# Service bulletin NCU\-2020050028

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: Service bulletin
- NHTSA id: 10210920
- Published by NHTSA: 2022\-05\-04
- Manufacturer's number: NCU\-2020050028
- Manufacturer's date: 2022\-04\-07
- NHTSA component: ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL

## NHTSA's summary

Mercedes\-Benz USA, LLC \(“MBUSA”\) is modifying the emission control system on certain diesel vehicles. The Emission Modification for MY11\-12 E350 BlueTEC \(W212\) vehicles has been approved by EPA and CARB, and is now ready for installation. An authorized Mercedes\-Benz Dealer will install the Emission Modification at no cost to the Owner/Lessee. What We’re Doing An authorized Mercedes\-Benz Dealer will replace certain emission control system components and update certain software in eligible vehicles.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10210920-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10210920-9999.pdf)

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

## Components

Engine, Fuel system

## Vehicles listed

- 2011 to 2012 MERCEDES\-BENZ E350

JSON: [/v1/bulletins/10210920](/v1/bulletins/10210920)

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