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KNOWN FAULT · Mercedes-Benz

48 V wiring and driver-assistance software on the new CLA (C178)

Sources are not verified in real time and no entry confirms that your car is affected.

Engine / equipment
2025 Mercedes CLA (hybrid and electric)
Period mentioned
2025
Symptoms
On hybrids, risk of overheating, fire or electric shock from the 48 V wiring; assistance functions that switch off without warning the driver properly.
Possible cause described
Mercedes recalled 1,682 CLA hybrids built from 17/11 to 19/12/2025 for the 48 V wiring (poorly protected contacts). In addition, the KBA flagged 3,197 CLAs on which some assistance functions can switch off without enough warning: new software is installed.
Check for the garage
Check by VIN at the dealer that the campaign has been done.
Cost cited in the source
Free under the recall.A rough figure from the original database, not an up-to-date quote.

Sources from the original database

ÖAMTC: Mercedes-Benz CLA, 48 V wiring problemsAuto Motor und Sport: CLA recall

Has this happened to you?

Anonymous answer, no personal data.

Frequently asked questions

How much does it cost to repair this fault?

Free under the recall.

A rough figure from the original database, not an up-to-date quote.

Calculate estimate
How is it checked?

Check by VIN at the dealer that the campaign has been done.

What are the symptoms?

On hybrids, risk of overheating, fire or electric shock from the 48 V wiring; assistance functions that switch off without warning the driver properly.

Which cars and years does it affect?
Brands
Mercedes-Benz
Engine / equipment
2025 Mercedes CLA (hybrid and electric)
Period mentioned
2025

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