# Service bulletin NCU\-2020080005

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: 10179973
- Published by NHTSA: 2020\-09\-21
- Manufacturer's number: NCU\-2020080005
- Manufacturer's date: 2020\-08\-14
- NHTSA component: ENGINE; ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

Mercedes\-Benz AG \("MBAG"\), the manufacturer of Mercedes\-Benz, has determined that on certain MY19\-20 C\-Class, GLC\-Class, and AMG GT \(205, 253, and 290 platform\) vehicles, the software for the AMG drive unit control unit does not correspond to the current series production configuration. As a result, noise may occur from the engine mounts. An authorized Mercedes\-Benz dealer will update the software as necessary.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10179973-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10179973-9999.pdf)

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

## Components

Electrical system, Engine, Software

## Vehicles listed

- 2019 MERCEDES\-BENZ AMG C43
- 2019 to 2020 MERCEDES\-BENZ AMG GLC43
- 2019 MERCEDES\-BENZ AMG GLC63
- 2019 MERCEDES\-BENZ AMG GLC63S
- 2019 to 2020 MERCEDES\-BENZ AMG GT
- 2019 MERCEDES\-BENZ AMG GT 63
- 2019 to 2020 MERCEDES\-BENZ AMG GT53
- 2019 to 2020 MERCEDES\-BENZ AMG GT63
- 2019 to 2020 MERCEDES\-BENZ AMG GT63S
- 2019 MERCEDES\-BENZ C 300
- 2019 to 2020 MERCEDES\-BENZ GLC 300
- 2019 MERCEDES\-BENZ GLC350E

## Recalls for the same vehicles and component

- [22V365000](/recalls/nhtsa/22V365000.md), 2022-05-20: COMMUNICATION: AUTO CRASH NOTIFICATION; ELECTRICAL SYSTEM:SOFTWARE
- [21V058000](/recalls/nhtsa/21V058000.md), 2021-02-05: ELECTRICAL SYSTEM:SOFTWARE; COMMUNICATION: AUTO CRASH NOTIFICATION
- [20V395000](/recalls/nhtsa/20V395000.md), 2020-07-06: ELECTRONIC STABILITY CONTROL \(ESC\); ELECTRICAL SYSTEM:SOFTWARE

## Other bulletins for the same vehicles and component

- [OTA\-24240201](/bulletins/10251176.md), 2024-03-04, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM. Mercedes\-Benz AG \(“MBAG”\), the manufacturer of Mercedes\-Benz vehicles, has determined that on certain MY20\-23 A\-Class, C\-Class, CLA, CLS, E\-Class, GLA, GLB, GLC, GLE, GLS, AMG GT, S\-Class \(177, 205, 118, 257, 213, 238, 247, 253, 167, 290, 217, 222 platform\) vehicles, the communication module system software does not correspond with the latest series production configuration. The communication module will receive an OTA update to improve the system stability and allow for better accessibility of Mercedes me services. MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit. All customers have been mailed a letter informing them of this OTA software update.
- [NCU\-HU SW Update](/bulletins/10241527.md), 2023-09-01, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM. Mercedes\-Benz AG \(“MBAG”\), the manufacturer of Mercedes\-Benz vehicles, has determined that on certain MY 2018\-2023 C\-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S\-Class \(206, 295, 294, 297, 296, 254, 167 and 223 platform\) vehicles, the communication module software does not correspond with the latest series production configuration. The update is free of charge and will be carried out in the background. The installation will eliminate software errors for a better entertainment experience. The update will show after the ignition has been cycled. MBUSA will conduct an OTA service campaign. A workshop visit for the customer is not required since remote software updates are automatically downloaded and installed in the customer’s vehicle. The OTA may be validated as successful on the customer’s Mercedes Me connect app under “Over\-the\-Air Vehicle Updates” as “Update for the communication module”. If the OTA is successful it will show a green “installed” and date of installation in the Over\-the\-Air update section.
- [LI46.15\-P\-063353](/bulletins/10217157.md), 2022-08-04, Service bulletin: STEERING; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. Complaint Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position \(e.g. with Easy Entry function\). Cause Height adjustment moves to the top/bottom limit stop and jams. 1. Steering column height adjustment transmission 2. Seat control unit software Remedy There are 2 repair procedures to follow depending on vehicle \(differentiated according to model and vehicle manufacturing date\) 1. Replace repair kit for steering column height adjustment 2. Perform software update of driver's seat control unit
- [LI54.30\-P\-070482](/bulletins/10177561.md), 2020-07-27, Service bulletin: EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:SOFTWARE. The check engine indicator light in the instrument cluster may be illuminated with one of the following fault codes: P261029, P02FF85, or P02FF02 stored in the engine control unit \(N3/10\). The time in instrument cluster is implausible due to an internal reset. If no other complaints exist then check for and perform any available software updates for the following control units: \- Motor electronics \(N3/10\) \- Powertrain control unit \(N127\) \- Instrument cluster \(A1\) If all three control units have the latest software installed and the complaint continues to occur then proceed with replacement of the instrument cluster \(A1\) Should the complaint re\-occur after the instrument cluster has been replaced then open a PTSS case with the following information: \- Control units logs for the ME, PTCU, and IC \- Initial quick test
- [SC\-2019110003](/bulletins/10169606.md), 2019-12-23, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Update sound system control unit software
- [LI83 30\-P\-069074](/bulletins/10158396.md), 2019-04-15, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:APPLIANCE:AIR CONDITIONER. No difference between blower setting 5 and 6 on air conditioning system

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