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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 id10195221
Published by NHTSA2021-06-07
Manufacturer's numberLI20.10-P-072886
Manufacturer's date2021-04-20
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:SENSOR/THERMOSTAT; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

with engine M17x the ME Control Unit: "The Coolant Temperature is Below the Specified Temperature"

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

Electrical system, Engine, Equipment and accessories, Hybrid and electric drive, Cooling system, High-voltage battery

Vehicles listed
MERCEDES-BENZ AMG GLC632020
MERCEDES-BENZ C 3002020 to 2021
MERCEDES-BENZ C 3502020
MERCEDES-BENZ C 350 E2020
MERCEDES-BENZ E 3502020 to 2021
MERCEDES-BENZ E 350 E2021
MERCEDES-BENZ E 4502020 to 2021
MERCEDES-BENZ E63 AMG2020
MERCEDES-BENZ GLA 2502020 to 2021
MERCEDES-BENZ GLB 2002020
MERCEDES-BENZ GLB 2502020 to 2021
MERCEDES-BENZ GLC 3002020 to 2021
MERCEDES-BENZ GLC 3502020
MERCEDES-BENZ GLC 350 E2020 to 2021
MERCEDES-BENZ GLE 3502020 to 2021
MERCEDES-BENZ GLE 350 E2020 to 2021
MERCEDES-BENZ GLE 4502020 to 2021
MERCEDES-BENZ GLE 5802020 to 2021
MERCEDES-BENZ GLS 4502020
MERCEDES-BENZ GLS 580 4MATIC2020
MERCEDES-BENZ GLS4502021
MERCEDES-BENZ GLS5802021
MERCEDES-MAYBACH GLS 6002021

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