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December 11, 2024 Service bulletin

Complaint Customer states CEL is on. Cause Quick test shows FC P0A7F00 The state of health limit of the...

Mercedes-Benz technical service bulletin LI54.10-P-077250 for 2024 Mercedes-Benz C300, 2016-2024 Mercedes-Benz GLC 300 and 2024 Mercedes-Benz AMG C43 and others.

Bulletin number
LI54.10-P-077250
Component
Electrical system
Summary
Complaint Customer states CEL is on. Cause Quick test shows FC P0A7F00 The state of health limit of the hybrid/high-voltage battery module has been reached. No drivability concerns occurred and vehicle drives as normal. Remedy Do not replace any parts!! 254: SW has been released. Ensure all Add-ons are installed. Update A66 with the latest SW A 000 903 51 75 MY24 206: SW has been released. Ensure all Add-ons are installed. Update A66 with the latest SW A 000 903 52 75 After SW has been updated, perform the following reset procedure: Step 1: Read the State of Health Resistance - (SOH-R) Step 2: If SOH-R 125%: Drive for a duration of 60 minutes to retrain the SOH-R value. Step 3: Read the State of Health Resistance - (SOH-R) If SOH-R 125%: Park vehicle in Workshop for >12 hours in warm ambient temperature >60F, afterwards drive for a duration of 60 minutes. Step 4: Read the State of Health Resistance - (SOH-R) If SOH-R 125%, open a TIPS case.

Owners of these vehicles have filed 143 complaints in the electrical category.

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