Land Rover Defender 2015–2026 — technical service bulletin
Bulletin SSM76386 - 29AUG25 · NHTSA communication 11022436 · issued Aug 29, 2025
Technical service bulletin
communication type
Unknown OR 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.