Mercedes-Benz S Class Recall R/2023/148: On Affected Vehicles The Voltage Converter Software Of The Secondary On-board Electrical…, Who Is Affected And What To Do
- Low
- How serious
- 4 Aug 2023
- Launched
- 363
- vehicles in the UK
- SRPC2310 / 5497104 / 5490207
- Manufacturer’s campaign code
Mercedes-Benz recalled S Class vehicles built between 6 July 2020 and 27 May 2021. The voltage converter software of the secondary on-board electrical system might not meet specifications. The dealer will update the voltage converter software of the secondary on-board electrical system via an over-the-air update in accordance with the Mercedes me terms of use or alternatively via its Mercedes-Benz service partners should the over-the-air update not be possible. You won't usually pay for it.1
What’s Wrong
The voltage converter software of the secondary on-board electrical system might not meet specifications.
DVSA's Original Wording
Concern: On affected vehicles the voltage converter software of the secondary on-board electrical system might not meet specifications. Defect: On affected vehicles the voltage converter software of the secondary on-board electrical system might not meet specifications. Remedy: Update the voltage converter software of the secondary on-board electrical system via an over-the-air update in accordance with the Mercedes me terms of use or alternatively via its Mercedes-Benz service partners should the over-the-air update not be possible.
Contains public sector information licensed under the Open Government Licence v3.0.
The Risk
The recall notice describes the concern as: on affected vehicles the voltage converter software of the secondary on-board electrical system might not meet specifications.
The Fix
The dealer will update the voltage converter software of the secondary on-board electrical system via an over-the-air update in accordance with the Mercedes me terms of use or alternatively via its Mercedes-Benz service partners should the over-the-air update not be possible. The fix is a software update, which usually takes under an hour at the dealer.
Are You Affected?
S Class built between 6 July 2020 and 27 May 2021 may be included. Mercedes-Benz estimates 363 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 SRPC2310 / 5497104 / 5490207 or the DVSA reference R/2023/148. 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 |
|---|---|---|---|
| S ClassWindshield bonding | Low | R/2026/191 | |
| AMG GT, GLC, S Class, SLProcessor Starter/Generator | Urgent | R/2025/124 | |
| AMG GT, C Class, CLE, E Class and 5 moreSystem protection | Low | R/2024/130 | |
| A Class, C Class, CLA(117), GLA and 2 moreOn affected vehicles the panel located between the windshield and the panoramic sunroof might not have been bonded correctly during a prior service repair | Low | R/2024/024 | |
| S ClassA 12V ground connection bolt in the boot might not meet specifications | Low | R/2023/259 |
This is one of 833 Mercedes-Benz recalls in DVSA’s data. The Mercedes-Benz recall launched before it was R/2023/143 on 27 Jul 2023, for on affected vehicles the wheel and brake bleed bolts might not have been tightened with…. The one launched after it was R/2023/149 on 4 Aug 2023, for on affected vehicles the voltage converter software of the secondary on-board electrical…. You can also see every Mercedes-Benz recall, all recalls launched in 2023 and software recalls across every make.
Source: DVSA recall R/2023/148, launched 4 August 2023. 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.