2003 Mercedes E-Class Owner's Manual - Page 293

Practical hints What to do if ... Problem Possible cause The yellow "CHECK ENGINE" malfunction indicator lamp comes on while driving. There is a malfunction in: The fuel injection system The ignition system The exhaust system The fuel system Such malfunctions may result in excessive emissions values and may switch the engine to its limp-home (emergency operation) mode. Your gas tank is empty. Suggested solution Have the vehicle checked as soon as possible by an authorized Mercedes-Benz 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. 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. ? < W The red seat belt warning lamp blinks for a brief period after starting the engine. The yellow fuel tank reserve warning lamp lights up while driving. The warning lamp reminds you to fasten seat belts. The fuel level has gone below the reserve mark. Gas cap not closed tight. Fasten your seat belt. Refuel at the next gas station ( page 259). Close gas cap 293