Resetting & Reactivating Engine Control Module Memory
WARNING: This page is about a different car, the 1996 Mercedes-Benz C220, 1995 Mercedes-Benz C220, and 1994 Mercedes-Benz C220. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Control modules manufactured by Bosch up to 8/93, the start button must be pressed 5-6 seconds to clear the DTC memory and 8-9 seconds to reset and reactivate the engine control module memory.
- Clear diagnostic trouble code (DTC) memory. See .
- After the number "1" appears, press the start button for 6-8 seconds.
- Switch ignition OFF and wait minimum of 2 seconds.
- Turn ignition ON, wait a minimum of 10 seconds and then start engine.