Turn Signal Bulb - Front

This procedure covers the replacement of the front turn signal bulb on a 2025 Rivian EDV 500, which requires removal of the front headlight assembly to access the bulb housing.

Warnings

Tools required

Parts

• Front turn signal bulb × 1 — Use OEM Rivian LED module or approved equivalent
• Headlight assembly seal (if damaged) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Turn off all vehicle systems and remove key fob from cabin
3. Allow headlight assembly to cool completely if vehicle was recently driven (minimum 30 minutes)
4. Open front cargo area (frunk) to access battery disconnect
5. Disconnect 12V battery negative terminal and wait 2 minutes for system capacitors to discharge
6. Identify which side (driver or passenger) requires bulb replacement
7. Gather all necessary tools and replacement bulb/LED module

Procedure

1. 1

   Access front wheel well liner
   Turn steering wheel fully to the opposite side of the bulb being replaced (turn right if replacing left bulb, left if replacing right bulb). This provides better access to the wheel well liner and headlight assembly mounting points.
2. 2

   Remove wheel well liner fasteners
   Locate the front section of the wheel well liner behind the front bumper. Remove the T25 Torx screws (typically 3-4) securing the forward portion of the wheel well liner. Carefully pull the liner back to expose the rear of the headlight assembly. You may need to remove additional plastic push clips using the trim removal tool.
3. 3

   Disconnect headlight assembly electrical connector
   Reach behind the headlight assembly and locate the main electrical connector. Press the release tab and carefully pull the connector straight back to disconnect it. Note the connector orientation for reassembly. There may be multiple connectors on the headlight assembly; identify the turn signal module connector specifically.
4. 4

   Remove headlight assembly mounting fasteners
   Locate the headlight assembly mounting bolts accessible from behind through the wheel well opening. Remove the T30 Torx bolts (typically 2-3 bolts) securing the headlight assembly to the body. There may be an additional 8mm bolt at the top of the assembly accessible from the frunk area. Support the headlight assembly while removing the final fastener.
5. 5

   Remove headlight assembly
   Carefully pull the headlight assembly forward and away from the vehicle body. The assembly may have locating tabs that require slight angling to release. Work slowly to avoid damaging any remaining wiring or clips. Place the assembly on a clean, padded surface with the rear facing up.
6. 6

   Access turn signal bulb housing
   With the headlight assembly removed and inverted, locate the turn signal bulb housing on the rear of the assembly. It will be marked with an amber or yellow identifier, typically positioned at the outer edge of the assembly. The housing will have a circular or rectangular access cover.
7. 7

   Remove turn signal bulb/module cover
   Rotate the turn signal bulb access cover counterclockwise approximately 1/4 turn (90 degrees) to unlock it. If equipped with a rectangular LED module, there may be a release tab instead. Press the tab and pull the cover straight back. Set the cover aside in a clean location.
8. 8

   Remove failed turn signal bulb
   Put on clean nitrile gloves. Grasp the turn signal bulb or LED module firmly and pull straight out from the socket. If resistance is felt, gently rock the bulb side-to-side while pulling. Do not twist traditional bulbs during removal. For LED modules, there may be a locking clip that must be depressed before removal.
9. 9

   Inspect bulb socket and housing
   Examine the bulb socket for any signs of corrosion, melting, or damage. Check the electrical contacts inside the socket for burn marks or deformation. If any damage is present, the entire socket assembly may need replacement. Wipe the socket clean with a dry microfiber cloth if dust or debris is present.
10. 10

    Install new turn signal bulb
    While wearing clean gloves, remove the new turn signal bulb/LED module from its packaging without touching the glass or LED surface. Align the bulb pins or LED module connector with the socket, ensuring proper orientation (alignment tabs will only allow one position). Push the bulb straight into the socket until it seats completely and locks in place.
11. 11

    Reinstall bulb access cover
    Place the access cover back onto the turn signal housing, aligning any tabs or guides. For twist-lock covers, rotate clockwise approximately 1/4 turn until it locks. For clip-style covers, press firmly until the locking tab clicks into place. Verify the cover is fully seated and secure.
12. 12

    Test turn signal function (preliminary)
    Before reinstalling the headlight assembly, reconnect the 12V battery negative terminal temporarily. Turn on the vehicle ignition and test the turn signal function to verify the new bulb is working properly. Check that the bulb illuminates with the correct amber color and proper brightness. Disconnect the battery again before proceeding with reassembly.
13. 13

    Reinstall headlight assembly
    Position the headlight assembly back into its mounting location, carefully aligning the locating tabs with their corresponding slots in the body. Ensure no wiring is pinched behind the assembly. Install the mounting bolts finger-tight initially, then tighten evenly to secure the assembly. Work from the top bolt down to ensure proper alignment.
14. 14

    Reconnect electrical connectors
    Reconnect the main headlight electrical connector, pushing firmly until the locking tab clicks into place. Verify all other disconnected connectors (if any) are properly reattached. Give each connector a gentle tug to confirm it is locked.
15. 15

    Reinstall wheel well liner
    Position the wheel well liner back into place, ensuring all edges are properly aligned with the body panels. Reinstall all T25 Torx screws and push clips in reverse order of removal. Ensure the liner is secure and does not rub against the tire during steering movement.

Reassembly

1. Ensure all fasteners are tightened securely but do not over-torque plastic components
2. Verify no tools or parts are left in the frunk or wheel well area
3. Reconnect the 12V battery negative terminal securely
4. Close the frunk and ensure it latches properly
5. Return steering wheel to center position

Verification

• Turn vehicle to ON position and activate turn signals to verify proper operation
• Confirm the new turn signal bulb illuminates with correct amber color and proper brightness
• Check that turn signal operates at correct flash rate (not rapid flash indicating bulb failure)
• Verify all other headlight functions (low beam, high beam, DRL) still operate normally
• Walk around vehicle and visually inspect headlight assembly alignment and fitment
• Test turn signals with vehicle in both park and drive modes
• Check for any error messages on instrument cluster related to exterior lighting

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →

More procedures for this vehicle