Turn Signal Switch

This procedure covers the removal and replacement of the turn signal switch (multifunction switch) on the steering column of a 2025 Rivian EDV 500.

Warnings

Tools required

Parts

• Turn signal switch assembly (multifunction switch) × 1 — Use OEM Rivian specification
• Steering column cover clips (if damaged) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and ensure wheels are pointed straight ahead
2. Apply parking brake firmly
3. Power off vehicle completely using main power button
4. Disconnect 12V auxiliary battery located in front compartment (negative terminal first)
5. Wait minimum 5 minutes for airbag system capacitors to discharge
6. Ensure high voltage isolation is confirmed (vehicle will show no status lights)
7. Adjust steering column to lowest and most forward position for access
8. Take photo of wiring connections before disassembly for reference

Procedure

1. 1

   Remove lower steering column covers
   Using trim panel tools, carefully release the clips securing the lower steering column cover. Start at the bottom rear edge and work around the perimeter. Remove the two T20 Torx screws at the bottom of the lower cover. Gently pull the lower cover away from the column and set aside.
2. 2

   Remove upper steering column cover
   Locate the T20 Torx screws at the top of the upper steering column cover (typically two screws). Remove these screws and carefully release the clips holding the upper cover. Lift the upper cover up and away from the steering column, being careful not to catch any wiring.
3. 3

   Access turn signal switch mounting
   With both column covers removed, locate the turn signal switch assembly on the left side of the steering column. Identify the main electrical connector at the base of the switch assembly. Note the routing of the wiring harness.
4. 4

   Disconnect electrical connector
   Locate the locking tab on the main turn signal switch connector. Using a small flathead screwdriver or electrical connector tool, press the locking tab while gently pulling the connector away from the switch. Do not force the connector. If resistance is felt, verify the locking mechanism is fully released.
5. 5

   Remove switch mounting fasteners
   Locate the two or three T25 Torx screws securing the turn signal switch assembly to the steering column bracket. These are typically on the outboard side of the switch housing. Remove all mounting screws completely and retain for reinstallation.
6. 6

   Release switch from column
   With fasteners removed, gently slide the turn signal switch assembly away from the steering column. There may be a locating tab or guide that requires the switch to be lifted slightly while pulling outward. Do not force the switch as the wiring harness must pass through the column bracket.
7. 7

   Remove old switch assembly
   Carefully guide the wiring harness and connector through any routing clips or brackets on the steering column. Fully remove the old turn signal switch assembly from the vehicle. Inspect the mounting area for any damage or debris and clean if necessary.
8. 8

   Prepare new switch assembly
   Remove the new turn signal switch from packaging and verify it matches the original part. Inspect the electrical connector pins for damage or contamination. Route the wiring harness through your hand to remove any packaging kinks or twists.
9. 9

   Install new switch to column
   Route the wiring harness of the new switch through the steering column bracket following the same path as the original. Position the switch assembly onto the mounting bracket, aligning the locating tabs and screw holes. Ensure the switch lever is in the neutral (center) position.
10. 10

    Secure switch mounting fasteners
    Install the T25 Torx mounting screws through the switch housing into the steering column bracket. Tighten screws in a cross pattern to manufacturer specification. Verify the switch sits flush against the mounting surface and has no excessive play.
11. 11

    Reconnect electrical connector
    Align the electrical connector with the mating connector on the switch assembly. Press firmly until you hear or feel a distinct click indicating the locking tab has engaged. Gently tug on the connector to verify it is fully locked. Ensure wiring is not pinched or stressed.
12. 12

    Verify switch operation mechanically
    Before reinstalling covers, manually move the turn signal lever through all positions (left, right, lane change, high beam, and hazard if integrated). Verify smooth operation with proper detents and return to center. Check that no interference exists with steering column components.
13. 13

    Reinstall steering column covers
    Position the upper steering column cover over the column, ensuring all wiring is clear of pinch points. Press cover clips into place and install T20 Torx screws. Position the lower cover and secure with T20 Torx screws and press clips until fully seated. Verify covers are aligned properly with no gaps.
14. 14

    Reconnect 12V battery
    Reconnect the 12V auxiliary battery in the front compartment (positive terminal first, then negative). Ensure connections are clean and tight. Do not power on the vehicle yet.
15. 15

    Power up and test system
    Power on the vehicle and observe the instrument cluster for any warning lights related to turn signals or lighting systems. Test all turn signal switch functions including left turn, right turn, lane change (partial engagement), high beam, low beam, and hazard lights. Verify proper indicator display on the instrument cluster.

Reassembly

1. Ensure all steering column covers are properly clipped and secured with no rattles
2. Verify all trim panels align correctly with no gaps or misalignment
3. Confirm wiring harness has proper routing with no pinch points or tension
4. Check that steering wheel can be turned lock-to-lock without interference from switch or covers

Verification

• Turn ignition on and verify no warning lights appear on instrument cluster related to lighting or signal systems
• Test left turn signal - verify front and rear indicators flash at correct rate and instrument cluster shows left arrow
• Test right turn signal - verify front and rear indicators flash at correct rate and instrument cluster shows right arrow
• Test lane change function (partial lever engagement) - verify single three-flash sequence works in both directions
• Test high beam function - verify high beams activate and blue indicator appears on cluster
• Test hazard light function - verify all four corners flash simultaneously
• Verify turn signal cancellation works properly when turning steering wheel back to center
• Check for any fault codes using vehicle diagnostics if available
• Road test vehicle to confirm all turn signal functions operate correctly during actual driving conditions

Related trouble codes on this vehicle

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