Land Rover Defender 2015–2026 — technical service bulletin
Bulletin SSM76386 - 29AUG25 · NHTSA communication 11022436 · issued Aug 29, 2025
Technical service bulletin
communication type
Unknown / Other
component
2015–2026
model years
49
vehicle entries
Official summary
Body and Comfort (HMI) CAN related functions such as window switches or air conditioning may reset or become inoperable every 8-10 minutes while driving.
Vehicles covered
- 2020 Land Rover Defender
- 2021 Land Rover Defender
- 2022 Land Rover Defender
- 2023 Land Rover Defender
- 2024 Land Rover Defender
- 2025 Land Rover Defender
- 2017 Land Rover Discovery
- 2018 Land Rover Discovery
- 2019 Land Rover Discovery
- 2020 Land Rover Discovery
- 2021 Land Rover Discovery
- 2022 Land Rover Discovery
- 2023 Land Rover Discovery
- 2024 Land Rover Discovery
- 2025 Land Rover Discovery
- 2015 Land Rover Discovery Sport
- 2016 Land Rover Discovery Sport
- 2017 Land Rover Discovery Sport
- 2018 Land Rover Discovery Sport
- 2019 Land Rover Discovery Sport
- 2020 Land Rover Discovery Sport
- 2021 Land Rover Discovery Sport
- 2022 Land Rover Discovery Sport
- 2023 Land Rover Discovery Sport
- 2024 Land Rover Discovery Sport
- 2025 Land Rover Discovery Sport
- 2022 Land Rover Range Rover
- 2023 Land Rover Range Rover
- 2024 Land Rover Range Rover
- 2025 Land Rover Range Rover
- 2019 Land Rover Range Rover Evoque
- 2020 Land Rover Range Rover Evoque
- 2021 Land Rover Range Rover Evoque
- 2022 Land Rover Range Rover Evoque
- 2023 Land Rover Range Rover Evoque
- 2024 Land Rover Range Rover Evoque
- 2025 Land Rover Range Rover Evoque
- 2023 Land Rover Range Rover Sport
- 2024 Land Rover Range Rover Sport
- 2025 Land Rover Range Rover Sport
- 2018 Land Rover Range Rover Velar
- 2019 Land Rover Range Rover Velar
- 2020 Land Rover Range Rover Velar
- 2021 Land Rover Range Rover Velar
- 2022 Land Rover Range Rover Velar
- 2023 Land Rover Range Rover Velar
- 2024 Land Rover Range Rover Velar
- 2025 Land Rover Range Rover Velar
- 2026 Land Rover Range Rover Velar
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.