# Service bulletin LI20.30\-P\-078666

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: 11012053
- Published by NHTSA: 2024\-12\-23
- Manufacturer's number: LI20.30\-P\-078666
- Manufacturer's date: 2024\-12\-19
- NHTSA component: ENGINE

## NHTSA's summary

Complaint Coolant level warning in instrument cluster. Coolant odor or leaking from coolant expansion reservoir. Cause Level sensor electrical connections not present in expansion reservoir. Remedy 1. Inspect expansion tank level sensor electrical connection for missing contacts. Additionally the triangular sticker will not be present on top of reservoir. See example of OK and NOK part. 2. Replace expansion reservoir if level sensor contacts are confirmed missing. 3. Repair any damage to wiring or electrical contacts on wiring harness. 4. Create a TIPS case with supporting photos and submit to the IFQ inbox for information. Vehicle can be released after repair is complete.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11012053-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11012053-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2025 MERCEDES\-BENZ GLE 350 4MATIC
- 2025 MERCEDES\-BENZ GLE 450E 4MATIC

JSON: [/v1/bulletins/11012053](/v1/bulletins/11012053)

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