Mercedes Benz

Engine Controls - EMS2K DME Programming Hints Service Measure Engine Electrical M12 200 03 07/29/2003 Subject Cooper, Cooper S: EMS2K Reprogramming Helpful Hints Complaint During EMS2K (DME) programming, the programming process is interrupted. Vehicle cannot be restarted, and EMS2K is not responding to DIS/GT1 interrogation. Cause Excessive voltage fluctuation during programming which de-energizes the main DME relay is the most likely cause. Measure Important: When programming use Deutronic battery charger (PN 99 00 0 003 944 available from Parts Department) set to the "Power Supply" mode. In the case that the DME programming interruption occurred: 1. Manually power-up the DME by jumping the main relay's (K6300) terminals 30 (power supply) and 87 (power output to DME). In order to do this, remove the main relay from its socket (DME relay is located in the fuse box, in engine compartment). Jump corresponding terminals in the relay connector (KL30 & KL87) with fused jum...