Mercedes-Benz A Class, C Class, CLS And 6 More Recall R/2021/083: The Software Of Certain Communication Modules May Not Meet Specifications, Who Is Affected And What To Do
- Low
- How serious
- 30 Mar 2021
- Launched
- 36
- vehicles in the UK
- SRPC2104
- Manufacturer’s campaign code
Mercedes-Benz recalled A Class, C Class, CLS and 6 more vehicles built between 3 February 2017 and 11 March 2020. The software of certain communication modules may not meet specifications. The dealer will carry out an update to the software of the communication module on affected vehicles. You won't usually pay for it.1
What’s Wrong
The software of certain communication modules may not meet specifications.
DVSA's Original Wording
Concern: THE SOFTWARE OF CERTAIN COMMUNICATION MODULES MAY NOT MEET SPECIFICATIONS Defect: The software of certain communication modules may not meet specifications. Remedy: Carry out an update to the software of the communication module on affected vehicles.
Contains public sector information licensed under the Open Government Licence v3.0.
The Risk
The recall notice describes the concern as: the software of certain communication modules may not meet specifications.
The Fix
The dealer will carry out an update to the software of the communication module on affected vehicles. The fix is a software update, which usually takes under an hour at the dealer.
Are You Affected?
A Class, C Class, CLS and 6 more built between 3 February 2017 and 11 March 2020 may be included. Mercedes-Benz estimates 36 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 SRPC2104 or the DVSA reference R/2021/083. 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 | |
| E ClassCoolant pump control software | Low | R/2026/201 | |
| A ClassInterior door handle release | Book soon | R/2026/098 | |
| E ClassRouting of transmission wiring harness | Book soon | R/2025/534 | |
| EQA, GLAShort-range sensor front | Low | R/2025/439 |
This is one of 833 Mercedes-Benz recalls in DVSA’s data. The Mercedes-Benz recall launched before it was R/2021/082 on 30 Mar 2021, for the communication module may be deactivated. The one launched after it was R/2021/098 on 9 Apr 2021, for the gear recognition function in the transmission could not function as intended. You can also see every Mercedes-Benz recall, the Mercedes-Benz C Class recall history, all recalls launched in 2021 and software recalls across every make.
Source: DVSA recall R/2021/083, launched 30 March 2021. 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.