Troubleshooting
Engine problems
G
WARNING
If maintenance work is carried out incorrectly, the operating safety of your vehicle may be affec-
ted. You could lose control of the vehicle and cause an accident. The safety systems may also
no longer be able to protect you or others as they are designed to.
Always
have
service work carried out at a qualified specialist workshop. The qualified specialist
workshop must have the specialist skills and tools necessary to carry out the work. Mercedes-
Benz recommends that you use a Mercedes-Benz or MTU Service Centre for this purpose. In
particular, work relevant to safety or on safety-related systems must be carried out at a qualified
specialist workshop.
Apart from careful operation and maintenance of the engine it is also important that malfunc-
tions be rectified in good time. You can rectify certain faults yourself.
Have malfunctions that you cannot eliminate yourself rectified at a qualified specialist work-
shop. Mercedes-Benz recommends that you use a Mercedes-Benz or MTU Service Centre for
this purpose (Y page 11).
Problem Possible causes/consequences and M Solutions
Drive pinion does not
turn
or
turns too slowly.
Battery is not sufficiently charged.
X
Charge the battery.
Connecting cable to the starter motor is loose.
X
Tighten the cable on the terminal. If necessary, solder on a new
terminal.
Starter motor solenoid switch is faulty or starter motor is faulty.
X
Have it checked at a qualified specialist workshop.
Engine does not start or
stalls again immedi-
ately.
Fuel tank is empty.
X
Refill the fuel tank (Y page 41).
Fuel filter is blocked.
X
Replace the filter element (Y page 69).
The fuel prefilter contains water.
X
Drain the fuel prefilter (Y page 68).
Fuel prefilter is blocked.
X
Replace the filter element (Y page 68).
Fuel system or filter is leaking.
X
Replace the seals.
Troubleshooting
89
Breakdown assistance
Z
To Next Page
Loading...
Need help?
General
