MERCEDES-BENZ

LI54.71-P-080157

2026-02-27 · NHTSA 11029088

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 Driver assistance system warning messages in instrument cluster. MUST be in conjunction with a fault code in control unit N62/5 IDC (driver assistance systems): • B1D9198 (Stored) - The "Driver assistance system" control unit is malfunctioning. Overtemperature in the component or system. Under certain circumstances, additional fault codes may be present in N125 CDCC_EV (central controller for charging and driving). Cause Air in the low-temperature circuit Remedy 1. Do not replace any parts 2. Perform a leak test on the low-temperature circuit 3. Perform a visual check of the coolant connection on the N62/5 control unit 4. Perform the bleeding routine via XENTRY and WIS. 5. Check the coolant level and top up if necessary (see WIS references) If this does not remedy the problem, please open a TIPS case to Body/Chassis/Entertainment.

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.