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September 16, 2025 Service bulletin

Complaint After a software update from campaign 2025050001 of component LIB48_222

Mercedes-Benz technical service bulletin LI54.10-P-079772 for 2020-2025 Mercedes-Benz E350, 2020-2022 Mercedes-Benz GLC 300 and 2020-2024 Mercedes-Benz GLE 350 and others.

Bulletin number
LI54.10-P-079772
Component
Electrical system
Summary
Complaint After a software update from campaign 2025050001 of component LIB48_222 - G1/3 (48 V on-board electrical system battery) from software release A 000 902 50 48 to software release A 000 902 15 89, the fault code B183319 may be output. B183319 "The battery for the 48V on-board electrical system has a malfunction. The limit value for current has been exceeded" Cause Anomaly in the software update Remedy Please perform the following steps in the specified sequence: 1.) Delete fault codes 2.) Disconnect XENTRY Diagnosis and the 12 V battery charger 3.) Disconnect ground cable from the 12 V battery 4.) Ensure bus idle for at least 10 minutes 5.) Re-connect ground cable to the 12 V battery 6.) Delete fault codes again 7.) Perform a test drive 8.) Check fault codes > If fault code B183319 is still current, continue with the guided fault analysis in XENTRY Diagnosis. > If fault code B183319 goes to stored and can be cleared, no further action is required.

Owners of these vehicles have filed 196 complaints in the electrical category.

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