Mercedes-Benz 2003 SLK 230 Kompressor Operator's Manual page 201

Problem
The fuel reserve and fuel cap placement
warning lamp:
lights up while driving
blinks
B The yellow low engine coolant
level warning lamp remains lit af-
ter starting the engine or lights
up while driving.
Warning!
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You can be seriously burned.
Possible cause
The fuel level has gone below the reserve
mark.
The fuel cap is not closed tight.
A fuel system leak has been detected.
The coolant level is too low.
!
G
Do not ignore the low engine coolant
level warning light. Extended driving
with the light illuminated may cause
serious engine damage not covered by
the Mercedes-Benz Limited Warranty.
Practical hints
What to do if ...?
Suggested solution
Refuel at the next gas station
( page 169).
Check the fuel cap.
Have the fuel system checked as soon
as possible by an authorized
Mercedes-Benz Center
Add coolant ( page 176).
If you have to add coolant frequently,
have the cooling system checked by
an authorized Mercedes-Benz Center.
Do not drive without sufficient amount
of coolant in the cooling system. The
engine will overheat, causing major
engine damage.
201