Mercedes-Benz A Class, B Class, CLA And 1 More Recall R/2020/277: An Electrical Contact Inside The Engine Control Unit May Not Meet The Specification, Who Is Affected And What To Do
- Low
- How serious
- 27 Oct 2020
- Launched
- 37
- vehicles in the UK
- SRPC2033
- Manufacturer’s campaign code
Mercedes-Benz recalled A Class, B Class, CLA and 1 more vehicles built between 11 December 2019 and 9 January 2020. An electrical contacting inside the engine control unit might not meet the specification. The dealer will replace the engine control unit on the affected vehicles. You won't usually pay for it.1
What’s Wrong
An electrical contacting inside the engine control unit might not meet the specification.
DVSA's Original Wording
Concern: AN ELECTRICAL CONTACT INSIDE THE ENGINE CONTROL UNIT MAY NOT MEET THE SPECIFICATION Defect: An electrical contacting inside the engine control unit might not meet the specification Remedy: Replace the engine control unit on the affected vehicles
Contains public sector information licensed under the Open Government Licence v3.0.
The Risk
The recall notice describes the concern as: an electrical contact inside the engine control unit may not meet the specification.
The Fix
The dealer will replace the engine control unit on the affected vehicles.
Are You Affected?
A Class, B Class, CLA and 1 more built between 11 December 2019 and 9 January 2020 may be included. Mercedes-Benz estimates 37 vehicles in the UK. Enter your registration to check, then confirm by VIN with Mercedes-Benz, because not every car in the date range may be included.
Which Car Is It?
Choose the make and model so we can match recalls to your car.
What To Do Now
- Check your car by registration above, then by VIN with Mercedes-Benz.
- Book with any franchised Mercedes-Benz dealer, quoting the campaign code SRPC2033 or the DVSA reference R/2020/277. See how to get a Mercedes-Benz recall fixed.
- Follow the letter's instructions until the repair is done. See can you drive a car with a recall?.
Related Recalls
| Launched | Vehicle and fault | Severity | Reference |
|---|---|---|---|
| CLS, E Class, GLCDrive shaft joint | Low | R/2026/148 | |
| CLA, GLBElectric drive unit power electronics | Low | R/2026/315 | |
| CLA, GLBSoftware version of communication module | Low | R/2026/203 | |
| A ClassInterior door handle release | Book soon | R/2026/098 | |
| CLABolting of front seats and belt buckles | Urgent | R/2025/533 |
This is one of 833 Mercedes-Benz recalls in DVSA’s data. The Mercedes-Benz recall launched before it was R/2020/274 on 21 Oct 2020, for the adjustable second seat row may not have been installed to specifications. The one launched after it was R/2020/285 on 13 Nov 2020, for software update required to improve emissions. You can also see every Mercedes-Benz recall and all recalls launched in 2020.
Source: DVSA recall R/2020/277, launched 27 October 2020. Data updated 15 October 2026. How we grade urgency.
Sources
- The Code does not itself say repairs are free. GOV.UK guidance says "You will not usually have to pay for any repairs or parts under a safety recall." gov.uk Checked 15 Oct 2026.