Manual Transmission - Mercedes-Benz E-Class Coupe Owner's Manual

Problem
Vehicles with a petrol
engine:
The engine is not run-
ning smoothly and is
misfiring.
The coolant tempera-
ture display is showing
more than 120 †. The
coolant warning lamp
may also be lit and a
warning tone may
sound.

Manual transmission

Gear lever
Gear lever
! Only engage gear when the clutch pedal
is depressed.
! When shifting between 5th and 6th gear,
you should always push the gear lever all
Possible causes/consequences and M Solutions
There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
Only depress the accelerator pedal slightly.
X
Have the cause rectified immediately at a qualified specialist
X
workshop, e.g. a Mercedes-Benz Service Centre.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
Stop as soon as possible and allow the engine and the coolant
X
to cool down.
Check the coolant level (
X
notes as you do so and top up the coolant if necessary.
If the coolant level is correct, the engine radiator fan may be faulty.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
At coolant temperatures under 120 †, drive on to the nearest
X
qualified specialist workshop, e.g. to a Mercedes-Benz Service
Centre.
Avoid heavy loads on the engine as you do so, e.g. driving on
X
mountain roads and stop/start driving.
Manual transmission
page 283). Observe the warning
Y
the way to the right. Otherwise, you could
shift unintentionally into 3rd or 4th gear
and damage the transmission.
If you shift down at too high a speed (trans-
mission braking), this can cause the engine
to overrev, leading to engine damage.
Do not use the clutch bite point to keep the
vehicle stationary on uphill gradients.
There is otherwise a risk of damaging the
clutch.
! 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.
153
Z