2018 AUDI Q7 engine overheat

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::r ' Certain instrument cluster content can also be
displayed in the head-up display*
¢page 17.
A WARNING
Do not assume the roads are free of ice based
on the outside temperature display . Be aware
that there may be ice on roads even when the
outside temperature is around 41 °F (+5 °C)
and that ice can increase the risk of accidents .
(D Tips
- Depending on vehicle equipment, the in­
strument illumination (needles and gauges) may turn on when the lights are
off and the
ignition is switched on . The illumination for
the gauges reduces automatically and even­
tually turns off as brightness outside in­
creases. This function reminds the driver to
turn the low beams on at the appropriate
time.
- You can select the units used for tempera­
ture, speed and other measurements in the
Infotainment system¢
page 245.
-If your vehicle is stationary or if you are driv­
ing at very low speeds, the temperature dis­
played may be slightly higher than the ac­
tual temperature outside due to the heat ra­
diating from the engine.
- At temperatures below 41 °F (+5 °C), a
snowflake symbol appears in front of the
temperature display¢,&. .
Coolant temperature indicator
The coolant temperature display@¢ page 10,
fig . 3
or ¢ page 10, fig . 4 only functions when
the ignition is switched on. To prevent engine
damage, please observe the following notes
about the temperature ranges.
Cold range
If only the LEDs at the bottom of the gauge turn
on, the engine has not reached operating tem­ perature yet . Avoid high engine speeds, full ac­
celeration and heavy engine loads.
Cockpit overview
Normal range
The engine has reached its operating tempera­
ture once the LEDs up to the center of the gauge
turn on. If the. indicator light in the instru­
ment cluster display turns on, the coolant tem­
perature is too high ¢
page 22.
@ Note
-Auxiliary headlights and other accessories in
front of the cooling-air intake impair the
cooling effect of the coolant. This increases
the risk of the engine overheating during
high outside temperatures and heavy en­
gine load .
- The front spoiler also helps to distribute
cooling air correctly while driving. If the
spoiler is damaged, the cooling effect will
be impaired and the risk of the engine over­
heating will increase. See an authorized
Audi dealer or authorized Audi Service Fa­
cility for assistance.
{D Tips
Applies to: vehicles with diesel engines
Due to the high efficiency of these engines,
the engine may not always reach operating
temperature in cold outside temperatures.
This is normal and not a cause for concern.
Tachometer
The tachometer displays the engine speed in rev­
olutions per minute (RPM).
The beginning of the red zone in the tachometer
indicates the maximum permissible engine speed
for all gears once the engine has been broken in.
Before reaching this zone, you should shift into
the next highest gear, select the "D/S" selector
lever position, or remove your foot from the ac ­
celerator pedal.
@ Note
The needle in the tachometer@¢ page 10,
fig. 3
or ¢ page 10, fig. 4 may only be in the
red area of the gauge for a short time or there
is a risk of engine damage . The location where .,.
11

Cockpit overv iew
the red zone beg ins varies depending on the
engine.
@ For the sake of the environment
Upshifting early helps you to save fuel and re­
duces operating noise.
© Tips
Depending on t he e ngine : the engine speed
may be lim ited when the engine is cold -the
full engine ou tput wi ll not be avai lable . When
the engine is at operating temperat ure, the
red area in the tachomete r moves to a h igher
RPM range.
Fuel level
The display (J) ¢ page 10 , fig. 3 or ¢ page 10,
fig . 4 only functions when the ign ition is switch ­
ed on . When the display has reached the reserve
mark, a red L ED t urns on a nd the
tD in dicator
light turns on ¢
page 27. The red L ED w ill blink
when the f uel leve l is very low.
For the tank capac ity in you r vehicle, refer to the
Technical Data
r=v page 375.
(D Note
Never d rive until the tank is completely emp­
ty . The irregular supp ly of f uel that results
from that can ca use engine misfi res . Uncom­
busted fuel will the n ente r the exhaust sys­
t em. This can ca use overheating and damage
t o the cata lytic conver ter.
Odometer
F ig . 5 In st ru m ent cluster: odometer a nd re se t bu tton
12
Tr ip odometer and odometer
The trip odometer shows the dis tan ce driven
s ince it was last reset. It can be used to measure
short d istances.
The trip odometer ca n be reset to zero by press­
i ng th e ~ reset but ton.
The odometer shows the total distance that the
vehicle has been drive n.
Malfunction indicator
If there is a malfunction in the instrument clus­
ter,
DEF will appear in the trip odometer display.
Have the malfu nction corrected as soon as possi ­
ble .
(D Tips
The units of measu rement can be set in the
Infotainment system~
page 245.
Multifunction steering
wheel
Operating
Fi g. 6 D river informa tion sys te m disp lay
Fi g. 7 L eft sid e of m ultifun ction steer ing wh eel
Requirement: th e ignition must be switched on. .,.

Cockpit overview
A WARNING
Have the safety systems inspected immedi­
ately. Otherwise, there is a risk that the sys­
tems may not activate during a collision,
which increases the risk of serious injury or
death.
( CD ) Brake system
[I] Brakes overheating. Please shift to D
-
There was a heavy load on the brakes. Place the
selector lever in the "D/S" position in order to use
the engine braking effect and reduce the load on
the brakes.
~t~J/(O : Brake pads
II (USA models)/EiJ (Canada models) Brake
pads: wear limit reached. You can continue driv­
ing. Please contact Service
The brake pads are worn .
Drive to an authorized Audi dealer or authorized
Audi Service Facility as soon as possible to have
the malfunction corrected.
~ Engine control
II Drive system: malfunction! Please contact
Service
There is an engine control malfunction.
Drive slowly to an authorized Audi dealer or au­
thorized Audi Service Facility to have the engine
checked .
W Engine control (diesel engine)
Applies to: vehicles with diesel engines
The engine is preheating if the II indicator light
turns on when the ignition is switched on.
If the indicator light does not turn on or blinks
while driving, there is an engine control malfunc­
tion.
Immediately drive slowly to an authorized Audi
dealer or authorized Audi Service Facility to have
the malfunction corrected.
26
!?i Engine speed limitation
(II Maximum engine speed: XXXX rpm
The engine speed is automatically limited to the
speed displayed in the instrument cluster. This
protects the engine from overheating.
The engine speed limitation deactivates once the
engine is no longer in the critical temperature
range and you have released the accelerator ped­
al once .
If the engine speed limitation was activated by
an engine control malfunction, the
II indicator
light also turns on . Make sure the engine speed
does not go above the speed displayed, for exam­
ple when downshifting . Drive to an authorized
Audi dealer or authorized Audi Service Facility im­
mediately to have the malfunction corrected.
(D Tips
Depending on the engine: the engine speed
may be limited when the engine is cold -the
full engine output will not be available. When
the engine is at operating temperature, the
red area in the tachometer moves to a higher
RPM range.
~ ... Engine oil sensor
• Oil level system: malfunction! Please con­
tact Service
The sensor to check the engine oil level has
failed . Drive to an authorized Audi dealer or au­
thorized Audi Service Facility immediately to have
the malfunction corrected.
• Oil level sensor: oil change necessary. Please
contact Service
Fuel has entered the engine oil as a result of fre­
quent short drives. Avoid high engine speeds, full
acceleration and heavy engine loads. Drive to an
authorized Audi dealer or authorized Audi Service
Facility immediately to have the oil changed.
• Oil pressure sensor: malfunction! Please
contact Service
There is a malfunction in the oil pressure sensor.
Drive to an authorized Audi dealer or authorized .,.

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::r ' engaged, for example when you notice that t he
next traffic light is red . This produces an engine
b raking effect, wh ich he lps to protect the brakes
and tires and reduces the emissions and f uel con­
sumpt ion to zero (fuel shut-off dur ing decelera­
tion) .
Shift efficientl y
Upshifting earlier is an effective way to save fue l.
Staying in a gear too long uses fue l unnecessari­
ly .
Press down on the acce lerator peda l slowly and
avoid "kick -down".
Avoid full acceleration
You sho uld rare ly t rave l at the maxim um vehicle
speed. High speeds cause a d isp roportiona tely
hi gh increase in fuel consump tion, emissions and
traffic noise . Driving more slowly saves f uel.
Reduce idling time
The Start/Stop system* he lps to reduce the id ling
time automatically. In vehicles wi thout the Sta rt/
Stop system*, it is efficient to switch the engine
off when stopped at ra ilroad crossings and long
red lights . Stopping the engine for
30 -40 sec­
onds already saves more fuel than the amount of
extra fuel needed to restart the eng ine.
I t takes a very long time in idle to wa rm the en­
gine up to operating temperature . Wear and
emissions are especially high in the warm -up
phase. Therefore, you should begin driving im­
mediately after starting the engine. Avoid high
RPMs while do ing th is .
Have maintenance perf ormed regularly
By having maintenance performed regu larly on
your ve hicle, you can he lp to reduce fuel con ­
sumpt ion before you even start to drive. The
maintenance condition of your vehicle not only
affects traffic safety and long-term value but a l­
so impacts fuel consumption . A poorly main­
tained engine can lead to fuel consumpt ion that
i s
1 0% hi gher tha n normal.
Driving
Avoid short trips
T he eng ine and exh aust cleaning system mus t
r each their optima l operat ing temperatu re to ef ­
fectively reduce consumption and emissions.
A cold engine uses a d isp roportionately high
amoun t of fue l. The engine re ac h es operat ing
temperat ure and cons umption norma lizes on ly
after approximate ly 2.5 mi les (4 km) .
Check the tire pressure
To save fuel, ma ke sure the t ires are always i n­
flated to t he correct pressure~
page 340. The
fuel consumpt io n can increase by
5% if the pres ­
s u re is on ly
0 .5 bar too low. Due to the increased
rolling resistance, low tire pressures wi ll also
l ead to greater tire wear and will affect driving
behavior.
Do not drive on winter tires year -round, as this
will consume up to
10% more fuel.
Eliminate unnecessary weight
S ince eve ry po und of ext ra weight increases f uel
co nsump tion , a quick inspect io n of the luggage
compartment may be worth it to avoid unneces ­
sary weight .
When not be ing used , a roof rac k sho uld be re­
moved to decrease the w ind resis tance of the ve ­
hicle . This will save you approximately
12% fu el
at speeds from
62 -75 mph (100 -120 km/h) .
Save energy
The eng ine d rives the generator, which generates
electric ity; the fuel consumpt io n also increases
wi th the dema nd for e lec tric ity . T he refore, sw itch
electrical eq uipment off when you no longer
need it . Examples of eq uipment that uses a lot of
energy are air blowers at a high setting, the rear
window defogger and seat heating* .
@ Note
Do not leave engine idling unattended after
starting. If warning lights sho uld come on to
i ndicate improper operation, they would go
unheeded. Extended idling also produces
heat, which could resu lt in overheating or
other damage to the veh icle or other proper ­
ty .
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:E ' (D Note
-Before the start of winter, have an author­
ized Audi dealer or author ized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate . Th is is especially important
when driving in co lder climates.
- If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the en­
gine. If this happens, only use wa te r and re­
store the co rrect mixture ratio with the
spec ified coo lan t additive as soon as possi­
ble .
- Only refill with new coo lant.
- Radiator sealant must no t be mixed with
the coo lant.
Adding coolant
Fig . 26 5 Eng ine compartme nt: release button on coolant
expansion tank
Observe the safety precautions ¢ page 319,
Working in the engine compartment .
Checking the engine coolant level
.,. Park the vehicle on a level surface .
.,. Swi tch the ign ition off.
... Read the coolant leve l on the coo lant expansion
tank¢
fig . 265.
... The coolant level must be between the MIN and
MAX markings when the engine in cold. When
the engine is warm it can be slightly above the
MAX marking.
Adding coolant
Requirement: there must be a residual amount of
coo lant in the expans ion tank
¢ (D .
Chec king and Filling
.,. Let the engine cool down.
... Place a cloth over the coolant expansion tank
cap.
... Push the release button
¢fig. 265 and carefu l­
ly unscrew the cap to the left until you feel re­
sistance ¢.&, .
.,. Push the release button aga in and remove the
cap comple tely .
.,. Add coo lant m ixed in the cor rec t rat io
¢page 324 up to t he MAX mar king.
... Ma ke sure that t he f luid level remains stab le .
Add mo re coolant if necessary .
... Tu rn the cap to the right to secure it until you
fee l res istance a second time.
Coola nt loss usually in dicates there is a leak . Im­
mediate ly drive your vehicle to a n authorized
Audi dealer or authorized A udi Service Facility
and have the cooling system inspected.
If the
cooling system is not leaking, a loss can come
from the coolant boiling through overheat ing
and being pushed out of the cooling system .
A WARNING ,.__
-The cooling system is under pressure. Do
not open the coo lant ex pansion tan k cap
when t he engine is hot. This increases the
ris k of burns .
- Th e coolan t addi tive and the coolan t can be
dangerou s to yo ur he alt h . Fo r th is reason,
keep the coolant in the original cont ainer
an d away from children. There is a risk of
poisoning .
- When working in the engine compar tment,
remember that t he radiator fan can switch
on even if the ignition is switched off, which increases the risk of injury .
{U) Note
Do not add coolant if the expansion tank is
empty. There may be air in the cooling sys­
tem, which increases the risk of engine dam ­
age. If this is the case, do not cont inue driv­
i ng. See an authorized A udi dealer or author­
i zed Audi Service Facility for assistance .
-
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:E ' (D Note
-If the vehicle will be p arked for long periods
of time, protect it against t he cold so that it
will not be destroyed by "freezing"
¢ page 327.
- There are electrical components under the
cargo floor behind a trim pane l that warm
up du ring operat ion. To reduce the r isk of
the components overheat ing, do not store
ob jects s uch as blankets u nder the ca rgo
floor. If they overheat, the components will
swi tch off tempo rar ily. Thi s wi ll be indicated
by a message in the ins trumen t clus ter, un­
ti l the temperature returns to normal.
@,l For the sake of the environment
'8' B atteries cont ain poll uti ng substa nces s uch
a s s ulfu ric a cid and le ad. Contact an aut hor­
ize d Au di dealer or a uthorized Aud i Service
Facility for more info rmation.
Vehicle battery
The term "vehicle battery" refers to the 12 Volt
battery in your vehicle.
Not running the vehicle for long periods of
time
If yo u do not dr ive you r vehicle for seve ral days or
weeks, e lectrical equipment is gradually sca led
back or switched off. This reduces ene rgy use and
ensu res the veh icle w ill be able to start after long
pe riods of time¢
page 147. Some convenience
functions, suc h as inter ior light ing or power seat
adjustment, may not be available under certa in
circumstances. These convenience funct ions w ill
be ava ilable again once you switc h the ign ition on
and start the engine.
Even when electrical equ ipment is switched off,
the equ ipment can still d rain the vehicle battery
if the vehicle is not drive n for long per iods of
time. Deep d rain ing results in a chemical reaction
that des troys the inside of the vehicle b attery.
The vehicle batte ry must be charged every mont h
to reduce the risk of this happening ¢
page 327.
Contact an author ized Audi dealer or authorized
Aud i Service Facility for more information.
Chec king and Filling
Winter operation
Co ld wea ther places higher dem ands on the vehi­
cl e battery . This res ults in reduced s tarting ab ili­
ty. Have the vehicle battery checked by an au ­
t h orized Audi dea le r or authorized Audi Service
Facility before the cold time of year.
Charging the vehicle battery
Fi g. 2 67 En g in e compar tmen t: co nnecto rs fo r a c harger
and j ump start cab les
Requireme nt: only use chargers with a ma ximum
charging voltage of 30 amp s/14 .8 Volts .
The
vehicle battery cab les remain connec ted .
.,. Read the warnings ¢
A in General warnings
about batteries on page 326
and ¢ &_ .
.,. Switch off the ignit ion and all electrical equ ip­
ment .
.,. Open the hood ¢
page 320.
.,. Open the red cover on the pos itive termina l
¢fig . 267.
.,. Clamp the charger terminal clamps to the jump
start pins
accord ing to the instructions. (pin
under the red cove r= "positive", pin with he x­
agona l head= "negat ive").
.,. Insert t he power cable for t he charging dev ice
into the socket and switch the device on .
.,. At the end of the charg ing p rocess, sw itch the
charger off and pull the power cable out of the
so cket.
.,. Remove the ch arger termin al cl amps.
.,. Close the red cover on the positive termina l.
.,. Close the hood
¢ page 320 .
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