Jeep Grand Cherokee 2021–2027 — technical service bulletin
Bulletin 9100826 · NHTSA communication 11033885 · issued Jun 1, 2026
Technical service bulletin
communication type
Structure
component
2021–2027
model years
17
vehicle entries
Official summary
WL DDM/PDM Mirror Blindspot inoperative If DTC is present DTC B285F-15 Blind Spot Warning Light Control-Circuit Short to Battery or Open Before replacing DDM/PDM. Inspect connection on Mirror connector end. Perform electrical continuity test. After succesful continuity test. Via Witech perform hard reset and clear DTC.
Vehicles covered
- 2021 Jeep Grand Cherokee
- 2022 Jeep Grand Cherokee
- 2023 Jeep Grand Cherokee
- 2024 Jeep Grand Cherokee
- 2026 Jeep Grand Cherokee
- 2027 Jeep Grand Cherokee
- 2021 Jeep Grand Cherokee 4XE
- 2022 Jeep Grand Cherokee 4XE
- 2023 Jeep Grand Cherokee 4XE
- 2024 Jeep Grand Cherokee 4XE
- 2026 Jeep Grand Cherokee 4XE
- 2021 Jeep Grand Cherokee L
- 2022 Jeep Grand Cherokee L
- 2023 Jeep Grand Cherokee L
- 2024 Jeep Grand Cherokee L
- 2026 Jeep Grand Cherokee L
- 2027 Jeep Grand Cherokee L
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.