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April 21, 2025 Service bulletin

Complaint Instrument cluster message for rear turn signal lamp despite functioning rear lamp

Mercedes-Benz technical service bulletin LI82.10-P-079175 for 2020-2022 Mercedes-Benz E350, 2016-2022 Mercedes-Benz GLC 300 and 2020-2022 Mercedes-Benz GLE 350 and others.

Bulletin number
LI82.10-P-079175
Component
Exterior lighting
Summary
Complaint Instrument cluster message for rear turn signal lamp despite functioning rear lamp. Fault code in N10/8 - rear signal acquisition and actuation module in the quick test: B164B49 The rear right turn signal lamp has malfunctioned. There is an internal electrical fault. and/or B164A49 The rear left turn signal lamp has malfunctioned. There is an internal electrical fault. Cause Sensitive fault detection in N10/8 - rear signal acquisition and actuation module (BC_R) Remedy 1. Check rear lamp for failure of the individual LEDs In the event that an LED fails, the rear lamp must be replaced 2. Check the software release of the Rear SAM (BC_R) and update if necessary 3. Add AO code "o70" via VeDoc 4. Perform SCN coding of Rear SAM (BC_R). 5. If concern occurred on left, use damage code 82C20 73 6. If concern occurred on right, use damage code 82R20 73

Owners of these vehicles have filed 33 complaints in the lights category.

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