Jeep Grand Cherokee 2021–2025 — technical service bulletin
Bulletin S2523000023 · NHTSA communication 11016708 · issued Apr 4, 2025
Technical service bulletin
communication type
Electrical System
component
2021–2025
model years
30
vehicle entries
Official summary
Trailer Tow Lights Inoperative. Diagnostic Trouble Codes (DTCs) B166E-13 B17AD-13 May Be Set.
Vehicles covered
- 2021 Jeep Grand Cherokee
- 2022 Jeep Grand Cherokee
- 2023 Jeep Grand Cherokee
- 2024 Jeep Grand Cherokee
- 2025 Jeep Grand Cherokee
- 2021 Jeep Grand Cherokee 4XE
- 2022 Jeep Grand Cherokee 4XE
- 2023 Jeep Grand Cherokee 4XE
- 2024 Jeep Grand Cherokee 4XE
- 2025 Jeep Grand Cherokee 4XE
- 2021 Jeep Grand Cherokee L
- 2022 Jeep Grand Cherokee L
- 2023 Jeep Grand Cherokee L
- 2024 Jeep Grand Cherokee L
- 2025 Jeep Grand Cherokee L
- 2022 Jeep Grand Wagoneer
- 2023 Jeep Grand Wagoneer
- 2024 Jeep Grand Wagoneer
- 2025 Jeep Grand Wagoneer
- 2022 Jeep Wagoneer
- 2023 Jeep Wagoneer
- 2024 Jeep Wagoneer
- 2025 Jeep Wagoneer
- 2024 Jeep Wagoneer S
- 2025 Jeep Wagoneer S
- 2025 RAM 1500
- 2025 RAM 2500
- 2025 RAM 3500
- 2025 RAM 4500
- 2025 RAM 5500
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.