Mercedes-Benz A 220 2019–2025 — technical service bulletin
Bulletin LI27.60-P-071321 · NHTSA communication 11022048 · issued Aug 7, 2025
Technical service bulletin
communication type
Power Train
component
2019–2025
model years
22
vehicle entries
Official summary
Complaint Transmission limp-home mode with fault message in IC "Gear Change to R Not Possible", the even gears are locked. The concern of transmission limp-home mode disappears after the ignition is switched off and on again. P092500 The shift valve of the hollow shaft has a malfunction. _ is present in the DKG Control Unit (Y3/14n4), and the extended freeze frame data shows hex code 25 F2 (see attachments for reference) Cause Hydraulic fault caused by the transmission software. The engagement of 2nd gear by preselection after 4-3 downshift does not function due to activation fault. Remedy Che
Vehicles covered
- 2019 Mercedes-Benz A 220
- 2020 Mercedes-Benz A 220
- 2021 Mercedes-Benz A 220
- 2022 Mercedes-Benz A 220
- 2021 Mercedes-Benz AMG GLB35
- 2022 Mercedes-Benz AMG GLB35
- 2023 Mercedes-Benz AMG GLB35
- 2024 Mercedes-Benz AMG GLB35
- 2025 Mercedes-Benz AMG GLB35
- 2019 Mercedes-Benz CLA 250
- 2020 Mercedes-Benz CLA 250
- 2021 Mercedes-Benz CLA 250
- 2022 Mercedes-Benz CLA 250
- 2023 Mercedes-Benz CLA 250
- 2024 Mercedes-Benz CLA 250
- 2025 Mercedes-Benz CLA 250
- 2020 Mercedes-Benz GLB 250
- 2021 Mercedes-Benz GLB 250
- 2022 Mercedes-Benz GLB 250
- 2023 Mercedes-Benz GLB 250
- 2024 Mercedes-Benz GLB 250
- 2025 Mercedes-Benz GLB 250
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.