Page 323 of 409
322 Practical hintsWhat to do if ...Left display
Right display
Possible cause/
consequence
Possible solution
;
(USA only)
3
(Canada only)
Brakes overheated
Drive on, but with
even greater care
The brake system is overheated
due to an excessive load on the
brakes.
Relieve the load on the brake system.
Drive more smoothly and think ahead to avoid
unnecessary braking.
When driving down steep grades, shift into a
lower gear to use the engine’s braking power
(page 170).
Cautiously continue driving so that the air
stream will cool down the brakes.
Release
parking brake
You are driving with the parking
brake set.
Release the parking brake (
page 50).
Service brake
Visit
workshop
There are malfunctions, but the
electrohydraulic brake system
is operating normally.
Visit an authorized Mercedes-Benz Center im-
mediately.
Page 324 of 409
323 Practical hints
What to do if ...
Left display
Right display
Possible cause/
consequence
Possible solution
B
Coolant
Check level
The coolant level is too low.
Add coolant (
page 250).
If you have to add coolant frequently, have the cooling
system checked by an authorized Mercedes-Benz Center
immediately.
Warning!
G
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.
!Do not ignore the low engine coolant
level warning. Extended driving with
the message and symbol displayed
may cause serious engine damage not
covered by the Mercedes-Benz Limited
Warranty.
Do not drive without sufficient amount
of coolant in the cooling system. The
engine will overheat causing major
engine damage.
Page 325 of 409

324 Practical hintsWhat to do if ...
During severe operating conditions and
stop-and-go city traffic, the coolant tem-
perature may rise close to 248°F (120°C).
Left display
Right display
Possible cause/
consequence
Possible solution
Ï
Coolant
Stop, put engine
off
The coolant is too hot.
Stop the vehicle in a safe location and turn off the en-
gine.
Only start the engine again after the message disap-
pears. You could otherwise damage the engine.
Warning!
G
Driving when your engine is badly over-
heated 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 and can occur just by opening
the hood. Stay away from the engine if you
see or hear steam coming from it.
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°F
(120°C). Doing so may cause serious
engine damage which is not covered by
the Mercedes-Benz Limited Warranty.