Motor Distributors Limited (Mercedes-Benz) has announced a voluntary recall of certain Mercedes-Benz S-Class vehicles in Ireland. The issue, identified in collaboration with the manufacturer, relates to the Engine Control Unit (ECU) software. A failure in the system could lead to increased fuel injection during cylinder deactivation, resulting in dangerously high exhaust temperatures.
Affected Vehicles
- Model: Mercedes-Benz S-Class
- Production dates: 30 June 2020 – 19 September 2023
- Number of vehicles affected in Ireland: 1
Details of the Fault
The fault concerns the lambda control in the ECU software. In rare cases of independent hardware failure, the software can erroneously increase the amount of fuel injected during cylinder deactivation.
This can cause:
- Excessively high exhaust temperatures
- Damage to nearby components such as the engine wiring harness and catalytic converter
Risks
The identified fault poses multiple safety and environmental risks:
- Unexpected loss of propulsion, which could lead to accidents
- Increased risk of fire due to damaged components
- Exceeding statutory exhaust emission limits, breaching regulatory standards
What Owners Should Do
Mercedes-Benz will contact affected owners directly. Vehicle owners are advised to:
- Wait for official notification from Motor Distributors Limited (Mercedes-Benz)
- Arrange an appointment with their authorised Mercedes-Benz service centre
- Have the ECU software updated free of charge
How to Check if Your Car is Affected
Owners can verify if their vehicle is part of this recall by:
- Contacting Motor Distributors Limited (Mercedes-Benz Ireland)
- Using the official Mercedes-Benz Recall Checker
- Referring to their Vehicle Identification Number (VIN) for confirmation
Official Sources
FAQs
Q: Is my Mercedes-Benz S-Class safe to drive before repair?
It is recommended that owners arrange inspection and repair as soon as possible. Continuing to drive may increase risks.
Q: How much will the repair cost?
The recall-related repair will be carried out free of charge.
Q: What if I recently purchased a used S-Class?
You should still check your VIN with Mercedes-Benz, as recalls apply regardless of ownership history.
Disclaimer
This article is based on official recall information provided by Motor Distributors Limited (Mercedes-Benz). It is intended for public awareness. Owners should rely on direct communication from the manufacturer for instructions.
