HomeLI20.10-P-072886 · MERCEDES-BENZ, MERCEDES-MAYBACH
MERCEDES-BENZ, MERCEDES-MAYBACH

LI20.10-P-072886

Manufacturer communications

Publication date
2026-02-11
Received by NHTSA
2026-02-13
NHTSA record numbers
11028810

Manufacturer summary

Original wording in English

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 1. Use VMI to check for Emission Extended Warranty – Engine Thermostat (incl. software update) MY19-23, Various Models and Platforms (167, 190, 205, 213, 217, 222, 223, 232, 253, 290, 463) 2. If the vehicle is covered under the Emission Extended Warranty, Please perform steps outlined in the NCU for repairs. 3. If vehicle does not fall into the covered area of the Extended Warranty please check for Software updates to the ME control unit and then proceed with "Remedy Instructions" in attachments. Due to formatting issues please see "remedy instructions" in attachments

NHTSA manufacturer communications ↗

Reported code forms

Check vehicle applicability

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

MakeModelModel year
Mercedes-BenzAMG GLC63 S2023
Mercedes-BenzAMG GLC63 S2022
Mercedes-BenzAMG GLC63 S2021
Mercedes-BenzAMG GLC63 S2020
Mercedes-BenzAMG GLC63S2019
Mercedes-BenzAMG GLC63S2018
Mercedes-BenzAMG GLE63 S2022
Mercedes-BenzAMG GLE63 S2021
Mercedes-BenzAMG GLE63 S 4MATIC+2024
Mercedes-BenzAMG GLE63 S 4MATIC+2023
Mercedes-BenzAMG GLE63 S 4MATIC+ COUPE2025
Mercedes-BenzAMG GLS632022
Mercedes-BenzAMG GLS632021
Mercedes-BenzAMG GLS632020
Mercedes-BenzAMG GLS63 4MATIC+2025
Mercedes-BenzAMG GLS63 4MATIC+2024
Mercedes-BenzAMG GLS63 4MATIC+2023
Mercedes-BenzAMG GT2021
Mercedes-BenzAMG GT2020
Mercedes-BenzAMG GT2019
Mercedes-BenzAMG GT2018
Mercedes-BenzAMG GT2017
Mercedes-BenzAMG GT R2020
Mercedes-BenzAMG GT R2019
Mercedes-BenzAMG GT R2018
Mercedes-BenzAMG GT ROADSTER2018
Mercedes-BenzAMG GT S2019
Mercedes-BenzAMG GT S2018
Mercedes-BenzAMG GT S2017
Mercedes-BenzAMG GT S2016

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