Operation Manual

Problems with the engine
Problem
Possible causes/consequences and M Solutions
The engine does not
start. The starter motor
can be heard.
R
There is a malfunction in the engine electronics.
R
There is a malfunction in the fuel supply.
Before attempting to start the engine again:
X
Turn the SmartKey back to position 0 in the ignition lock.
or
X
Press the Start/Stop button repeatedly until all indicator lamps in
the instrument cluster go out.
X
Try to start the engine again (Y page 164). Avoid excessively long
and frequent attempts to start the engine as these will drain the
battery.
If the engine does not start after several attempts:
X
Consult a qualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor.
The on-board voltage is too low because the battery is too weak or
discharged.
X
Jump-start the vehicle (Y page 376).
If the engine does not start despite attempts to jump-start it:
X
Consult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
X
Try to start the engine again.
If the engine still does not start:
X
Consult a qualified specialist workshop.
The engine is not running
smoothly and is misfir-
ing.
There is a malfunction in the engine electronics or in a mechanical
component of the engine management system.
X
Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
X
Have the cause rectified immediately at a qualified specialist work-
shop.
The coolant temperature
gauge shows a value
above 248 ‡ (120 †).
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 356). Observe the warning notes
as you do so and add coolant if necessary.
Driving
169
Driving and parking
Z