23 8 Ch e ck ing and filling
• Let the engine coo l down .
• Place a thick rag over the coolant expansion
tank
¢ page 237, fig. 204 and carefully
twist the cap counter-clockwise¢ _&..
• Add coolant mixed in the correct ratio
¢
page 236, Coolant up to the MAX mark-
ing.
• Make sure that the fluid level rema ins sta-
ble. Add more coolant if necessary.
• Twist the cap on again
tightly.
Replacement engine coolant must conform to
exact specifications ¢
page 236, Coolant .
We recommend using only coolant additive
G12++, G13 or in an emergency G12+ . Do not
use a different additive . In an emergency use
pla in water unt il you can get the correct add i-
tive and can restore the correct ratio. This
should be done as soon as possible .
If you have lost a considerable amount of
coolant, then you should add cold antifreeze
and cold water only when the engine is cold.
Always use
new eng ine coolant when refilling .
Do not fill coolant above the "MAX" mark. Ex-
cess coolant will be forced out through the
pressure relief valve in the cap when the en-
gine becomes hot .
A WARNING
- The coo ling system is under pressure and
can get very hot. Reduce the risk of
scalding from hot coolant by following
these steps.
-Turn off the eng ine and a llow it to cool
down.
- Protect your face, hands and arms from
escaping flu id and steam by cover ing
the cap with a large, thick rag.
- Turn the cap slowly and very carefully
in a counter-clockwise d irect ion while
apply ing light, downward pressure on
the top of the cap.
- To avoid being burned, do not sp ill an-
tifreeze or coolant on the exhaust sys-
tem or hot engine parts . Under certa in
cond it ions, the ethylene glycol in en-
gine coolant can catch fire.
- Antifreeze is poisonous . Always store an-
tifreeze in its origina l container and well
out of the reach of children.
- If you dra in the coo lant, it must be
caught and safely stored in a proper con-
tainer clearly marked "po ison".
@ Note
- Do not add coolant if the expansion tank
is empty. Air could enter the cooling sys-
tem and damage the engine. If this is
the case, do not cont inue driving. Seek
professional assistance .
- Coolant pollutes the environment and
cou ld cause an engine f ire. Excess cool-
ant will be forced out through the pres-
sure relief valve in the cap when the en-
gine becomes hot.
- If, in an eme rgency, only wate r can be
added, the correct ratio between water
and antifreeze ¢
page 236 must be re-
sto red as soon as possible.
@ For the sake of the environment
Drained coolant should not be reused . Al-
ways dispose of used coolant while observ-
ing all envi ronmental regula t ions.
Radiator fan
The radiator fan switches on automatically by
itself
The rad iator fan is driven by the e ngine via the
V-belt. The viscous clutch regulates the speed
of the fan acco rding to the temperatu re of the
coolant.
An auxiliary electric radiato r fan* sw itches on
and off depending on coolant temperature
and ot her vehicle ope rat ing condit ions .
After you switch the eng ine off, the aux iliary
fan can continue running for up to 10 minutes
- even with the ignition off.
It can even switch
on aga in later by itself ¢ .&, if 1111>
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