a re unfavorable -particularly when going downhil l.
Reduce vehicle speed
i mmedi ate ly if the trailer shows the slightest
sign of swaying.
Do not tr y to s top the swaying by accelerating .
Observe speed limits . In some areas, speeds for vehicles towing
trailers are lower than for regular vehicles .
Always apply brakes early. When driving downhill, shift into a lower gear to use the engine braking effect to slow the vehicle. Use of the
brakes alone can cause them to overheat and fa il.
Coo lant t emperatu re
The coolant temperature gauge=> page 13 must be obse rved care ­
ful ly. If the need le moves close to the upper end of the sca le , reduce
speed immediately and/or turn off the air conditioner .
If the coolant temperature warning light in the instrument cluster
starts f lashing
- f- , pul l off the road, stop and let the engine idle for
about two minutes t o prevent heat build -up.
Vehicle care Do-it-yourself service Technical data

_____________________________________________ C_ h_ e .=....= c..:..k :..:.in :....:..:= g:.....= a..:..n .:....:d::......:. f.:..:il .:..:li ..:..n ::.:g:!....- __
•
Closing the engine hood
- Pull the hood down until the pressure from the struts is
reduced .
- Let the hood
drop down and latch in place. Do not try to
push it shut;
it may fail to engage => &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment.
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area
~ & .
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake .
& WARNING (continued)
• Move selector lever to "P" (Park).
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment .
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm . The coolant system is pressurized and hot coolant could
spray out.
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary :
- Always disconnect the battery.
- Never smoke or work near heaters or open flames . Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine
is running or being started, never touch:
- Ignition cables
- Other components of the high voltage electronic ignition system.
• If you must perform a check or repair with the engine running: -First, fully apply the parking brake, move selector lever to "P"
(Park). .,
Vehicle care
I t •

-~_C_ h_e _c _ k_ i_n ...:::g::;...._ a_n_ d_ f_ i_ll _in -'g:::;.._ ___________________________________________ _
G12+ +, G12 + or G12 is not available, do not use a different addit ive .
Use p lain water ins tead until you ca n get the c orrec t additive and
can restore the correct ratio . This should be done as soon as
poss ible.
If you have los t a considerable amount o f coo lant, then you s hould
add co ld antifreeze and cold water only when the engine is cold .
A lways us e
new en gi ne c oolant when refi llin g .
Do not fi ll coo lant above the "MAX" mark. Excess coolant wil l be
forced out through the pressure relief valve in the cap when the
engine beco mes hot.
& WARNING
• The cooling sy stem is under pressure and can get very hot .
Reduce the risk of s calding from hot coolant by following these
steps .
- Turn off the engine and allow it to cool down.
- Protect your face, hands and arms from escaping fluid and
steam by covering the cap with a large, thick rag .
- Turn the cap slowly and very carefully in a counter -clockwise
dire ction while applying light , downward pressure on the top
of the cap .
- To avoid being burned , do not spill antifreeze or coolant on
the exhaust system or hot engine parts . Under certain condi ­
tions , the ethylene glycol in engine coolant can catch fire.
• Antifreeze is po isonous . Always store antifreeze in its original
container and well out of the reach of children.
• If you drain the coolant , it must be caught and safely stored in
a proper container clearly marked "poison ".
0 Note
• Coo lant po llutes t he e nviro nment and cou ld cause a n en gin e
fire. Excess coolant wi ll be forced out through the pressure re lief
va lve in the cap when the eng ine becomes hot.
• I f, in an emergency, on ly wate r can be added, the correct ratio
between wate r and ant ifree ze::::>
page 337 must be restored as soon
as possib le .
W For the sake of the environment
Drained coolant should not be reused. Always dispose of used
coo la nt whi le observ ing all env iro nmen tal reg ulat io n s. •
Radiator fan
The radiato r fan switches on au toma tic ally by i tself.
The radiator fa n is dr iven by the eng ine via th e V -belt. The visco us
clutch regulates the speed of the fan according to the temperature
o f t he coo la nt.
An auxiliary electric radiator fan * sw itches on and off depending on
coo la nt t empe rat ure a nd othe r vehic le operating c ondi tio ns.
A ft er you sw itch the e ngine o ff, the au xiliary fa n ca n conti nue
running for up to 10 m inutes- even with the ignition off. It can even
switch o n again lat er by itsel f::::> & , if
• the temperature of the eng ine coo lant rises due to the heat
bu ild -up from the eng ine in the eng ine compartment, or
• the engine compartment heats up because the vehic le is parked
in i ntense sun ligh t.
& WARNING
• To reduce the ri sk of personal injury never touch the radiator
fan .
~

_____________________________________________ C_h_ e_ c _ k_in -= g_a _ n_d _ f_il _li _n ..;::g =-- ____.•
& WA RNING ! continued )
• The auxiliary ele ctric fan is temperature controlled and can
s w itch on suddenly even wh en t he engine is not runn ing .
• The auxiliary radiator fan swit ches on automatic ally when the
engin e coolant rea che s a cer tain temperature and will con tinue to
run until the coolant temperature drop s. •
Brake f luid
Checking brake fluid level
The brake fluid level c an be checke d with a quick gl ance .
Fig. 288 E ngine
comp artm ent: B ra ke
flui d rese rvoir
Be fore you check a nything in th e en g in e co mpart ment,
always read and heed all WARNINGS=> & in "Working in
t h e eng ine compartment" on
page 331.
- Read the brake fluid l eve l from the brake fluid reservoir
=> fig. 288. The brake flu id level mus t be between the
"MIN" and "MAX" markings.
The brake fluid reservoir is locate d at the rear partition of the engine
compartment on the left side=>
page 332.
The fluid level may drop slightly after some time due to the auto ­
ma tic adjustment of the brake pads. This is not cause for alarm .
If the brake fluid leve l falls
considerably below the "MIN" mark , the
brake warning/indicator light (U.S. models:
BRAKE , Canadian models:
«D> l will come on=>
page 23 and=> page 32 . Do not continue to
operate the vehicle. The complete brake system should be thor ­
oughly checked
by an author ized Audi dealer or qua lif ied workshop
and the cause corrected . If th e brake fluid level is too low, the brake
warning/indicator light w ill illumi nate. Contact an authorized Audi
dea ler
immedi ately .
[ i ] Tips
The brake fluid reservoir is located underneath the cover .•
Changing brake fluid
Have the brake fluid changed by an experience d techni ­
cian.
Brak e fluid absorbs mois ture from the air. If the wate r conten t in the
brake fluid is too high, corrosion in the brake sys tem may res ult
after a period of time . The boiling point of the brake fluid will also
decrease conside rably and decrease braking performance .
Therefore , the brake fluid mus t be changed
every two year s. Always
use new brake fluid which conforms to Federal Motor Vehicle S tan ­
da rd "FMVSS 116 DOT 4".
The brake fluid reservoir can be difficul t to reach, therefore , we
recommend that y ou have the brake fluid changed by your autho ­
rized
Audi deal er. Your dealer has the correct tools, the right brake
fluid and the know -how to do this for you .
& WARNING
• Brak e fluid is poi sonou s. It mu st be stored only in the clo sed
o riginal conta iner out of the rea ch of children! ..,.
Vehicle care I I irechnical data

__________________________________________________ C_o_ n _ s_u_ m_ e ___ r_l_ n _f_ o_ r _m...:....:.. a:.;..:. ti .... o:.. n ........ _llll
& WA RNIN G (continu ed )
• The engine compartment of any motor vehi cle i s a potentially
h az ardou s area. N ev er re ach into the are a arou nd or to uch the
r a di ator fan . It is temperature co ntrolled and can swi tc h o n
s uddenly -even wh en the engine i s off and the ignition key h as
been removed . The r adiator f an switches on autom atic all y w hen
the coolant reache s a certain temperature and will continue to run
until the coo lant t emper ature drop s.
• Alway s remov e th e ignition key befo re anyone get s under the
v ehi cle .
• Alway s s upport your vehi cle with safety sta nd s if it i s ne ces­
sa ry to wor k unde rne ath the veh icle . The ja ck suppl ied with the
v ehic le i s not adequ ate for thi s purpo se and could coll ap se
c au sin g s eriou s per son al in jury .
• If you m ust w ork under neath the vehi cle with the wheel s on
the ground , alwa ys m ake sure the veh icle i s on l eve l ground , that
the wheels ar e always securely blocked and that the engine
ca nn ot be sta rted .
• Alway s mak e sure the tran sm iss ion selecto r leve r (automatic
tr ansmi ssion ) is in "P " (P a rk po sition ) and the park brake is firml y
applied .
c£> For the sake of the environment
• Changing the engine settings w ill adverse ly affect emission
levels . This is detrimenta l to the environment and increases fuel
consumption.
• Always observe environmenta l regu lations when disposing of
old engine oil, used brake fluid, dirty engine coolant, spent batteries
or worn out tires.
• Undeployed airbag modules and pretens ioners might be classi ­
fied as Perchlorate Material -specia l handling may apply, see
www .dtsc .ca .gov/hazardouswaste/perchlorate. When the vehicle or
parts of the restraint system including airbag modules safety belts
with pretens ioners are scrapped, all applicable laws and regu la-
Controls and equip­
ment Safety first Vehicle operation
tions must be observed. Your authorized Audi dealer is familiar with
these requirements and we rec
ommend that you have your dea ler
perform this service for you .•
Additional accessories ,
modifications and parts replacement
Addition al a ccessori es and parts
replacement
Always c onsul t an authorized Audi dealer before
purchasing accessories.
Your vehicle incorporates the latest safety design features ensuring a high standard of act ive and passive safe ty .
This safety could be compromised by non -approved changes to the
vehic le . F or this reason, if par ts have to be replaced, please observe
the following points when insta lling additiona l accessories:
Approved Audi accessories and genuine Audi parts are avai lable
from authorized Audi dealers.
These dealers also have the necessary facilities, tools and trained specialis ts to install the parts and accessories prope rly.
& WARNING
Using the wrong spare part s or u sing non-approved acce ssorie s
can c ause seri ous persona l injur y.
• Use onl y acc essorie s ex pres sly approved by Audi and g enuine
Audi spare p art s
• The se p art s and acce ssorie s have been spe cia lly de signed to
be used on you r vehi cle .
• Nev er in stall acc ess orie s s uch a s telep hone cra d le s or
be ver age holder s on airb ag cover s or within th e airbag deploy-
Vehicle care Do-it-yourself service Tec hn ica l da ta

______________________________________________ A_ l_,_ p _h_ a_ b_e _t_ic _ a _ l _in _ d_e _ x __ lllll
Starting with jumper cables ... .... . 387
Stopp ing . . . . . . . . . . . . . . . . . . . . . . . . 144
Engine compartment Safety instructions . ...... ..... .. . 331
Working the engine compartment .. 331
Engine coolant system ...... .... .... . 337
Adding coolant ....... .... .... ... 339
Checking coolant level .. .... .. .... 338
Checking the engine coolant level . .. 338
Malfunction ..... .... .... ......... 33
Radiator fan ........ ............ . 340
Engine coolant temperature Temperature gauge ...... .... ...... 13
Engine data ............... ......... 399
Engine hood
Closing ..................... .... 331
How to rel ease the hood .... .... ... 330
Engine oil . ... .. ..... ........... .... 333
Adding .............. .... .... ... 336
Additives ... .. .... .... .... .... ... 336
Changing .... .... .... ........... 336
Checking the engine oil level ... .... 335
Indications and condit ions r equiring ext ra
checking .... .... .... ... .... .... 335
Oil consumption . .... ... .... ..... 334
Oil grades .. ...... .... ........... 333
Recommended oil check intervals .. . 335
Specification and viscosity .. ....... 333
Engine oil level .. .... .... .... .... .... 37
Engine oi l pressur e
Mal func tion ....... ..... .... ... ... 33
Engine oil sensor defective . .......... . 37
Engine speed limitation ............ ... 37
Controls and equip­
ment Safety first
Entry assist
Rear seats .... ...... ........ ... .. . 99
Environment Break -in period ...... ...... .... ... 297
Catalytic conv erter .... .... .... .... 298
Disposing o f your v ehicle battery ... 346
Driving a t high speeds ............ 299
Driving to minimi ze pollution and noise .
299
Fuel . .... ........ .... .... ... .... 327
Fuel economy .... ..... .. .... .... . 299
L e aks under your v ehicle .. ........ 331
L etting th e ve hicle stand and warm up ..
300
Proper disposal of drained brake fluid
341
P roper disposal of drained engine
coolant .. ...... .. .. .... .... .... 339
Proper disposal of drained engine o il 336
Recycl ing us ed engine o il .... ...... 336
Unl eaded fuel ... .. ...... ..... ... . 325
What should I do with an old battery? 346
EPC
See Electronic power control .. .. .... 19
ESP
S ee Electronic stabilization program
(ESP) .. .... ... .................. 19
Event Data Recorder (EDR) ... ....... .. 288
Expansion tank ........... ...... .... 338
Explanation of some technical terms .. . 302
Ext erior lighting in the mirror hous ing . .. 76
Eyeglasses compartment ............. 121
F
Fall line ... .. .... .... ...... .... ... .. 302
Fan Four -zone automatic comfort a ir
conditioning ... .. .... ........... 133
Radiator ..... .. ... ....... ... ..... 340
Flat tire Changing . .... .... .... .... ...... . 373
Floor mats . ... ...... .... ........ ... 226
Fog lights ........... ... .... .... ..... 75
Fo lding chocks .. ... ... .. .... .... .... 370
Fo ldin g master key with remote control .. 48
Foot pedals . ...... .. .... .... .... .... 226
For the sake of the environment Gasoline fumes and th e environment 327
L et ting your eng ine warm up ... ....
143
Reducing engine noise by early
upshifting . ...... ....... .... .. . .. 13
Refueling ..... .... .... .. .. ... .. .. 327
Saving fuel by early upshifting .... . .. 13
Using the rear window defogg er ... . 129
Fording depth ........... .. . ........ 302
Four -zone automa tic comfort a ir
conditioning ... .. .... ........... 131
Automatic mode in rear . ........ .. 132
Heated rear seats ...... .... ....... 137
Rear air distribution ... .... .... .... 133
Rear con trols .... .... .... .... ... . 131
Rear fan . .... ... .... ... .. .... .... 133
Rear operation .... ...... .... .... . 135
Rear temperatu re ............ ... .. 133
Vehicle operation Vehicle care Do-it-yourself service Technical data

-Alphabetical index
-----=-------------------------------------
Synchronization . ...... ... .. .. ... 135
Turning on/off .... .... ....... .... 132
Front airbags Description . ...... .... .......... 245
How they work . . . . . . . . . . . . . . . . . . . 250
Front arm rest Cup holder .. ...... .... ..... .. ... 103
Storage compar tmen t .... .... ... . 103
Front ashtray . . . . . . . . . . . . . . . . . . . . . . . 116
Front fog lights . . . . . . . . . . . . . . . . . . . . . . 75
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . 92
Adjusting ....................... 223
Child restraints in the front seat .... 243
Frontal collisions and the laws of physics ...
232
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . 325
Blended gasoline ... .. .... ...... . 325
Consumption . . . . . . . . . . . . . . . . . . . . . 40
Fi ller neck ... .. .... .... .... .... .. 326
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . 15
Gasoline .. .... .... ....... .... ... 325
Gasoline additives .. ....... .... ... 326
Low fuel level . . . . . . . . . . . . . . . . . . 15, 36
Octane rating . ...... ......... .... 325
Recommendation . . . . . . . . . . . . . . . . 325
Refuel ling . .... .... .... ... .... ... 327
Reserve ... ....... .... .... .... .... 15
Tank capacity . . . . . . . . . . . . . . . . . . . . 399
Un locking the fue l filler flap by hand 329
Fuse arrangement . . . . . . . . . . . . . . . . . . 38 1 G
Garage door opener (HomeLink®l . .... 214
Gas discharge lamps ................ 385
Gauges Engine coolant temperature . ...... . 13
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . 15
Speedometer . . . . . . . . . . . . . . . . . . . . . 15
Tachometer ...................... 14
Trip odometer ....... ...... ..... .. 15
General illustration Instruments and controls . . . . . . . . . . . 11
General rules and driving tips ... ... ... 302
Before driving offro.ad . ...... .... . 302
Driving offroad .... .... .... .... .. 302
G lossary of tire and loading terminology .. .
348
Glove compartment .. .... .... .... ... 119
Cooling box . . . . . . . . . . . . . . . . . . . . . 120
Valet key function ... .. ...... .... .. 51
G love compartment -emergency unlocking .
120
Gradient angle ... ... .... .... .... ... 302
Gross Vehic le Weight Rating (GVWR) . .. 397
Ground clearance .... ... ... .. .... ... 302
H
Head restraints ..... .. .... .... .... .. 225
Adjusting ..... .. . ... ... ... .. . ... 225
Front seats . . . . . . . . . . . . . . . . . . . . . . 101
Rear seats .... ..... .. ..... .. 101, 102
Headlight washer reservoir . .... .... .. 346 Headlights
... ..... .. .... ........ .. . . 73
Adaptive Light ..... ... .... .... ... . 76
Defective . . . . . . . . . . . . . . . . . . . . . . . . . 27
Front fog lights .... ... .... .... .... 75
Headlight range control defective .... 37
Switching off ... .. .... .... .... .... 73
Switching on ...... .... ........... 73
Washer system . . . . . . . . . . . . . . . . . . . 83
Xenon headlights ..... .... .... .... 73
Heated outside mirrors ... .... .... .... 88
Heated seats Front ......... .... .... ... .... ... 136
Rear .. ..... ... .... .... ... .... ... 137
Rear seats (four -zone automatic comfort
air conditioning) ....... .. .... ... 137
Heated steering wheel . .... ... .... ... 138
Heated washer jets
Wiper and washer system .. .... .... 8 1
Heating Climate controls ...... .... .... ... 123
Heavy clothing and safety belts ....... 234
High beam ... .... .... .... ... .... . 73, 77
Warning/indicator lights .... ... .... . 22
High voltage warning label .. ...... ... 396
Hi ll descent control .... ... ...... .... 288
Hill hold assist
Starting on hills ... .... .... .... ... 148
HomeLink® universal remote control 214
Hood Opening ... .... .... ... .... .... .. 330
Release lever ..... ....... .. ...... 330
Horn ............................... 11