# Service bulletin LI83.20\-P\-072178

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: 10187784
- Published by NHTSA: 2021\-03\-01
- Manufacturer's number: LI83.20\-P\-072178
- Manufacturer's date: 2021\-01\-04
- NHTSA component: ELECTRICAL SYSTEM; EQUIPMENT

## NHTSA's summary

The customer complains that when the ignition is switched on, pulsating buzzing noises which fluctuate in volume can be heard coming from the area of the instrument panel or the driver's footwell.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187784-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187784-9999.pdf)

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

## Components

Electrical system, Equipment and accessories

## Vehicles listed

- 2019 to 2020 MERCEDES\-BENZ AMG GLC63
- 2019 MERCEDES\-BENZ AMG GLC63S
- 2019 to 2021 MERCEDES\-BENZ GLC 300
- 2019 to 2020 MERCEDES\-BENZ GLC 350
- 2020 to 2021 MERCEDES\-BENZ GLC 350 E
- 2019 MERCEDES\-BENZ GLC350E

JSON: [/v1/bulletins/10187784](/v1/bulletins/10187784)

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