Problems with the engine
Problem | Possible causes/consequences and ![]() |
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. ![]() ![]() 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.![]() If the engine does not start despite attempts to jump-start it: ![]() |
The starter motor was exposed to a thermal load that was too high.![]() ![]() If the engine still does not start: ![]() |
|
Vehicles with a gasoline engine: 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.![]() ![]() 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.![]() ![]() |
See also:
MOExtended tires (tires with run-flat
properties)
MOExtended tires (tires with run-flat
properties) allow you to continue driving your
vehicle even if one or more tires are entirely
deflated.
MOExtended tires may be used only in
conjunction ...
SmartKey battery
Important safety notes
It is advisable to have batteries replaced at a
qualified specialist workshop, e.g. at an
authorized Mercedes-Benz Center.
WARNING
Batteries contain toxic and c ...
EXTERIOR
From the outside, the CLS550 is a knockout. I lost count of how many times
the word "stunning" was used when people saw my family and I pull up in it.
Called a "four-door coupe,&quo ...