my Toyota Highlander Third Generation (2014-2019) is shaking when I brake what could be the issue

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

550 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix shaking during braking in Toyota Highlander 2014-2019. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always use jack stands when working under a vehicle.
•Allow the brake components to cool before handling, as they can become extremely hot.

Symptoms

•Shaking or vibration felt through the steering wheel or brake pedal when braking
•Uneven brake wear on the pads or rotors
•Pulsating brake pedal
•Increased stopping distance
•Possible grinding or squeaking noises during braking

Diagnostic Steps

1
Inspect brake pads for wear and ensure they have sufficient thickness.
2
Check brake rotors for warping or scoring by measuring their thickness and inspecting surface condition.
3
Examine the wheel alignment and balance; check for any play in wheel bearings.
4
Verify the condition of suspension components (e.g., control arms, tie rods) for wear or damage.
5
Scan for any error codes related to the ABS system using an OBD-II scanner.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Jack
•Jack stands
•Lug wrench
•Socket set
•Torque wrench
•Brake rotor tool (if necessary)
•Micrometer (for rotor thickness measurement)

Parts Required

•Brake pads
•Brake rotors (if necessary)

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Diagnostic Steps

1
Inspect brake pads for wear and ensure they have sufficient thickness.
2
Check brake rotors for warping or scoring by measuring their thickness and inspecting surface condition.
3
Examine the wheel alignment and balance; check for any play in wheel bearings.
4
Verify the condition of suspension components (e.g., control arms, tie rods) for wear or damage.
5
Scan for any error codes related to the ABS system using an OBD-II scanner.

Solution

1. Preparation

Gather all necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Wear safety goggles and gloves.

2. Remove Wheel

Tools Required: Jack, jack stands, lug wrench.
Loosen the lug nuts while the vehicle is still on the ground.
Use the jack to lift the vehicle and place jack stands for safety.
Remove the lug nuts and take off the wheel.

3. Inspect and Replace Brake Pads

Tools Required: Socket set, torque wrench.
Inspect the brake pads for wear. If less than 3mm thick, replace them.
Remove the caliper bolts and carefully detach the caliper from the rotor.
Replace the brake pads by sliding them out of the caliper bracket.
Apply brake grease on the backing of the new pads and reassemble the caliper.

4. Check and Resurface or Replace Brake Rotors

Tools Required: Torque wrench, brake rotor tool (if necessary).
Measure the rotor thickness with a micrometer; if below minimum specs, replace the rotor.
If within specs but warped, resurface the rotor using a brake lathe.
Reinstall the rotor onto the hub.

5. Reassemble and Torque Components

Reattach the caliper and secure it with caliper bolts; torque to specification (typically around 25-35 lb-ft).
Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle and tighten the lug nuts to specification (usually 75-85 lb-ft).