# Service bulletin LI 27.10\-P\-080851

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: 11037211
- Published by NHTSA: 2026\-09\-09
- Manufacturer's number: LI 27.10\-P\-080851
- Manufacturer's date: 2026\-08\-29
- NHTSA component: POWER TRAIN

## NHTSA's summary

Complaint Intermittent shift feel or thud/clunk noise perceived, such as a brief jerk or transmission reaction during certain driving situations. May be most noticeable when transitioning from a coasting condition to accelerator pedal application. May occur in all drive modes. Cause Dual‑clutch transmissions \(DCT\) inherently exhibit more dynamic shifting behavior compared to other types of transmissions. This is due to the use of physical clutches for starting and gear changes. In certain situations, dynamic driving behavior can lead to a slight jerk sensation which is a normal technical characteristic of the transmission. A typical example is a "Change of Mind" situation: • The customer is coasting towards a red traffic light. • The traffic light turns green while the vehicle is still coasting. • The customer then presses the accelerator pedal. In these situations, a slight jerk may occur briefly because the transmission must quickly engage the appropriate gear and control the clutches accordingly. Since shift forks are responsible for engaging the gears during shifting, a slight shifting noise may also be noticeable. Please note driving programs S, S\+, and M are designed to provide sportier vehicle behavior and are not optimized primarily for maximum comfort, so this operation may be more audible. Remedy Verify the customer's concern and confirm proper transmission operation. If no faults or abnormal operating conditions are identified by IPR \(Intelligent Predictive Repair\), no hardware replacement is necessary. Inform the customer that the transmission has been designed to provide direct gear engagement and responsive vehicle performance. Under certain operating conditions, brief shift sensations may be perceptible and are consistent with the operating characteristics of the dual‑clutch transmission

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037211-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11037211-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2019 to 2022 MERCEDES\-BENZ A 220
- 2019 to 2022 MERCEDES\-BENZ A 220 4MATIC
- 2020 to 2021 MERCEDES\-BENZ AMG A35
- 2020 MERCEDES\-BENZ AMG A35 4MATIC
- 2020 to 2024 MERCEDES\-BENZ AMG CLA35
- 2020 MERCEDES\-BENZ AMG CLA35 4MATIC
- 2025 MERCEDES\-BENZ AMG CLA35 4MATIC
- 2014 to 2023 MERCEDES\-BENZ AMG CLA45
- 2020 MERCEDES\-BENZ AMG CLA45 4MATIC
- 2025 MERCEDES\-BENZ AMG CLA45S 4MATIC
- 2024 to 2025 MERCEDES\-BENZ AMG GLA 35
- 2024 MERCEDES\-BENZ AMG GLA 35 4MATIC
- 2021 to 2023 MERCEDES\-BENZ AMG GLA35
- 2015 to 2023 MERCEDES\-BENZ AMG GLA45
- 2021 to 2025 MERCEDES\-BENZ AMG GLB35
- 2018 MERCEDES\-BENZ C 350 E
- 2016 to 2017 MERCEDES\-BENZ C350E
- 2018 to 2025 MERCEDES\-BENZ CLA 250
- 2020 to 2025 MERCEDES\-BENZ CLA 250 4MATIC
- 2013 to 2017 MERCEDES\-BENZ CLA250
- 2013 to 2015 MERCEDES\-BENZ E400 HYBRID
- 2014 to 2025 MERCEDES\-BENZ GLA 250
- 2021 to 2025 MERCEDES\-BENZ GLA 250 4MATIC
- 2020 to 2025 MERCEDES\-BENZ GLB 250
- 2020 to 2025 MERCEDES\-BENZ GLB 250 4MATIC
- 2018 MERCEDES\-BENZ GLC 350 E
- 2019 MERCEDES\-BENZ GLC350E
- 2018 to 2019 MERCEDES\-BENZ GLE 550 E
- 2016 to 2017 MERCEDES\-BENZ GLE550E
- 2015 MERCEDES\-BENZ S550E
- 2017 MERCEDES\-BENZ S550E

JSON: [/v1/bulletins/11037211](/v1/bulletins/11037211)

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