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August 14, 2024 Service bulletin

Once the head unit A26/17 is updated to the FUP4 software release E445.0, it may be the case that online...

Mercedes-Benz technical service bulletin LI82.85-P-077242 for 2022-2024 Mercedes-Benz C300, 2023-2024 Mercedes-Benz GLC 300 and 2020-2024 Mercedes-Benz CLA250 and others.

Bulletin number
LI82.85-P-077242
Component
Electrical system
Summary
Complaint Once the head unit A26/17 is updated to the FUP4 software release E445.0, it may be the case that online connectivity is no longer available Cause E445.0 FUP4 software release Remedy Update the A26/17 - MBUX multimedia system (Head unit) software to E445.2 FUP4 Optimized or newer version to resolve the complaint.

Owners of these vehicles have filed 370 complaints in the electrical category.

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