Deze onderging bij de Mercedes-dealer een software update van het motormanagement, waarna de ecu niet meer aanspreekbaar bleek te zijn. Ondanks verwoede pogingen van de betreffende monteur was er geen leven meer in te blazen. De enige oplossing was om een nieuwe ecu te bestellen. Helaas was dit type in backorder: levertijd onbekend.
Now our help was called in. First we received the loose ecu. After inspecting the software, we found that the eeprom part got corrupted during the update process. Since we have a large collection of backup files, a similar eeprom dump was virginized.

Virginizen met Abrites

Just to be sure, the corresponding flash memory was also programmed and yes: on the workbench, the ecu was approachable as usual and after checking, the immo was indeed virginized.
After returning the ecu to the dealer it was installed and reprogrammed with the xentry diagnostic system. Since the ecu was now virgin the xentry system sees the ecu as if it were a new one. Unfortunately, again after programming the ecu the same problem.

After brief discussion, it was decided to put the car on transport to Kerkrade.
First we flashed the ecu back to the way it left here.
Since we also have online access to Xentry with flash privileges, the first decision was to program the ecu as the dealer does, to see if it works here. But no, after flashing xentry whined that the ecu was in ' boot mode'. Now what?
Fortunately we have equipment that goes 'beyond dealer level'! After re-flashing the virgin software, we manually personalized and activated the DAS (Drive Authorization System), then used xentry online to perform only the SCN coding. After programming the injector codes and various adaptation values, the engine started again!
Apparently there is a bug in this software version on the Mercedes server, which always causes it to fail.

Het herprogrammeren van de ecu met Xentry