# Service bulletin LI80.50\-P\-077350

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: 11023048
- Published by NHTSA: 2025\-09\-09
- Manufacturer's number: LI80.50\-P\-077350
- Manufacturer's date: 2025\-09\-03
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Complaint Customer complains about anti\-theft alarm system triggering without obvious cause when the vehicle is parked and/or when entering the vehicle. All MFA2 and 167 derivates with code 882 may be affected. Cause This is caused by a sporadic loss of communication to the anti\-theft alarm system \[N26/6\]. In many instances there are one or more FCs U110D87, U001988, U016787 stored in the control units anti\-theft alarm system \[N26/6\] and/or signal acquisition and actuation module \[N10\] / \[N10/6\]. The alarm system memory may contain several alarm sources. Remedy Please process all following points in succession: 1. Initial problem \- Power supply of the overhead control panel \[N70\] \- Ground points of the overhead control panel \[N70\] • Model series 118, 177, 247: W78 • Model series 167: W15/2 • Model series 243: W78/2 \- LIN lines between overhead control panel \[N70\] and alarm siren \[H3/1\] \- CAN lines between overhead control panel \[N70\] and signal acquisition and actuation module \[N10\] or \[N10/6\] \- Delete fault memory and recheck vehicle Note \- If wiring fault is found in newer vehicle, please send in a IFQ \(Initial Field Quality\) TIPS Case. 2. Subsequent problem after repair In this case, the workshop must perform the following operation steps: \- Replace overhead control panel \[N70\] \(anti\-theft alarm system \[N26/6\] is integrated\) \- Clean electrical connectors of overhead control panel with commercially available contact cleaner and clean, purified compressed air. \- Delete fault memory and recheck vehicle Note \- If no remedy is found, please open a TIPS case and send to the Body/Chassis/Entertainment inbox.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11023048-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11023048-9999.pdf)

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

## Components

Electrical system

## Trouble codes named

U0019, U0167, U110D

## Vehicles listed

- 2019 to 2022 MERCEDES\-BENZ A 220
- 2020 to 2021 MERCEDES\-BENZ AMG A35
- 2020 to 2024 MERCEDES\-BENZ AMG CLA35
- 2020 to 2023 MERCEDES\-BENZ AMG CLA45
- 2024 to 2025 MERCEDES\-BENZ AMG GLA 35
- 2024 MERCEDES\-BENZ AMG GLA 35 4MATIC
- 2021 to 2023 MERCEDES\-BENZ AMG GLA35
- 2021 to 2023 MERCEDES\-BENZ AMG GLA45
- 2021 to 2025 MERCEDES\-BENZ AMG GLB35
- 2021 to 2022 MERCEDES\-BENZ AMG GLE53
- 2023 to 2025 MERCEDES\-BENZ AMG GLE53 4MATIC\+
- 2025 MERCEDES\-BENZ AMG GLE53 4MATIC\+ COUPE
- 2021 to 2022 MERCEDES\-BENZ AMG GLE63 S
- 2023 to 2024 MERCEDES\-BENZ AMG GLE63 S 4MATIC\+
- 2025 MERCEDES\-BENZ AMG GLE63 S 4MATIC\+ COUPE
- 2020 to 2025 MERCEDES\-BENZ CLA 250
- 2023 to 2025 MERCEDES\-BENZ EQB 250\+
- 2022 to 2025 MERCEDES\-BENZ EQB 300 4MATIC
- 2022 to 2025 MERCEDES\-BENZ EQB 350 4MATIC
- 2021 to 2025 MERCEDES\-BENZ GLA 250
- 2024 MERCEDES\-BENZ GLA 250 4MATIC
- 2020 to 2025 MERCEDES\-BENZ GLB 250
- 2020 to 2023 MERCEDES\-BENZ GLE 350
- 2024 to 2025 MERCEDES\-BENZ GLE 350 4MATIC
- 2020 to 2024 MERCEDES\-BENZ GLE 450
- 2025 MERCEDES\-BENZ GLE 450 4MATIC
- 2025 MERCEDES\-BENZ GLE 450 4MATIC COUPE
- 2024 to 2025 MERCEDES\-BENZ GLE 450E 4MATIC
- 2020 to 2021 MERCEDES\-BENZ GLE 580
- 2022 to 2024 MERCEDES\-BENZ GLE 580 4MATIC

JSON: [/v1/bulletins/11023048](/v1/bulletins/11023048)

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