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Service bulletin LI20.10-P-072886

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)
TypeService bulletin
NHTSA id10209876
Published by NHTSA2022-04-05
Manufacturer's numberLI20.10-P-072886
Manufacturer's date2022-03-10
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Complaint CEL on with Code P012800 "The Coolant Temperature is Below the Specified Temperature" Cause Under investigation. This is not an issue that affects drivability or performance and is not a safety concern. The vehicle remains safe to operate with this code, but the measures listed in the "Remedy" section are recommended. Remedy Run guided tests as described.

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

Trouble codes named

P0128

Vehicles listed
MERCEDES-BENZ MERCEDES-BENZ

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