2004 MERCEDES-BENZ CLK CABRIOLET coolant temperature

314 Practical advice
Trouble
shoo ting Problem Possible cause Suggested solutions
D
The red coolant warning lamp
lights up wh ile the engine is
running. There is insufficient coolant in the reservoir. 6
Top up the coolant immediately, oth-
erwise the engine could ove rheat
(= page 247). If this warning lamp lights up frequently,
there is a leak in the cool
ing system. 6
Have the cooling system checked. If the coolant lev
elis correct, the radiator fan
may be faulty. 6
If the coolant temperature is below
12 5° C, you can drive on to the near-
est qualifie dspec ialist wor ksho p, e .g.
a Mercedes-Benz Servi ceCentre.
6 Avoid plac ing a heavy strai non the en-
gi ne (e.g. driving on mountain roads)
and stop /start driving. D
The red coolant warning lamp
lights up while you are dri ving
and you can hear an audible
warning. The coolant temperature has
exceeded
125 °C. 6
Stop as soon as possible and allow
the engine and the coolant to cool
down. 209en_d2.boo Seite
314 Dienstag, 25. Mai 2004 7:26 19

325
Practical advice
Tr ou bleshooting Problem Possible caus
e/consequ ence Suggested sol
utions The coolant temperature gauge is above
+130 °C. The coolant warning lamp may
also be
lit and a warning signal may sound
( = pag e107). The coolant
level is too low. The coolant is
too hot and the engine is no longer being
cooled sufficiently. 6
Stop as soon as possible and allow the
engine and the coolant to cool down.
6 Check the coolant level, while observing
the warn ings, and top up the coolant if
nec essary (
=page 247). If the coolant
level is correct, the radiator
fan may be faulty. The coolant is too hot
and the engine is no longer being coo led
sufficiently. 6
If the coolant temperature is below
130 °C ,you can drive on to the nearest
qual ified specialist workshop, e.g. a
Mercedes-Benz Serv ice Ce ntre.
6 When doing so, avoid placing a heavy
strain on the engine (e.g. driving on
mo untain roads) and stop /start driving. 209en_d2.boo Seite
325 Dienstag, 25. Mai 2004 7:26 19

415
Te
chnical data
Service products and capacities
The following values indicate the various
total cooling system capacities.
Co rrosion in hibitorand antifreeze
concentration for antifreeze protection down to –45 °C (55%)
The coolant is a mixture of water, corro-
sion inhibitor and antifreeze. It performs
the following functions in the coo
ling sys-
tem:
! Anti-corrosion protection
! Antifreeze protection
! Raising the boiling point !
Always use a suitable coolan t–even in
co untri eswith high temperature s.
If you do not do so, the cooling system will not be
suffici ently protected from corrosion, and the
boiling point wil lbe too low. If antifreeze
/corrosion inhibitor is present
in the correct concentration, the boiling
point of the coolant will be around 130 °C. Coolant
CLK 200
KOMPR ESSOR CLK 200
CGI CLK 240 CLK 320 CLK 500 CLK 55
AMG CLK 270
CDI Coolant with manual
transmission 8 l 8 l 10 l – – – 12.4 l
Coolant
withautomatic
transmission* 8 l 8 l 10 l 10 l 12 l 12 l 12.4 l
CLK 200
KOMPRESSOR CLK 200
CGI CLK 240 CLK 320 CLK 500 CLK 55
AMG CLK 270
CDI with manual transmission 3.6 l 3.6 l 4.5 l – – – 5.
6 l wi
th automatic transmission* 3.6 l 3.6 l 4.5 l 4.5 l 5.
4 l 5.4 l 5.
6 l 209en_d2.boo Seite
415 Dienstag, 25. Mai 2004 7:26 19