2015 AUDI RS7 SPORTBACK radiator cap

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Instrument s and warnin g/indic ator ligh ts 15
immediately at low speed to the nearest
authorized Audi dealer or qualified repair
facility and have the brake system in­
spected .
- Always keep in m ind that after several
brake applicat ions, you will need greater
pressure on the brake pedal to stop your
vehicle . Do not rely on stra ined brakes to
respond w ith maximum stopp ing power
in critical situations. You must allow for
increased bra king distances . The extra
distance used up by fading brakes could
lead to an accident .
PARK!<®> Electromechanical parking brake
The warning/indicator light monitors the
electromechanical parking brake.
If the indicator light . (USA models)/ .
(Canada models) tu rns on, the par king b rake
was set .
• (USA mod els ) ~ (C anada mode ls) Cau­
tion: V ehicle pa rk e d too stee p
If the indicator lig ht blinks and the message
appears, there is not enough braking power to
keep the vehicle from rolling. The brakes have
overheated . The vehicle could ro ll away even
on a small in cl ine.
Pr ess brake pedal to rel eas e parking brake
To release the parking brake, press the brake
pedal and press the button ~ or start driving
with s tart ing ass ist at the same t ime
c::> page 78.
Please release parking brake
To release the parking brake man ually, press
the brake pedal and press the button~ at the
same time. The parking brake on ly re leases
automatically if the driver's safety be lt is fas­
tened.
Ill Parkin g brake!
If the Ill indica tor l igh t turns on and this
message appea rs, there is a p arking brake
mal function . Drive to your authorized Audi dealer or qualified workshop immediately to
have the malfunction corrected
.
_L Engine cooling system malfunction
A malfunction in the engine cooling system
must be repaired as soon as possible .
• Swit ch off en gin e and check coolant l evel
If the indicato r light turns on and the mes­
sage appea rs, the coolant temperature is too
high or the coolant leve l is too low.
.,. Pull off the road .
.,. Stop the vehicle .
.,. Turn off the engine .
.,. Check coolant level
c::> page 217 .
.,. Add coo lant if necessary c::> page 218.
.,. Con tinue dr iv ing on ly afte r the engine cool ­
ant warning/indicator ligh t goes out .
.,. Contact yo ur authorized Audi dealer for as-
sistance if necessary.
If the engine coo lant level is correct, t hen the
radiator fan may be the ca use of the malfunc­
tion .
• Coola nt temperature t oo high! Plea se let
engine run with vehicle stationary
If the indicator light turns on and the mes­
sage appea rs, let the engi ne run at idle for a
f ew m in utes to cool down.
A WARNING
- If you r vehicle should brea k down for
mechanical or other reasons, park at a
safe distance from moving traffic, turn
off the eng ine and turn on the hazard
warn ing lights
c::> page 45, Emergency
flasher.
-
- Never open the hood if you see or hear
steam or coolant escaping from the en­
gine compartment -you risk being scald­
ed . Wait unt il you can no longer see o r
hea r steam o r coolant escap ing .
- The engine compartment of any vehicle is a dangerous area . Before you perform
any wo rk in the engine compartment,
~

218 Check ing and filling
fig . 188. With a cold engine, the coo lant
l evel should be between the "min" and
"max" markings . When the engine is warm ,
the leve l may be slightly above the "max"
mark ing .
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration
9 page 213.
To obtain an accurate reading, the engine
must be switched off .
The expans ion tank in you r vehicle is equipped
with an e lectric coolant level sensor.
When the coolant level is too low, the warning l ight in the Auto-Check System
9 page 15 w ill
illum inate unti l you add coolant and the level
has been restored to normal. Even though
there is an electric coolant level senso r, we
still recommend you check the coolant leve l
from time to time .
Coolant loss
Coolant loss may indicate a le ak in the cooling
system . In the event of coolant loss, the cool ­
ing system should be inspected immediately
by your authorized Audi dealer. It is not
enough merely to add coolant.
I n a
s ealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheating.
A WARNING
The cooling system is under pressure and can get very hot. Reduce the risk of scald­
ing from hot coolant by followi ng these
steps .
- Turn off the engine and allow it to coo l
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 carefu lly in
a counter-clockwise direction w hile ap­
plying light, downward pressure on the
top of the cap . -
To avoid being burned, do not spi ll anti­
freeze or coolant on the exha ust system
or hot engine parts. Under certain cond i­
tions, the ethylene glycol in engine coo l­
a nt can catch fire.
(D Note
Do not add any type of radiator leak sea l­
ant to your veh icle's engine coolant. Add­
i ng radiator repair fluid may adverse ly af­
fect the funct ion and pe rformance of you r
cooling system and could result in damage
not cove red by your New Veh icle Limited
War ran ty.
Adding coolant
Be very careful when adding engine coolant.
Befo re you check anyth ing in the eng ine com­
partment,
always read and he ed all WARN­
INGS ¢ ..&. in Working in the engine compart­
ment on page
211.
" Requirement: There must be a residua l
amo unt of coolant in the expansion ta nk
¢ (D .
"Tu rn off the engi ne.
" Le t the eng ine cool down.
" Place a thick rag over the coolant expansion
t ank
9 page 217, fig. 191 and ca refully
twist the cap counter-clockwise ¢&,, .
" Add coolant m ixed in the correct rat io
¢
page 217, Coolant up to the MAX mark­
ing.
" Make sure that the flu id leve l remains sta -
ble . Add more coo la nt if necessary .
" Twist the cap o n again
tightly .
Replacement engine coo lant must conform to
exact spec ificat ions ¢
page 217, Coolant.
We recommend using only coolant add i-
tive
Gl2++, Gl3 or in an emergency Gl2 +. Do
not use a d ifferent addit ive . In an emergency
use p la in water until you can get the correct
additive and can resto re the co rrect rat io . This
shou ld be done as soon as possib le. .,..

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If you have lost a consi derable amount of
coolant, then you should add co ld antifreeze
and cold water only when the engine is co ld .
Always use
new engine coolant when refi lling.
D o not fi ll coolant above the "MAX " mark . Ex­
cess coolant will be forced out th rough the
p ress ure rel ief valve in the cap when the en­
g ine becomes hot .
A WARNING ,_________
-The cooling system is under press ure and
can get very hot . Reduce the risk of
sca ld ing from hot coo lant by following
these steps.
- Tur n
off the eng ine and a llow itto cool
down.
- Protect your face, hands and arms from
escap ing f lu id a nd steam by cover ing
the cap wi th a la rge, thick rag.
- Turn the cap slow ly and very ca refully
in a cou nte r-clockw ise d irect ion while
a pply ing ligh t, downw ard p ress ure on
the to p of the cap.
- To avo id being burned, do no t sp ill an­
tifreeze or coolan t on t he exhaust sys­
tem or ho t engine parts . U nder certa in
conditions, the ethylene glyco l in en­
gine coolant can catc h fire .
- Antifreeze is poisonous . Always store an ­
tifreeze in its original container and we ll
o ut o f the reach of children.
- If you drain the coolant , it must be
caught and safely stored in a proper con­
tainer clearly marked "poison".
@ Note
- Do not add coolant if the expansion tank
i s empty . Ai r could enter the cooling sys­
tem and damage the engine. If this is
the case, do not continue driving. Seek professional assistance.
- Coolant po llutes the env ironment and
could cause a n engine fire. Excess coo l­
ant wi ll be forced out through the pres­
sure re lief valve in the cap when the en ­
gine becomes hot.
Checkin g and fillin g 219
-If, in an emergency, on ly wate r can be
added, the correct ratio between water
and antifreeze ¢
page 217 must be re­
stored as soon as possible.
@) For the sake of the environment
Drained coolant sho uld not be reused. A l­
ways d ispose of used coolant while observ­
i ng a ll environmental regulations.
, Radiator fan
The radiator fan switches on automatically by
itself .
An auxiliary electric radiato r fan switches on
and
off depending on coolant temperature
and othe r vehicle ope rat ing cond it ions.
After yo u switch the eng ine o ff, the aux iliary
f an can continue running for up to 10 m inutes
- even with the ignition off. It can even switch
on aga in later by itself¢ .&. , if
- the temperatu re of the engine coo lant rises
du e to the h eat build -up from th e engin e in
the engine compa rtment, or
- the engine compa rtment heats up because
the vehicle is parked in intense sunlig ht.
A WARNING ~
- To reduce the risk of persona l inju ry nev-
er touch the radiator fan .
- The a uxiliary electric fan is tempe rat ure
contro lled and can switch on suddenly
even when the engine is not running.
- The a uxiliary radiator fan sw itches on a u­
tomatically when the engine coo lant
reaches a certai n temperature and will
continue to ru n until the coo lant temper­
ature drops. •
•