Replace the brake light switch located on the brake pedal assembly to restore proper brake light operation and cruise control function.

Warnings

Tools required

Parts

• Brake light switch × 1 — Toyota 84340-06070 or equivalent

Preparation

1. Park vehicle on level surface and engage parking brake
2. Turn ignition to OFF position and remove key from ignition
3. Open driver's door fully for access and turn on interior lights
4. Optionally disconnect negative battery terminal if concerned about electrical shorts (not required for this procedure)
5. Position flashlight or work light to illuminate area above brake pedal under dashboard

Procedure

1. 1

   Access brake pedal assembly
   Sit in driver's seat or kneel outside with upper body inside vehicle. Look up under the dashboard above the brake pedal. Locate the brake light switch mounted on a bracket at the top of the brake pedal arm. The switch is a small plastic component with an electrical connector and plunger that contacts the pedal arm.
2. 2

   Disconnect electrical connector
   Locate the electrical connector on the brake light switch. Press the release tab on the connector while pulling it straight away from the switch. You may need to use a small flathead screwdriver to depress the locking tab. The connector should release with moderate force.
3. 3

   Remove old brake light switch
   The switch is held by a twist-lock mechanism. Rotate the switch body counterclockwise approximately 30-45 degrees while pulling outward from the mounting bracket. The switch should release from the bracket. If the switch has a threaded design, unscrew it counterclockwise by hand. Note the position and orientation of the switch for installation of the new part.
4. 4

   Inspect mounting bracket and pedal stop pad
   Examine the mounting bracket for cracks or damage. Check the brake pedal stop pad (small rubber bumper on pedal arm) for wear or missing pieces. This pad must be present and in good condition for the switch to function correctly. Replace pad if damaged or missing before installing new switch.
5. 5

   Install new brake light switch
   Insert the new brake light switch into the mounting bracket with the plunger facing toward the brake pedal arm contact point. If twist-lock style, push in firmly and rotate clockwise 30-45 degrees until it locks into place. If threaded style, thread clockwise by hand until snug against bracket. Do not overtighten. Ensure the switch plunger is fully extended and will contact the pedal stop pad when pedal is released.
6. 6

   Reconnect electrical connector
   Push the electrical connector onto the brake light switch terminals until it clicks into place. Tug gently on the connector to verify it is fully seated and locked. Ensure wiring is not pinched or stressed.
7. 7

   Test brake light operation
   Turn ignition to ON position (engine does not need to start). Have an assistant observe rear brake lights or position a reflective surface behind vehicle. Press brake pedal slowly and verify brake lights illuminate immediately. Release pedal and verify lights turn off. Repeat test 5-10 times to confirm consistent operation. Test both the center high-mount brake light and left/right brake lights.

Reassembly

1. No disassembly was required for this procedure
2. Ensure all electrical connections are secure and wiring is routed properly without interference with pedal operation

Verification

• With ignition ON, verify brake lights illuminate immediately when brake pedal is pressed and turn off when pedal is released
• Test brake lights with vehicle running to confirm operation under all electrical load conditions
• Verify cruise control can be set and cancels when brake pedal is pressed (if vehicle is equipped with cruise control)
• Check that brake pedal returns fully to rest position without binding on switch or wiring
• Confirm no dashboard warning lights related to brake system are illuminated
• Road test vehicle in safe area to verify brake lights function during actual driving before operating on public roads

More procedures for this vehicle