# Other CL \- EW M264

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Other
- NHTSA id: 11028003
- Published by NHTSA: 2026\-02\-02
- Manufacturer's number: CL \- EW M264
- Manufacturer's date: 2026\-01\-23
- NHTSA component: ENGINE

## NHTSA's summary

Dear Mercedes\-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes\-Benz products and to enhance the satisfaction of our customers, Mercedes\-Benz USA is extending the warranty coverage on the exhaust valve system in your vehicle from the original New Vehicle Limited Warranty of 4 years/ 50,000 miles to 15 years/ 150,000 miles \(whichever occurs first\). This applies to the vehicle regardless of ownership. On certain Model Year 2018 \- 2023 C\-Class, E\-Class, GLC and GLE vehicles with the 4\-cylinder engine "M264", over time, the exhaust valve system might not continue to work properly and result in an engine misfire and potential illumination of the check engine Malfunction Indicator Lamp \('MIL'\). Any repairs under this warranty extension must be performed by an authorized Mercedes\-Benz dealership. •If your preferred authorized Mercedes\-Benz dealership performs diagnosis and confirms that your vehicle meets the criteria for this extended warranty, the repair will be covered at no cost to you. •This extended warranty does not apply to any other components or conditions beyond the ones described under this extended warranty, and standard warranty terms apply, including the exclusions with respect to extra expenses, as identified in the Service and Warranty Information booklet.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028003-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028003-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2019 to 2023 MERCEDES\-BENZ C 300
- 2021 to 2023 MERCEDES\-BENZ C 300 4MATIC
- 2018 to 2019 MERCEDES\-BENZ E 300
- 2020 to 2023 MERCEDES\-BENZ E 350
- 2020 to 2023 MERCEDES\-BENZ GLC 300
- 2023 MERCEDES\-BENZ GLC 300 4MATIC
- 2020 to 2023 MERCEDES\-BENZ GLE 350

JSON: [/v1/bulletins/11028003](/v1/bulletins/11028003)

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