Replace the brake light switch on a 2024 Rivian EDV 500, which signals brake pedal activation to illuminate brake lights and release the electronic parking brake.

Warnings

Tools required

Parts

• Brake light switch × 1 — Use OEM Rivian specification
• Electrical connector grease (dielectric) × 1 — Use OEM specification

Preparation

1. Park vehicle on level ground and apply electronic parking brake
2. Place wheel chocks behind rear wheels
3. Perform Rivian vehicle shutdown sequence via center display: Settings > Vehicle > Power Off
4. Wait 5 minutes for all vehicle systems to enter sleep mode
5. Open front trunk (frunk) and disconnect 12V battery negative terminal
6. Wait an additional 3 minutes for capacitor discharge
7. Adjust driver's seat to full rearward position for pedal access
8. Remove driver's side lower dash trim panel using trim removal tools

Procedure

1. 1

   Remove lower steering column cover
   Locate and remove the lower steering column cover by removing three T25 Torx screws. Gently pull the cover downward to release the retention clips. Disconnect any electrical connectors for steering column switches if present on your trim level. Set cover aside in a safe location.
2. 2

   Access brake pedal assembly area
   Using a flashlight, locate the brake pedal assembly mounting bracket. The brake light switch is mounted on the upper portion of the brake pedal arm, near the pivot point. Use a shop mirror or inspection camera to verify switch location and connector orientation before proceeding.
3. 3

   Document existing switch position
   Before removal, carefully note the exact position and orientation of the existing brake light switch. Take photos from multiple angles showing switch alignment, connector orientation, and the relationship to the brake pedal position sensor. This documentation is critical for proper installation.
4. 4

   Disconnect brake light switch electrical connector
   Locate the electrical connector on the brake light switch. Press the locking tab and carefully pull the connector straight away from the switch. If connector is difficult to access, use a small flathead screwdriver to gently depress the locking tab. Do not pull on wires.
5. 5

   Test existing switch (diagnostic step)
   Using a multimeter set to continuity mode, test the removed switch by pressing the plunger. The switch should show continuity when depressed and no continuity when released. This confirms the switch failure and validates the repair. Document results.
6. 6

   Remove brake light switch mounting hardware
   The brake light switch is secured by a rotating collar or lock nut. Rotate the switch counterclockwise approximately 1/4 turn to unlock it from the mounting bracket. Carefully pull the switch straight out from the bracket, taking care not to damage the mounting threads or surrounding components.
7. 7

   Inspect mounting bracket and pedal arm
   Examine the switch mounting bracket for cracks, damage, or deformation. Inspect the pedal arm contact point where the switch plunger engages. Clean any debris or contamination from the mounting area using a clean, dry cloth. Verify the pedal returns freely to the rest position.
8. 8

   Prepare new brake light switch
   Remove the new brake light switch from packaging. Compare it to the old switch to verify it is identical in design and connector type. Apply a small amount of dielectric grease to the electrical connector pins on the new switch to ensure proper contact and corrosion resistance.
9. 9

   Install new brake light switch
   Insert the new brake light switch into the mounting bracket, ensuring the plunger contacts the brake pedal arm correctly. The plunger should be compressed approximately 1-3mm when the brake pedal is at rest. Rotate the switch clockwise 1/4 turn to lock it into position. Verify the switch is fully seated and secure.
10. 10

    Adjust switch position (critical step)
    The brake light switch must be positioned so that brake lights activate within 5-10mm of pedal travel. Verify the plunger is lightly preloaded against the pedal arm. If adjustment is needed, unlock the switch, reposition it slightly inward or outward, and re-lock. The pedal should not be held in a depressed position by the switch.
11. 11

    Reconnect electrical connector
    Align the electrical connector with the new brake light switch and push firmly until you hear and feel a positive click. Gently tug on the connector to verify it is fully locked. Ensure no wires are pinched or strained.
12. 12

    Reinstall steering column cover and trim
    Reconnect any electrical connectors for steering column switches. Position the lower steering column cover and align the retention clips. Press firmly to engage clips, then install the three T25 Torx screws. Reinstall the lower dash trim panel using trim clips.
13. 13

    Reconnect 12V battery and initialize vehicle
    Reconnect the 12V battery negative terminal in the frunk. Close frunk securely. Enter the vehicle and press the brake pedal to wake the vehicle systems. The vehicle will perform self-diagnostics, which may take 30-60 seconds.
14. 14

    Clear fault codes and verify operation
    Connect the Rivian diagnostic tool or OBD-II scanner. Clear any brake light switch-related fault codes. Navigate to the brake system monitoring section and verify the brake light switch shows proper status transitions (OFF when pedal released, ON when pedal depressed). Verify no new fault codes are present.

Reassembly

1. Ensure all trim panels are fully seated with no gaps or loose clips
2. Return driver's seat to normal position
3. Verify all dashboard warning lights extinguish after vehicle initialization completes
4. If any warning lights remain illuminated, investigate before operating vehicle

Verification

• With vehicle in Park and parking brake engaged, press brake pedal and verify brake lights illuminate (use assistant or position mirror to check)
• Release brake pedal and verify brake lights extinguish immediately
• Test electronic parking brake release function: press brake pedal and release parking brake via center console - should release smoothly
• Verify adaptive cruise control and driver assist features re-enable properly (if equipped)
• Test brake light activation point: lights should illuminate within first 5-10mm of pedal travel
• Using diagnostic tool, verify brake light switch shows correct status in vehicle monitoring data
• Perform a low-speed test drive in a safe area to confirm brake lights function normally during actual braking
• Check for any new warning messages or fault codes after test drive
• If vehicle exhibits ANY abnormal brake behavior, electronic parking brake issues, or warning lights, do not drive - seek immediate professional service

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