2010 AUDI Q7 engine coolant

_________________________________________________ O_ n_ t_ h_ e_ r _o_ a_d _ __.fflll
0 Note
Do not stop the engine immediately after hard or extended driving .
Keep the engine running for approximately two minutes to prevent
excessive heat build-up.•
Starting and stopping the engine
with Convenience key
Applies to veh icle s: with Con venie nce ke y
Starting the engine with the {START) button
This button switches on the ignition and starts the
engine.
Fig . 123 Convenience
key: ENGINE START
button
The [START] button is provided with two-stage operation
=:> fig. 123.
Switching the ignition on
- Press the [ START] button once to the first stage to switch
on only the ignition .
Gasoline engine: Starting the engine
-Step on the brake.
Contro ls a nd e quip ­
m en t Vehicle
OP-eration
-Move the selector lever to the P or N position =:>& .
- Press the
[START] button to the second stage to start the
engine.
Diesel engine: Starting the engine
- Step on the brake.
- Move the selector lever to the P or N position =:>& .
- Press the
[START] button down to the first level to begin
the preheating process. The glow plug indicator light
illuminates when the glow plug system is active.
- When the indicator light switches off, press the
[START] button down to the second level to start the
engine.
After a cold engine is started, there may be a brief period of increased
noise because oil pressure must first build up in the hydraulic valve
adjusters . This is normal and not a cause for concern .
If the engine does not start immediately, stop trying after 10 seconds
and then try to restart the engine about 30 seconds later.
Glow plug system*
Diesel engines are equipped with a glow plug system whose
preheating time is controlled by the coolant and outside tempera­
ture . Start the engine
immediately after the glow plug indicator light
switches off.
Th e glow plug indicator light will only illuminate for approximately 1
second when the engine is warm or the outs ide temperature is higher
than 46 °F (8 °C). That means you can start the engine
immediately.
& WARNING
Never allow the engine to run in confined spaces· danger of
asphyxiation.
Vehicle care Do-it-yourselt service iTechnical data

1111..__0_ n_ t_h _e_ r_o _ a_ d _________________________________________________ _
0 Note
• Avoid high eng ine rpm, full thrott le and heavy engine loads unt il
the eng ine has reached operating tempe ratur e -othe rwise you risk
eng ine damage.
• T he engine cannot be started by p ushing or tow ing the vehicle.
Do not a llow the engine to warm up with the vehicle stationary . Start
dr iving right away. In this way yo u avoid unnecessary emiss io ns.
(I] Tips
If you open the drive r's door when the ignition is switched on, a
bu zzer sounds and the message
Ignit ion is on appears in the instru­
me nt cl uste r display. Please swi tch t he ig nition off. •
Applies to ve hicle s: with Co nve nie n ce ke y
Switching engine off with the !STOP] button
-Bring your vehicle to a comp lete stop .
Fig. 124 C onv enience
k ey:
ENGINE STO P
bu tt on
- Move the se lector lever to the P or N position.
- P ress the [S T OP] button ~ fig . 12 4.
Pressing the (S T OP] button once switches off the engine and the igni­
t ion .
If you press the I ST OP I bu tto n ag ain for more tha n 1 second,
the steering is loc ked, provided that the selector lever is in the P posi­
tion =>& .
Emergency OFF function
If necessary, the en gine can be sw itched off w ith the se lec tor lever in
the
R, Dor S positions . To do so, step on the brake pedal and press
and hold t he [STOP) but ton (veh icle speed mus t be less than
6 mph
/ 10 km/h .
& WARNING
• Never turn off the engine until the vehicle has come to a
c omplete stop.
• The brake booster and servotronic only work when the engine
i s running. With the ignition turned off , you have to apply more
force when steering or b raking. Since you cannot steer and stop
normally, this can lead to accident s and seriou s injuries.
• For safety rea sons , you should always park your vehicle with
the selector lever in P. Otherwi se, the vehicle could inadvertently
roll away.
• After the engine has been switched off, the radiator fan can
continue to
run for up to 10 minutes -even with the ignition
switched off . It can al so swit ch on again after some time if the
coolant temperature r ises as the result of a heat buildup or if the
engine i s hot and the engine compartment is additionally he ated
by the sun's rays.
0 Note
If the eng ine has bee n under heavy load for an extended period, heat
builds up in the engine compartment after the engine is switched off
- there is a risk of damaging the eng ine. Allow the engine to run at idle
for abo ut 2 min utes befo re switching it off .•

pressure label is located o n the dr iver's side B-pillar. Inflate trailer
t ires to tra ile r and t ire ma nufacturers' spec ifications.
Lights
T he headl ight settings shou ld be chec ked with the tr ailer attached
before driving off. Check to make sure both vehicle and trailer lights
are wo rking properly.
Safety chains
Be sure tra ile r safety cha ins are p roperly connected from the t rai ler
to the hitch on the vehicle. Leave enough slack in the chains to perm it
tu rning corners . When you install sa fe ty ch ains, ma ke sure they will
not drag on the road when you are driving.
T he chains should cross under the trai ler tongue to prevent it from
dropping in case of separation from the h itch .
0 Note
If you are goi ng to tow a trai ler , you must activate the trai ler opera­
tion mode =>
page 180, "Towing a trailer". •
Driving instructior,s
Driving with a trailer always requires e xtra care and
consideration.
To obtain the best possib le handling of ve hicle a nd trailer ,
please note the following :
- Do not tow a loaded trailer when your car itself is not
loaded.
- Be especia lly careful when pass ing other vehicles .
- Observe speed limi ts.
- Do not drive at the maximum pe rmissible speed.
Controls and equip­
ment Safety first Vehicle operation
- Always apply brakes early.
- Mo
nitor the temperature gauge.
Weight distri but ion
T owing a loaded trailer with an empty car results in a highly unstable
distribution of we ight . If t his 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 veh icle shou ld be loaded to the extent poss ible and permissib le,
wh ile keeping the tra ile r as lig ht as poss ible unde r the ci rc u mstances.
Whe never possible, transfer some cargo to the luggage compart ­
me nt o f the tow vehicle while observing tongue load requirements
and vehicle loading considerations.
Speed
The higher the speed, the more d ifficult it becomes for the driver to
control the r ig . Do not dr ive at the maxim um permiss ible speed .
Reduce your speed eve n more if load, weather or w ind conditions are
unfavorable -particular ly when going downhill.
Reduce vehicle speed
immed iately if the tra ile r shows the slightest
sign of swaying.
Do not tr y to stop the s wayi ng by a ccele rating .
Observe speed lim its. In some areas, speeds for veh icles towing
trailers are lowe r than for regular veh icles .
Always apply brakes early. When driving downhi ll, shift into a lower
gear to use the engine brak ing effect to slow t he ve hicle . Use of the
brakes alone can cause them to overheat and fa il.
Coolant temperatur e
The coo lant temperature gauge=> page 10 must be observed care­
fu lly. If the needle moves close to the upper end of the sca le, reduce
speed immediately and/or turn off the air conditioner.
If the coo lant temperature warning light in the instrument clus ter
starts flash ing
- F- , pull off the road, stop and let the engine idle for
about two m inutes to prevent hea t buil d-up.
Vehicle care Do-it-yourself service Technical data

___ C_h_ e_c _k _i_n -=g :a,__ a_n_ d_ f_ i_ l _li _n _,g;._ __________________________________________ _
Checking and filling
Engine hood
Releasing the engine hood
The engine hood is released from inside the vehicle.
-Open the driver's door.
Fig. 229 Driver's side
footwell: engine hood
release lever
-Pull the release lever on the left under the instrument
panel => fig . 229 in the direction of the arrow .
The hood pops up slightly under spring pressure .•
Opening the engine hood
Fig. 230 Release lever
under the engine hood
Before opening the engine hood, make sure that the wind­
shield wipers are flat against the windshield. Otherwise, they
could damage the paint on the hood.
- Lift the hood slightly =>& .
- Pull up on the release under the hood => fig. 230. This
releases the catch.
- Open the hood all the way.
& WARNING
Hot engine coolant can burn you.
• 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. •

___________________________________________ C..:...._ h:....:e :....:c:..:. k.::..: i..:.. n .:..:g:!:....:: a....:. n..:.. d~ f:....:. i.:..ll :.:.i:....:n :.:g !....- _1!'11
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.
Safety first
& 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 Technical data

___ C_h_ e_c _k _i_n -=g :a,__ a_n_ d_ f_ i_ l _li _n _,g;._ __________________________________________ _
& WARNING (continued)
-Always use extreme caution to prevent clothing, jewelry, or
long hair from getting caught in the radiator fan, V-belts or
other moving parts, or from contacting hot parts. Tie back hair
before starting, and do not wear clothing that will hang or
droop into the engine.
• Minimize exposure to emission and chemical hazards=:>
/1::..
& WARNING
California Proposition 65 Warning:
• Engine exhaust, some of its constituents, and certain vehicle
components contain or emit chemicals known to the State of Cali­
fornia to cause cancer and birth defects and reproductive harm. In
addition, certain fluids contained in vehicles and certain products
of component wear contain or emit chemicals known to the State
of California to cause cancer and birth defects or other reproduc­
tive harm.
• Battery posts, terminals and related accessories contain lead
and lead compounds, chemicals known to the State of California
to cause cancer and reproductive harms. Wash hands after
handling.
0 Note
When adding fluids, a lways make sure that they are poured into the
proper container or filler open ing , otherwise serious damage to
vehicle systems wi ll occur.
ci> For the sake of the environment
To detect leaks in time, inspect the vehicle floor pan from underneath
reg ular ly. If yo u see spots from oil or other vehicle fl uids, have your
vehicle inspected by an authorized Audi dea ler .•
Engine compartment
These are the most important items that you can check.
Fig. 231 Typical layout for containers, engine oil dipstick and engine oil filler
cap
© Windshield/headlight washer container ( q ) . . . . . . . . 312
@ Coolant expansion tank (- L ) . . . . . . . . . . . . . . . . . . . . . 305
® Engine oil f iller cap
("l!::r.) . . . . . . . . . . . . . . . . . . . . . . . . 302
© Engine oil dipstick (orange) . . . . . . . . . . . . . . . . . . . . . . 301
® Brake fluid reservoir ( ) . . . . . . . . . . . . . . . . . . . . . . . . 307
© Power steering reservoir . . . . . . . . . . . . . . . . . . . . . . . . 257
0 Jump start connector( +) u nder a cover,(-) with hex head
screw .. ... ... ...... ........ ......... .... .. .. 311,352
The position of the engine oil filling hole and the engine oil dipstick
=:> fig. 231 (position ® and ©> can vary according to the type of
eng ine. .,_

lffll __ C_ h_ e_c _k _i _ n _g ~ a_n _d_ f_il _l_in _ g _________________________________________ _
& WARNING (conti nu ed )
• Engine oil is poisonous . Keep it well out of the reach of chil­
dren .
• Continuous contact with u sed engine oil is harmful to your
skin . Alway s protect your skin by wa shing thoroughly with soap
and water.
0 Note
Never mix oi l additives wit h your engine oil. These additives can
damage your engine and adverse ly affect your Audi Limited New
Vehicle Warranty.
~ For the sake of the environment
• Before chang ing the oil, first make sure you know where you can
prope rly d is p ose of the o ld oil.
• Always dispose of used oi l proper ly. Never dump it o n garden soi l,
in wooded areas, i nto streams o r down sewage d rains.
• Recycle used oi l by taking it to a used engine oil co llection facility
in yo ur area, or contact a se rvice station .
• We st rongly recommend t hat you have you r oi l changed by an
authorized Audi dealer or a qualified workshop with the specia l tools
and expertise required, and proper means of disposa l.•
Engine cooling system
Coolant
The e ngine co o la nt per form s two functio ns: it keeps the
engine from ove rh eati ng and it protects t he engine from
free zing in the winter .
The cooling system is sealed an d genera lly req uir es little attention. The cooling system has been f
illed at the factory wit h a permanent
c oo lant whi ch does no t need to be c hanged . Th e coolan t cons ists o f a
mixt ure of water and the manufacturer's glycol-basedcoolant addi ­
tive G12+ + antifreeze with anticorrosion ad dit ives (50% for USA
mode ls; 60% for Ca nadian models) . This mixture both ass ures the
necessary frost protection and protects meta l components in the
eng ine's cooling system from co rrosion and scaling. It also raise s the
boiling point of the coo lant .
Do not re du ce the co ncent ration of the coo lant in the summer by
add ing p la in water .
The proportion of coolant add itive must be at
least 50% but not more than 60%
to mai ntain an tifreeze pro tection
and coo ling efficiency . If the coolant frost p rotect io n i s too low, the
coo lant co uld freeze an d damage t he veh icle heating and engine
coo ling system .
For year-round driving, antifree ze is added at the factory for temper­
a tures dow n to:
• -31°F(-35°C)USA
• - 4 0 °F ( -40 °C) Canad a.
You can mix the G12 ++ coo lant addit ive w ith other additives (G12+ or
G 12). A lways check with yo ur autho rize d Audi dea ler.
& WARNING
Before you che ck anything in the engine compartment, always
read and heed all WARNINGS~
& in "Work ing in the engine
compartment" on
page 297 .
0 Note
• Before w inter sets in, have the coolan t checked to see i f the
coo lant add itive in yo ur vehicle is s uff ic ient to meet the cl ima te
conditions. This is especially important if yo u live in a region where
the winter is ext reme ly cold . If necessa ry, increase the proport ion of
coo lant add itive to 60%.
• When ad ding coolant add itive to you r cooling sys tem, remembe r:_.,

_____________________________________________ C_h _ e_ c_ k_in --= g:-. a_n _d_ f_i _ll _i_n -=g =-- ____.•
- We recommend using only coolant additive Gl2 ++ (check the
l a bel) for yo ur vehicle. This coolant ad dit ive is available at au tho·
r ized Audi dealers . Other types of antifreeze can s ignificantly
reduce corrosion protection. The resulting corrosion can cause a
loss of coolant and serious engine damage .
• Do not add any type of radiator leak sealant to your vehicle's
eng ine coo lant . Adding radiator repa ir fluid may adversely affect the
function and performance of your cooling system and could result in
damage not covered by your New Vehicle Limited Warranty .•
Checking the engine coolant Level
The engine coolant level can be checked with a quick
glance .
Fig. 2 35 En gin e
c o mpar tmen t: C oolant
ex pansion tank
Before you c heck anything in the eng ine compartment,
always read and heed all WARNINGS~ & in "Working in
the e ngine compartment" on
page 297.
- Turn off the ignit ion .
- Let t he eng ine cool down .
- Place a thick rag over the coolant expans ion tank
~ fig . 235 and carefully twist the cap counter ·clockwise
~ & -
Vehicle OP-eration
-Read the engine coolant level in th e open coo lant expan ·
sion tank ~ fig . 235 . With a cold engine, the coolant level
should be between the "min" and "max" ma rkings . Whe n
the engine is warm , the level may be slight ly above the
"max" marking .
The location o f the coo lant expansion tank can be seen in the engine
compartment illustration=>
page 298 .
To obt ain an accurate reading , the engine must be sw itched off.
Th e expans ion t an k in your vehicle is equippe d with an electric coolant
level sensor.
When the coolant lev el is too low, the warning light in the Auto·Check
System=>
page 30 will blink until you add coolant and t he level has
been resto red to normal. Even though there is an electric coolant
level sensor, we st ill recommend you check the coolant leve l from
time to time.
Coolant loss
Coolant loss may indicate a leak in the coo ling system . In the event of
coo lant loss , the cooling system sho uld be inspected immed iate ly by
your authorized Aud i dea ler . It is not enough mere ly to add coolant.
In a
s ealed system, losses can occu r only if the boiling point of the
coolant is exceeded as a result of ove rheating .
& WARNING
The cooling system is under pressure and can get ve ry hot. Reduce
the ri sk of scalding from hot coolant by following the se steps.
• Turn off the engine and allow it to cool down .
• Protect your face, hand s and arms from e scaping fluid and
s team b y co ve ring the cap with a large, thi ck r ag.
• Turn the cap slowly and ver y carefully in a counter-clo ckwise
direction whil e applying light , downward pre ssure on the top of
thecap .
~
Vehicle care Do-it-yourselt service iTechnical data