why does my Tesla Outback shake when I brake at high speeds?

Subaru Outback 5th Generation (2015-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

587 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 Tesla Outback. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always allow the brake system to cool before working on it.
•Ensure the vehicle is securely supported on jack stands before starting any work.

Symptoms

•Shaking or vibrating feeling in the steering wheel during braking
•Pulsating brake pedal when applying brakes
•Increased stopping distance
•Brake warning light illuminated on the dashboard
•Uneven tire wear

Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator or runout gauge.
2
Check brake pads for even wear and proper thickness using a caliper.
3
Examine suspension components (control arms, bushings, etc.) for wear or damage visually and physically.
4
Inspect wheel lug nut torque to ensure they are properly tightened.
5
Check for any debris or foreign materials on the brake components and in the wheel wells.
6
Test drive the vehicle to replicate the shaking and note specific conditions when it occurs (e.g., speed, road surface).

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 and jack stands
•Socket set
•Torque wrench
•Brake cleaner
•Dial indicator or runout gauge

Parts Required

•New brake rotors
•New brake pads

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Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator or runout gauge.
2
Check brake pads for even wear and proper thickness using a caliper.
3
Examine suspension components (control arms, bushings, etc.) for wear or damage visually and physically.
4
Inspect wheel lug nut torque to ensure they are properly tightened.
5
Check for any debris or foreign materials on the brake components and in the wheel wells.
6
Test drive the vehicle to replicate the shaking and note specific conditions when it occurs (e.g., speed, road surface).

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface, and engage the parking brake.
Disconnect the battery if working on the brake system.

2. Inspect and Replace Brake Rotors

Remove Wheel:
- Use a jack to lift the vehicle and secure it on jack stands.
- Remove the lug nuts with a socket set and take off the wheel.
Remove Brake Caliper:
- Use a wrench to unbolt the caliper from the bracket.
- Hang the caliper using a bungee cord or wire to avoid stress on the brake line.
Remove Brake Rotor:
- Unscrew any retaining screws if applicable.
- Slide off the old rotor.
Install New Rotor:
- Clean the new rotor with brake cleaner to remove any protective coating.
- Slide the new rotor onto the hub and secure it with retaining screws.

3. Replace Brake Pads

Remove Old Brake Pads:
- Take out the caliper bracket bolts.
- Remove the old brake pads from the bracket.
Install New Brake Pads:
- Apply brake grease to the backing of the new pads.
- Place the new pads into the caliper bracket.
Reattach Caliper:
- Reposition the caliper over the new pads and secure it back onto the bracket with bolts.

4. Reassemble and Test

Reattach Wheel:
- Place the wheel back on and hand-tighten the lug nuts.
- Lower the vehicle and torque the lug nuts to manufacturer specifications (usually 80-100 ft-lbs).
Reconnect Battery:
- Reconnect the battery if disconnected.
Test Drive:
- Conduct a test drive to ensure the shaking has been resolved.