MERCEDES-BENZ

LI09.00-P-074794

2022-05-03 · NHTSA 10213044

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

Complaint Customer reports a warning message in red in the instrument cluster: "Water fording not possible! Service required". The message is no longer active following an ignition cycle. Cause As a result of an absent or aborted reference run of the air flaps of the N127 'drivetrain' control unit (PTCU), the fault codes P153001 and P153101 are stored in the fault memory and the "Water fording not possible" warning message appears in the instrument cluster. The flap system nevertheless functions correctly. Note: The fault codes must be the only ones stored in the fault memory. Additional entries in the fault memory that concern the intake air flap system could indicate a mechanical fault in the system Remedy 1. Perform software update of the N127 'powertrain' control unit (PTCU) (XENTRY data status 12/2021 or more recent)

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.