Mercedes-Benz 2010 GLK-Class Operator's Manual page 298

What to do if ...
296
Problem
? The red coolant
temperature
warning lamp
comes on when
the engine is
running and an
acoustic
warning sounds.
G
Warning!
Driving when your engine is overheated can
cause some fluids which may have leaked into
the engine compartment to catch fire. You
could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Tires
Problem
h Combination
low tire pressure
telltale/TPMS
malfunction
telltale for the
Advanced TPMS
illuminates
continuously.
h Combination
low tire pressure
telltale/TPMS
malfunction
telltale for the
Advanced TPMS
flashes 60
seconds and
then stays
illuminated.
Possible causes/consequences and M Solutions
The coolant temperature has exceeded 248‡ (120†).
X
Stop in a safe location as soon as possible and allow the engine
and coolant to cool down.
Possible causes/consequences and M Solutions
The Advanced TPMS detects a loss of pressure in at least one tire.
X
Carefully bring the vehicle to a halt, avoiding abrupt steering and
braking maneuvers. Observe the traffic situation around you.
X
Read and observe messages in the multifunction display
( Y page 262).
If the tire inflation pressure in the respective tire(s) has (have) been
corrected, the combination low tire pressure/TPMS malfunction
telltale goes out after a few minutes of driving.
There is a malfunction in the Advanced TPMS.
X
Read and observe messages in the multifunction display
( Y page 262).
X
Have the Advanced TPMS checked at an authorized Mercedes-
Benz Center.
After the malfunction has been remedied, the combination low tire
pressure/TPMS malfunction telltale goes out after a few minutes
of driving.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until
the engine has cooled down.
! The engine should not be operated with
the coolant temperature above 248‡
(120†). Doing so may cause serious
damage which is not covered by the
Mercedes-Benz Limited Warranty.