RAM 1500 2019–2025 — technical service bulletin
Bulletin 9003980 · NHTSA communication 11013232 · issued Jan 28, 2025
Technical service bulletin
communication type
Electrical System
component
2019–2025
model years
35
vehicle entries
Official summary
SWITCH Headlamp Before replacing the Headlamp Switch for faulty dimmer operation. Please follow the next steps to corroborate if the Headlamp Switch is malfunctioning: 1.- Please disconnect and reconnect the headlamp Switch. And verify if the issue is corrected. 2.- Review the internal resistance of the switch: a.- For the Right Dimmer (IP) between Pins 6 & 3. The value should be around 5.74 KOhms, when in the lowest position to 311 ohms in the top position (Parade Detent). b.- For the left Dimmer (Ambient Light) between pins 8 & 3. The value should be around 14.52 KOhms, when in the lowest po
Vehicles covered
- 2019 RAM 1500
- 2020 RAM 1500
- 2021 RAM 1500
- 2022 RAM 1500
- 2023 RAM 1500
- 2024 RAM 1500
- 2025 RAM 1500
- 2019 RAM 2500
- 2020 RAM 2500
- 2021 RAM 2500
- 2022 RAM 2500
- 2023 RAM 2500
- 2024 RAM 2500
- 2025 RAM 2500
- 2019 RAM 3500
- 2020 RAM 3500
- 2021 RAM 3500
- 2022 RAM 3500
- 2023 RAM 3500
- 2024 RAM 3500
- 2025 RAM 3500
- 2019 RAM 4500
- 2020 RAM 4500
- 2021 RAM 4500
- 2022 RAM 4500
- 2023 RAM 4500
- 2024 RAM 4500
- 2025 RAM 4500
- 2019 RAM 5500
- 2020 RAM 5500
- 2021 RAM 5500
- 2022 RAM 5500
- 2023 RAM 5500
- 2024 RAM 5500
- 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.