my Tesla Model Y Current (2020-present) shakes when I brake hard, what's wrong?

Tesla Model Y Current (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

518 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 hard braking in Tesla Model Y. 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 disconnect the battery before working on the brake system to avoid electrical shocks.
•Allow the brakes to cool before handling any components, as they can become very hot during operation.

Symptoms

•Shaking or vibration felt in the steering wheel or brake pedal during hard braking
•Uneven brake wear observed on brake pads or rotors
•Possible noise from the brake system, such as grinding or squeaking
•Potential pulling to one side during braking
•Increased stopping distance

Diagnostic Steps

1
Inspect brake pads and rotors for uneven wear or damage.
2
Check brake rotor thickness using a micrometer to ensure it meets specifications.
3
Examine the brake calipers for sticking or malfunctioning parts.
4
Perform a visual inspection of suspension components, including control arms and bushings.
5
Test drive the vehicle to replicate the shaking and assess severity.

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

•OBD-II scanner
•Socket set
•Torque wrench
•Micrometer
•Brake bleeder kit

Parts Required

•New brake pads
•New brake rotors
•Replacement suspension bushings (if needed)

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Diagnostic Steps

1
Inspect brake pads and rotors for uneven wear or damage.
2
Check brake rotor thickness using a micrometer to ensure it meets specifications.
3
Examine the brake calipers for sticking or malfunctioning parts.
4
Perform a visual inspection of suspension components, including control arms and bushings.
5
Test drive the vehicle to replicate the shaking and assess severity.

Solution

1. Preparation

Gather tools and parts.
Ensure the vehicle is parked on a level surface and the parking brake is engaged.
Disconnect the vehicle's battery to prevent electrical issues during inspection.

2. Inspect and Replace Brake Pads and Rotors

Sub-steps:
1. Remove the wheel using a socket set.
2. Inspect brake pads for wear; replace if they're below the manufacturer’s specified thickness (typically 3mm).
3. Measure the rotor thickness with a micrometer; replace rotors if they are below specifications (usually 24mm for Tesla Model Y).
4. If necessary, remove the brake caliper (using a torque wrench) to access the rotor.
5. Install new rotors and brake pads, ensuring proper alignment.
6. Reattach the caliper and torque to manufacturer specifications.

3. Inspect and Repair Suspension Components

Sub-steps:
1. Visually check control arms, ball joints, and bushings for wear or damage.
2. Replace any damaged bushings or components as needed.
3. Ensure that all bolts are torqued to the manufacturer's specifications.
4. Reassemble any removed parts and reinstall the wheel.

4. Brake System Bleeding

Sub-steps:
1. Reconnect the vehicle's battery.
2. Bleed the brake lines using a brake bleeder kit to remove any air in the brake system.
3. Test the brake pedal feel to ensure proper operation.