Mercedes-Benz C-Coupe 2015 Owners Manual - Manual (Page 142)

Problems with the engine
Problem Possible causes/consequences and M 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.
X
Turn the SmartKey back to position 0 in the ignition lock before
attempting to start the engine again.
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 135). 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 294).
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
Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X
Consult a qualified specialist workshop.
140
Driving
Driving
and
parking