Problem
Possible causes/consequences and
M
Solutions
Vehicles with a petrol
engine:
The engine is not run-
ning smoothly and is
misfiring.
There is a malfunction in the engine electronics or a mechanical
component of the engine management system.
X
Only depress the accelerator pedal slightly.
X
Have the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
The coolant tempera-
ture display is showing
more than 120 †. The
coolant warning lamp
may also be lit and a
warning tone may
sound. (
Y
page 192).
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 261). 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
If the coolant temperature is less than 120 †, you can continue
driving to the nearest qualified specialist workshop.
X
Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving.
Manual transmission
Gear lever
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
in good time. This uses the engine's braking
effect. This relieves the load on the brake
system and prevents the brakes from over-
heating and wearing too quickly.
Neutral N when the ECO start/stop
function is active
In neutral N, the engine is switched off when
the vehicle speed is below a certain threshold
and the clutch pedal is not depressed.
Manual transmission
141
Driving
and
pa
rk
ing
BA 207 ECE ÄJ 2010/1a; 1; 2, en-GB
mkalafa
Version: 3.0.2.11
2010-01-26T13:03:22+01:00 - Seite 141
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Summary of Contents for E-Class 2010
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