Problem Possible causes/consequences and M Solutions
The coolant tempera-
ture display is showing
more than 120 †. A
display message may
also appearinthe mul-
tifunction display and a
warning tone may
sound.
The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X
Check the coolant level (Y page 211). Observe the warning
notes as you do so and top up the coolant if necessary.
If the coolant level is correct, the radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled suffi-
ciently.
X
At coolant temperatures under 120 †, drive on to the nearest
qualified specialist workshop e.g. to a Mercedes-BenzService
Centre.
X
Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving.
Manual transmission
Five-speed manual transmission
Gear lever
Six-speed manual transmission
Gear lever
!
When shifting between 5th and 6th gear,
you should always push the gear lever all
the way to the right. Otherwise, you could
shift unintentionally into 3rd or 4th gear
and damage the transmission.
Do not exceed the maximum speed for the
individual gears.
Shifting down at too high a speed (trans-
mission braking) can cause the engine to
overrev, leading to engine damage.
!
On long and steep downhill gradients,
especially if the vehicle is laden or towing
a trailer, you must shift into gear 1, 2 or 3
116
Manual transmission
Driving and parking
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