Mercedes-Benz Viano Recall R/2021/393: Software Update To Improve Emissions, Who Is Affected And What To Do
- Low
- How serious
- 24 Nov 2021
- Launched
- 2,438
- vehicles in the UK
- SRX2106
- Manufacturer’s campaign code
Mercedes-Benz recalled Viano vehicles built between 6 July 2010 and 21 March 2013. As a result of a directive from Germany,s Federal Motor Transport Authority (KBA) changes are required to certain specific calibration functions within the engine management systems of certain vehicles. The recall notice describes the fix as: conduct an update to the diesel engine control unit software. You won't usually pay for it.1
What’s Wrong
As a result of a directive from Germany,s Federal Motor Transport Authority (KBA) changes are required to certain specific calibration functions within the engine management systems of certain vehicles.
DVSA's Original Wording
Concern: SOFTWARE UPDATE TO IMPROVE EMISSIONS Defect: As a result of a directive from Germany�s Federal Motor Transport Authority (KBA) changes are required to certain specific calibration functions within the engine management systems of certain vehicles. Remedy: Conduct an update to the diesel engine control unit software.
Contains public sector information licensed under the Open Government Licence v3.0.
The Risk
The recall notice describes the concern as: software update to improve emissions.
The Fix
The recall notice describes the fix as: conduct an update to the diesel engine control unit software. The fix is a software update, which usually takes under an hour at the dealer.
Are You Affected?
Viano built between 6 July 2010 and 21 March 2013 may be included. Mercedes-Benz estimates 2,438 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 SRX2106 or the DVSA reference R/2021/393. 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 |
|---|---|---|---|
| VianoVariant of driver's airbag | Urgent | R/2025/262 | |
| VianoVariant of driver's airbag | Urgent | R/2025/261 | |
| VianoThe driver's airbag may not correctly deploy if activated | Urgent | R/2021/413 | |
| VianoThe takata driver's air bag might not deploy as specified | Urgent | R/2022/161 | |
| VianoThe driver's air bag may not deploy as specified | Urgent | R/2022/162 |
This is one of 833 Mercedes-Benz recalls in DVSA’s data. The Mercedes-Benz recall launched before it was R/2021/379 on 19 Nov 2021, for the software of the air bag control unit might not meet specifications. The one launched after it was R/2021/382 on 26 Nov 2021, for the fuel level might not be displayed correctly. You can also see every Mercedes-Benz recall, all recalls launched in 2021 and software recalls across every make.
Source: DVSA recall R/2021/393, launched 24 November 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.