engine overheat AUDI Q7 2012 Owner´s Manual

Coolant loss
Coolant loss may indicate a leak in the cool ing
system . In the event of coolant loss, the cool ­
ing system should be inspected immediately
by your authorized Audi d ealer. It is not
enough merely to add coolant.
I n a
sea led 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 following 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 carefully in
a counter -clockwise direction wh ile ap ­
plying light, downward pressure on the
top of the cap .
- To avoid be ing burned, do not spill ant i­
freeze or coolant on the exhaust system
o r hot eng ine parts. Under certai n condi­
t ions, the ethy lene g lycol i n engine cool­
an t ca n ca tch fire.
(D Note
Do not add any type of rad iator leak seal­
ant to you r vehicle's eng ine coolant. Add­
ing radiator repair f luid may adversely af­
fec t the function and pe rformance of your
cooling system and could res ult in damage
not covered by your New Vehicle Limited
Warranty .
Adding coolant
Be very careful when adding engine coolant.
Before you check anything in the engi ne com­
partment ,
alwa ys read and heed all WARN ­
INGS c:> A in Working in the engine compart ­
ment on page 258 .
Checking and fillin g 267
.. Turn off the engine .
.. Let the engine coo l down .
.. Place a thick rag over the coo lant expansion
tank
c:> page 266 , fig . 233 and carefully
twis t the cap coun ter-clockwise c:> &, .
.. Add coo lant .
.. Twist the cap on aga in
tightly.
Rep lacemen t engine coolant must conform to
exact spec ificat ions
c:> page 265, Coolant . We
recommend us ing on ly coo lant additive G12+
+, G 13 or in an eme rgency G12 +. Do
not use a
different additive. In an emergency use pla in
water until you can ge t the co rrect addi tive
and can restore the correc t ratio. This sho uld
be done as soon as possible.
If you have lost a cons iderab le amount of
coolant , the n you sho uld add cold ant ifree ze
and cold wate r on ly when the engine is cold.
Always use
n ew engine coolant when refilling .
Do not f ill coolant above the "MAX" mark. Ex­
cess coola nt will be forced out through the
pressure relief valve in the cap when the en ­
gine becomes hot .
A WARNING
- The cooling system is under pressure and
can get ve ry hot. Reduce the risk of
scalding from hot coolan t by following
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 w ith a large, th ick rag .
- Turn the cap s lowly and very carefully
i n a counter-clockwise direction while
applying light, downward pressure on
the top of the cap.
- To avoid being burned, do not spill a n­
tifreeze o r coolant on the exhaust sys­
tem or hot engi ne pa rts. Under certain
c ond it ions, the ethy lene glycol in en­
gine coolant c an catch fire .
- Antifree ze is po isonous. Always s to re an­
tifree ze in its o rigina l container and well
ou t of the rea ch of child ren. .,.
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