my Tesla Model S Original (2012-2020) is making a knocking noise

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

533 words

Problem Statement

Learn how to diagnose and fix knocking noise in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Suspension

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical systems.
•Allow the vehicle to cool before inspecting brake components.

Symptoms

•Knocking noise during acceleration or deceleration
•Vibration felt through the steering wheel or floor
•Possible loss of power during driving
•Unusual sounds when turning the steering wheel
•Check battery or maintenance warning lights illuminated

Diagnostic Steps

1
Inspect the front and rear suspension components for wear or damage.
2
Check the drivetrain and motor mounts for signs of failure.
3
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs).
4
Examine the brake system for any loose components or worn parts.
5
Test drive the vehicle at various speeds to isolate noise location and condition.
6
Inspect the tires for uneven wear or damage.

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
•Brake caliper tool
•Pry bar
•Jack stands

Parts Required

•Suspension bushings or control arms (if worn)
•Motor mounts (if damaged)
•Brake pads (if worn)
•Tires (if damaged or uneven)

Related Faults

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Diagnostic Steps

1
Inspect the front and rear suspension components for wear or damage.
2
Check the drivetrain and motor mounts for signs of failure.
3
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs).
4
Examine the brake system for any loose components or worn parts.
5
Test drive the vehicle at various speeds to isolate noise location and condition.
6
Inspect the tires for uneven wear or damage.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface and engage the parking brake.
Disconnect the 12V battery to avoid electric shock during repairs.

2. Inspect and Replace Suspension Components

Tools Required: Socket set, torque wrench, pry bar, jack stands.
Sub-steps:
1. Lift the vehicle using a jack and secure it with jack stands.
2. Remove the wheels to access suspension components.
3. Inspect control arms, struts, and bushings for wear or damage.
4. Replace any worn components with OEM or high-quality aftermarket parts.
5. Torque bolts to the manufacturer's specifications.

3. Check Drivetrain and Motor Mounts

Tools Required: Torque wrench, socket set.
Sub-steps:
1. Locate the motor mounts and inspect for cracks or excessive wear.
2. If defective, remove the old mounts and install new ones.
3. Torque all mounting bolts to the specified torque ratings.

4. Inspect Brake System

Tools Required: Brake caliper tool, socket set.
Sub-steps:
1. Inspect brake calipers and pads for tightness and wear.
2. Ensure all caliper bolts are tightened to spec.
3. Replace any worn brake pads or components.

5. Tire Inspection and Rotation

Tools Required: Tire iron, torque wrench.
Sub-steps:
1. Inspect all tires for uneven wear or damage.
2. Rotate tires if necessary, following the manufacturer's recommended pattern.
3. Ensure lug nuts are torqued to the specified value after installation.