Recalls › European Union › Passenger car

Passenger car — recall

Name: Passenger car
Brand: Mercedes-Benz

Automotive · European Union · 2024-12-13

Origin: Germany

Mercedes-Benz passenger car ECU software may erroneously increase air-fuel mixture.

Country	European Union
Category	Automotive
Published	2024-12-13
Country of origin	Germany
Manufacturer	Mercedes-Benz
Models affected	S-Class
Defect	In the event of an independent hardware failure, the lambda control in the Engine Control Unit (ECU) software can erroneously increase the amount of injected fuel during cylinder deactivation. As a result, exhaust temperatures can increase and this can damage surrounding components (e.g. engine wiring harness, catalytic converter). This can create an unexpected loss of propulsion, increasing the risk of accidents and injuries. Moreover, this can increase the risk of fire. In addition, local statutory exhaust emission limits could be exceeded.
Remedy	Recall of the product from end users.
Recall number	A12/03598/24
Official notice	View source ↗

What this means for sellers

Likely platform / channel actions	OEMs/dealers will run the remedy (repair, replace or refund); component suppliers in the chain may face traceback.
Self-check for comparable products	Check your comparable products' design, materials and QC records against the defect described here.
Rules & standards likely involved	UNECE regulations, EU type-approval · Full guide →

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