Problems with the engine
Problem | Possible causes/consequences and Solutions |
The engine does not start. The starter motor can be heard. | - There is a malfunction in the engine electronics. - There is a malfunction in the fuel supply. - Try to start the engine again. 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: |
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. - Jump-start the vehicle. If the engine does not start despite attempts to jump-start it: - Consult a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center. |
The starter motor was exposed to a thermal load that was too high. - Allow the starter motor to cool down for approximately two minutes. - Try to start the engine again. If the engine still does not start: - Consult a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center. |
|
The engine is not running smoothly and is misfiring. | There is a malfunction in the engine electronics or a mechanical
component of the engine management system. - Only depress the accelerator pedal slightly. - Have the cause rectified immediately at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center. Otherwise, non-combusted fuel may get into the catalytic converter and damage it. |
The coolant temperature gauge shows a value above 248 °F (120 °C). | 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 to cool down. - Check the coolant level. Observe the warning notes as you do so and add coolant if necessary. |
See also:
Emergency braking
The vehicle can also be braked during an
emergency using the electric parking brake.
– While driving, push handle 1 of the electric
parking brake.
The vehicle is braked as long as you keep ...
General information
WARNING
All categories of messages contain important information which should be taken
note of and,
where a malfunction is indicated, addressed as soon as possible at an authorized
M ...
Unlocking the driver's door (mechanical key)
If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be trigg ...