# Service bulletin LI27 50\-P\-064440

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: 10151943
- Published by NHTSA: 2018\-12\-17
- Manufacturer's number: LI27 50\-P\-064440
- Manufacturer's date: 2018\-07\-16
- NHTSA component: POWER TRAIN

## NHTSA's summary

7G\-DCT: Scratching noise when changing gear from D to R when transmission cold.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10151943-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10151943-0001.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2014 to 2016 MERCEDES BENZ B\-CLASS ELECTRIC
- 2014 to 2018 MERCEDES\-BENZ AMG CLA45
- 2015 to 2018 MERCEDES\-BENZ AMG GLA45
- 2014 to 2017 MERCEDES\-BENZ B 250E
- 2011 to 2013 MERCEDES\-BENZ B242
- 2011 to 2013 MERCEDES\-BENZ B246
- 2018 MERCEDES\-BENZ CLA 250
- 2011 to 2013 MERCEDES\-BENZ CLA117
- 2012 to 2017 MERCEDES\-BENZ CLA250
- 2015 to 2019 MERCEDES\-BENZ GLA 250
- MERCEDES\-BENZ MERCEDES\-BENZ

## Other bulletins for the same vehicles and component

- [GI3330P061452](/bulletins/10205143.md), 2021-12-20, Service bulletin: POWER TRAIN:AXLE ASSEMBLY; EQUIPMENT. Clacking noises from the front axle area.
- [LI54.15\-P\-057373](/bulletins/10167510.md), 2019-11-12, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. The vehicle cannot be started The vehicle may start by itself shortly after the startup attempt with a delay, as the relay can be late closing. and/or The gear selection is displayed, but no gear is engaged. Gear selection is not possible. and/or Rear window wiper inoperative. and/or Various fault codes concerning disrupted communication paths are stored and/or the corresponding control units are not displayed in the quick test. Affected control units include the transmission control unit, electronic ignition lock, driver SAM, engine control unit, Lane Keeping Assist, Distronic.
- [LI27.60\-P\-058317](/bulletins/10167497.md), 2019-11-12, Service bulletin: POWER TRAIN. Transmission intermittently fails to shift, vehicle jolts in higher gears. The dual clutch transmission \(DKG\) control unit contains the stored FC 92177 or FC 92100 \("The shift valve of the internal shaft has a malfunction. The commanded position cannot be reached"\). In the extended fault freeze frame data it can be seen that this fault was set in 7th gear \- see Figure 1 in attachment.
- [LI27.60\-P\-058283](/bulletins/10166986.md), 2019-11-04, Service bulletin: POWER TRAIN. Reverse gear cannot be engaged. The following fault code is stored in the dual clutch transmission \(DKG\) control unit: FC 074600 \-\> Pressure regulating valve 1 does not close or FC 077600 \-\> Pressure regulating valve 1 does not close In the extended fault freeze frame data it can be seen that both clutches are pressurized when the fault code 074600 or 077600 occurs \- see Figure 1 in attachment.

JSON: [/v1/bulletins/10151943](/v1/bulletins/10151943)

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