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December 12, 2022 Service bulletin

This LI does Not apply to 223 or 206 which use a different generation of 48V systems

Mercedes-Benz technical service bulletin LI54.10-P-069698 for 2020-2021 Mercedes-Benz GLS 450, 2020-2022 Mercedes-Benz GLE 450 and 2020-2023 Mercedes-Benz E 450 and others.

Bulletin number
LI54.10-P-069698
Component
Electrical system
Summary
Complaint This LI does Not apply to 223 or 206 which use a different generation of 48V systems. Please follow the relevant guided tests for the 223 and 206. For 223 with fault code B1FCB97 follow LI54.10-P-073164. Various causes are possible. The faults listed in the various causes do not all have to be present at all times. Some of these complaints may overlap. Rely on the faults listed in the Cause section for identifying the correct Remedy. 1. No start 2. Yellow or red instrument cluster message for 48 V on-board electrical system battery (G1/3) 3. Limp home mode, overheating, A/C not blowing cold, or loss of acceleration 4. Check Engine Light Cause Cause 1: Software causes Intermittent No Starts with fault B183387 in DC/DC converter N83/1 Cause 2: Software causes Permanent No Start with fault B183349. May also have fault B183371. Cause 3: Hardware short circuit in 48V system causes fault B183319 in 48V battery. May also have fault B183371. Cause 4: Internal 48V battery Peltier cooling element failure causes fault B183397

Owners of these vehicles have filed 97 complaints in the electrical category.

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