2002 Mercedes S-Class Owner's Manual - Page 306

may still drive the vehicle, however, in all cases, we recommend that you have the system checked at your authorized Mercedes-Benz Center as soon as possible. If the "CHECK ENGINE" lamp comes on continuously and/or the vehicle is not driving normally (e.g. malfunction of the fuel management system or running out of fuel), serious damage can occur to the emission system. Please contact your authorized Mercedes-Benz Center immediately. The Sequential Multiport Fuel Injection (SFI) control module monitors emission control components that either provide input signals to or receive output signals from the control module. Malfunctions resulting from interruptions or failure of any of these components are indicated by the "CHECK ENGINE" malfunction indicator lamp in the instrument cluster and are simultaneously stored in the SFI control module. If the "CHECK ENGINE" malfunction indicator lamp comes on, have the system checked at your authorized Mercedes-Benz Center as soon as possible. With some exceptions, the control module switches off the "CHECK ENGINE" malfunction indicator lamp if the condition, causing the lamp to come on, no longer exists during three consecutive cycles. Malfunction and indicator lamps Instruments and controls Operation Driving 303 Instrument cluster display An on-board diagnostic connector is located in the passenger compartment near to the parking brake pedal, allowing the accurate identification of system malfunctions through the readout of diagnostic trouble codes. Notes: When running out of fuel, the "CHECK ENGINE" malfunction indicator lamp comes on and the engine possibly switches to its limp-home (emergency operation) mode. To cancel the limp-home mode, the engine may have to be started three or four times after refueling. The malfunction indicator lamp remains illuminated. Have the system checked at your authorized Mercedes-Benz Center immediately. Practical hints Car care Technical data Index