2003 Mercedes ML-Class Owner's Manual - Page 232

2003 Mercedes ML-Class Manual

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Practical hints What to do if ... Problem Possible cause The yellow "CHECK ENGINE" malfunction indicator lamp comes on while driving. There is a malfunction of: The fuel management system The ignition system The emission control system Systems which affect emissions Such malfunctions may result in excessive emissions values and may switch the engine to its limp-home (emergency operation) mode. The fuel cap is not closed tightly. Your fuel tank is empty. Suggested solution Have the vehicle checked as soon as possible by an authorized Mercedes-Benz Light Truck Center. An on-board diagnostic connector is used by the service station to link the vehicle to the shop diagnostics system. It allows the accurate identification of system malfunctions through the readout of diagnostic trouble codes. It is located in the front left area of the footwell next to the parking brake pedal. Check the fuel cap ( page 200). After refuelling start the engine three or four times in succession. The limp-home mode is canceled. You do not need to have your vehicle checked. ? 7 The indicator lamp lights up. A BabySmartTM child seat is installed on the front passenger seat. The front passenger airbag is therefore switched off. The system is malfunctioning when there is no BabySmartTM child seat installed on the front passenger seat. Have the system checked as soon as possible by an authorized Mercedes-Benz Light Truck Center. 232

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232
Practical hints
What to do if …
Problem
Possible cause
Suggested solution
?
The yellow “CHECK ENGINE”
malfunction indicator lamp
comes on while driving.
There is a malfunction of:
°
The fuel management system
°
The ignition system
°
The emission control system
°
Systems which affect emissions
Such malfunctions may result in excessive
emissions values and may switch the engine
to its limp-home (emergency operation)
mode.
±
Have the vehicle checked as soon as
possible by an authorized
Mercedes-Benz Light Truck Center.
An on-board diagnostic connector is
used by the service station to link the
vehicle to the shop diagnostics sys-
tem. It allows the accurate identifica-
tion of system malfunctions through
the readout of diagnostic trouble
codes. It is located in the front left
area of the footwell next to the park-
ing brake pedal.
The fuel cap is not closed tightly.
Check the fuel cap (
²
page 200).
Your fuel tank is empty.
±
After refuelling start the engine three
or four times in succession.
The limp-home mode is canceled. You do
not need to have your vehicle checked.
7
The indicator lamp lights up.
A BabySmart
TM
child seat is installed on the
front passenger seat. The front passenger
airbag is therefore switched off.
The system is malfunctioning when there is
no BabySmart
TM
child seat installed on the
front passenger seat.
±
Have the system checked as soon as
possible by an authorized
Mercedes-Benz Light Truck Center.