Message in instrument cluster: "Active Brake Assist
Mercedes-Benz technical service bulletin LI54.70-P-072678 for 2021 Mercedes-Benz AMG GT53, 2021 Mercedes-Benz AMG GT43 and 2021 Mercedes-Benz AMG GT63 and others.
- Bulletin number
- LI54.70-P-072678
- Component
- Service brakes
- Summary
- Message in instrument cluster: "Active Brake Assist - limited function - Update software of ABA control unit (B92/20).
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