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Mercedes C-Class W206 1.5 MHEV 48V Battery Fault — Mercedes-Benz C-Class 2021 | MyCarFault
⚪ UNSOLVED No confirmed fix yet · Be the first to help

Mercedes C-Class W206 1.5 MHEV 48V Battery Fault

Mercedes-Benz C-Class 2021 M254 1.5 MHEV
On This Page: 🔧 All Repairs ⚠️ Avoid These 🔗 Similar Faults
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟡 Monitor Closely

The 48V mild hybrid battery in W206 C-Class can trigger system warnings from cell faults. Software update from Mercedes resolves most cases. Battery replacement: £800-1,800.

Repair / Solution

No confirmed fixes yet. Share yours below.

⚠️ Wrong Diagnosis?

No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Mercedes-Benz C-Class 2021 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.

🚗 More About This Vehicle

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