Mercedes Workshop Code 606 Upd

Certain Mercedes modules enter a "coding session" when the ignition is turned on. If battery voltage drops below 11.5V during this session, the module aborts the write process, leaving corrupted or incomplete coding data.

Any discrepancy here is your root cause. Mercedes Workshop Code 606

: Scroll down to ASSYST PLUS and select Workshop Code or Service Data to see the 3-digit code. Service Importance and Costs Certain Mercedes modules enter a "coding session" when

Workshop Code 606 – What it actually means the module aborts the write process