# Service bulletin LI20.00\-P\-076708

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: 10240165
- Published by NHTSA: 2023\-08\-02
- Manufacturer's number: LI20.00\-P\-076708
- Manufacturer's date: 2023\-07\-24
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

## NHTSA's summary

Check engine lamp activated, coolant warning message, and engine fan running at full speed. Below fault codes stored in N127 PTCU related to LIN network components. U063200, U063287, U02A900, U02A987, U0698E4, U0698E5, U02C800, U02C887, U063B00, U063B87 Under analysis. Create a TIPS case with findings of below checks. Include: • Initial quick test showing fault codes. • Details from owner on events leading up to symptoms Inspect wiring and connections \(pins/sockets\) for damage or corrosion at below components. \-N127 \-X25/7x1 \-M4/7 Engine cooling fan \-Y73/1 coolant directional control valve \-M43/7 circulation pump 2 low\-temperature circuit \-M43/8 circulation pump 3 low\-temperature circuit

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10240165-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10240165-9999.pdf)

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

## Components

Electrical system, Engine

## Trouble codes named

U02A9, U02C8, U0632, U063B, U0698

## Vehicles listed

- 2022 to 2023 MERCEDES\-BENZ AMG GLC43
- 2022 MERCEDES\-BENZ AMG GLC63
- 2022 to 2023 MERCEDES\-BENZ AMG GLC63 S
- 2022 to 2023 MERCEDES\-BENZ GLC 300

JSON: [/v1/bulletins/10240165](/v1/bulletins/10240165)

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