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Other CSA-044

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeOther
NHTSA id11019877
Published by NHTSA2025-07-01
Manufacturer's numberCSA-044
Manufacturer's date2025-06-11
Campaign id or software versionCSA-044
NHTSA componentENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)

NHTSA's summary

From Mercedes-Benz: Mercedes=Benz is extending the coverage of the exhaust gas recirculation (EGR) valve on vehicle from the vehicle's basic warranty of 5 years/100,000 miles to 15 years/150,000 miles (whichever occurs first) and applies to the vehicle regardless of ownership. Extension is being given because M/B has determined that dimensional variations during engine valve seating may cause the EGR valve to be switched off, and the vehicle may experience a loss of power and enter a limp home mode. The MIL will illuminate and remain illuminated until the vehicle is serviced. When this occurs, the driver may perceive a jerky driving experience while operating the vehicle.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Exhaust and emissions, EGR valve

Vehicles listed
TIFFIN CAHABA2022
TIFFIN GH12023
TIFFIN WAYFARER2021
TIFFIN WAYFARER2023 to 2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.