why do I feel a pulsating sensation while braking in my Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

536 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 pulsating brake sensation in Tesla Model S (2012-2020). 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

•Disconnect the battery before working on electrical systems.
•Allow the vehicle to cool before handling brake components.

Symptoms

•Pulsating brake pedal during braking
•Vibration in the steering wheel when applying brakes
•Uneven braking performance
•Increased braking distance
•Possible warning light on the dashboard

Diagnostic Steps

1
Inspect brake pads for wear and unevenness.
2
Check brake rotors for warping or surface damage.
3
Examine brake calipers for proper operation and signs of sticking.
4
Test brake fluid for contamination or moisture content.
5
Scan the vehicle's onboard computer for any error codes related to the braking system.

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

•Socket set
•Jack stands
•Dial indicator
•Micrometer
•Rotor resurfacing tool
•Wrench set
•Caliper grease
•Brake fluid extractor
•Torque wrench

Parts Required

•Brake pads
•Brake rotors
•Brake calipers (if needed)
•Brake fluid

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect brake pads for wear and unevenness.
2
Check brake rotors for warping or surface damage.
3
Examine brake calipers for proper operation and signs of sticking.
4
Test brake fluid for contamination or moisture content.
5
Scan the vehicle's onboard computer for any error codes related to the braking system.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the parking brake is engaged.
Disconnect the negative battery terminal to ensure safety.

2. Inspect Brake Pads

Sub-steps:
- Remove the wheel using a socket set.
- Visually inspect brake pads for uneven wear; replace if worn below manufacturer specifications (typically 3mm).
Tools Required: Socket set, jack stands.

3. Check Brake Rotors

Sub-steps:
- Measure rotor thickness with a micrometer; ensure it meets manufacturer specifications.
- Use a dial indicator to check for warping; if warping exceeds 0.002 inches, replace the rotor.
- If the rotor is within specifications but has surface imperfections, resurface the rotor.
Tools Required: Dial indicator, micrometer, rotor resurfacing tool.

4. Inspect Brake Calipers

Sub-steps:
- Remove the caliper from the mounting bracket.
- Check for signs of corrosion or sticking; lubricate or replace as necessary.
- Ensure the caliper slides freely on the pins.
Tools Required: Wrench set, caliper grease.

5. Replace Components

Sub-steps:
- If any components (pads, rotors, calipers) need replacement, install new parts following manufacturer guidelines.
- Reassemble the caliper and wheel and ensure all fasteners are torqued to specification (consult service manual for torque values).

6. Brake Fluid Check and Replacement

Sub-steps:
- Inspect brake fluid for clarity; if cloudy or dark, replace the fluid.
- Use a brake fluid extractor to remove old fluid from the reservoir.
- Refill with manufacturer-recommended brake fluid (e.g., DOT 3 or DOT 4).
Tools Required: Brake fluid extractor, funnel.