# Service bulletin LI20.10\-P\-075943

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: 10232326
- Published by NHTSA: 2023\-03\-03
- Manufacturer's number: LI20.10\-P\-075943
- Manufacturer's date: 2023\-02\-23
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Complaint Check engine light illuminated Red coolant warning in instrument cluster Fault codes U019F00 or U019F87 stored in PTCU \(N127\) Cause Electric coolant pump communication Remedy 1\-Check electric connections on electric coolant pump M75/11 for clean/tight installation. Repair as needed. 2\-Update software of MED40 control unit. 3\-Replace electric coolant pump M75/11 with part A2742004900.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10232326-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10232326-9999.pdf)

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

## Components

Engine

## Trouble codes named

U019F

## Vehicles listed

- 2018 to 2020 MERCEDES\-BENZ C 350 E
- 2016 to 2017 MERCEDES\-BENZ C350E
- 2018 MERCEDES\-BENZ GLC 350 E
- 2020 to 2021 MERCEDES\-BENZ GLC 350 E
- 2019 MERCEDES\-BENZ GLC350E

JSON: [/v1/bulletins/10232326](/v1/bulletins/10232326)

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