Vehicle recall R/2021/438

Mercedes-Benz E-Class and others recall: Coolant pump might have a leakage between the vacuum system and the coolant circuit

DVSA recall R/2021/438 names the Mercedes-Benz E-Class, Mercedes-Benz CLS, Mercedes-Benz S-Class, Mercedes-Benz GLC, Mercedes-Benz C-Class, Mercedes-Benz G-Class and 2 more Mercedes-Benz models. It was launched 21 January 2022. It covers vehicles built 4 April 2017 to 12 October 2021.

Recall data updated 22 September 2026

Recall: R/2021/438
Launched: 21 January 2022
Issued by: MERCEDES-BENZ CARS UK LTD
Manufacturer reference: SRPC2157
Vehicles: 35,624 across the whole recall

What can go wrong

On certain vehicles with a Diesel engine the coolant pump which is controlled by vacuum might have a leakage between the vacuum system and the coolant circuit.

The fix

Update the software of the coolant pump and replace the electrical switch valve on the affected vehicles.

Models and build dates

As listed in the DVSA recall file. DVSA gives one vehicle number for the whole recall: 35,624.
Model	Built
Mercedes-Benz C-Class	4 April 2017 to 12 October 2021
Mercedes-Benz CLS	4 April 2017 to 12 October 2021
Mercedes-Benz E-Class	not recorded
Mercedes-Benz E-Class	4 April 2017 to 12 October 2021
Mercedes-Benz E-Class (E-CLASS COUPE/CONVERTIBLE)	4 April 2017 to 12 October 2021
Mercedes-Benz G-Class	4 April 2017 to 12 October 2021
Mercedes-Benz GLC	4 April 2017 to 12 October 2021
Mercedes-Benz GLE (GLE/GLS(167))	4 April 2017 to 12 October 2021
Mercedes-Benz GLS (GLE/GLS(167))	4 April 2017 to 12 October 2021
Mercedes-Benz S-Class	4 April 2017 to 12 October 2021

Is a specific car affected? A recall lists models and build dates, not individual vehicles, so these pages cannot tell you whether one car is included. Enter the registration on the DVSA vehicle recall checker on GOV.UK, or give the vehicle identification number (VIN) to the manufacturer or one of its dealers. Buying used? Ask the seller for proof that any recall work was done.

Other recalls for these models

R/2021/446 The crankshaft might not meet specifications 13 January 2022, Mercedes-Benz GLB, Mercedes-Benz GLE, Mercedes-Benz E-Class and others
R/2021/434 The configuration of the mbux system might not meet specifications. 12 January 2022, Mercedes-Benz C-Class, Mercedes-Benz S-Class
R/2021/384 Mounting screws of front axle brake callipers might not meet specifications 11 January 2022, Mercedes-Benz CLS, Mercedes-Benz S-Class, Mercedes-Benz E-Class
R/2021/365 To achieve an improvement in the emissions 11 January 2022, Mercedes-Benz S-Class
R/2022/019 The software of the engine control unit might not meet specifications 10 February 2022, Mercedes-Benz GLE, Mercedes-Benz GLS, Mercedes-Benz CLS and others
R/2022/024 The communication module might not meet specifications 16 February 2022, Mercedes-Benz S-Class

Found one you might buy?

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Source

Contains public sector information licensed under the Open Government Licence v3.0. Source: DVSA vehicle recall records (RecallsFile.csv), recalls launched 1992 to 2026. Recall data updated 22 September 2026.

Recall wording is DVSA's, with capitals and punctuation tidied and American spellings such as tire, center and windshield given in British English. We list a recall when its make and model match a car or van family with at least 1,000 DVSA MOT tests from 2022 to 2025, and when the maker of the vehicle issued it.

Not affiliated with or endorsed by DVSA. Methodology · Data sources