why does my Toyota Highlander Fourth Generation (2020-present) brake warning light keep coming on

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and engage the parking brake.
• Disconnect the battery to ensure safety while working on the braking system.

2. Check Brake Fluid Level

• Locate the brake fluid reservoir.
• Remove the cap and inspect the fluid level; add brake fluid if low (use DOT 3 or DOT 4 fluid as specified).

3. Inspect and Replace Brake Pads and Rotors (if worn)

• Remove the wheel using a socket set.
• Inspect brake pads for thickness; if below 3mm, replace them.
• Check rotors for scoring or excessive wear; replace if necessary.
• Remove caliper bolts, detach the caliper, and replace pads and rotors as needed, ensuring proper alignment.
• Reinstall the caliper and torque bolts to the manufacturer’s specifications.

4. Bleed the Brake System

• Reconnect the brake fluid reservoir cap.
• Use a brake bleeder kit or a helper to bleed each brake line, starting from the farthest wheel from the master cylinder.
• Ensure fluid flows without bubbles, then tighten the bleeder valve.

5. Reconnect Battery and Test

• Reconnect the vehicle battery.
• Start the vehicle and check if the brake warning light remains off after a few moments.
• Perform a test drive to ensure normal braking performance.