how to fix the cruise control not working in Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

450 words

Problem Statement

Learn how to diagnose and fix cruise control issues in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical components.
•Ensure the vehicle is in 'Park' mode while diagnosing or repairing.

Symptoms

•Cruise control indicator light not illuminating
•Inability to set or maintain speed with cruise control
•Intermittent functioning of cruise control
•Error messages related to cruise control on the display
•Unresponsive cruise control stalk

Diagnostic Steps

1
Check the vehicle's software version and ensure it is updated to the latest version.
2
Inspect the cruise control stalk for physical damage or wear.
3
Scan for error codes using the Tesla service menu.
4
Verify that the brake lights are functioning properly, as they can affect cruise control operation.
5
Check for any other active alerts or warning messages on the vehicle's screen.

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

•Torx screwdriver set
•Trim removal tools
•OBD-II scanner

Parts Required

•New cruise control stalk
•Brake light bulbs
•Brake light switch

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Diagnostic Steps

1
Check the vehicle's software version and ensure it is updated to the latest version.
2
Inspect the cruise control stalk for physical damage or wear.
3
Scan for error codes using the Tesla service menu.
4
Verify that the brake lights are functioning properly, as they can affect cruise control operation.
5
Check for any other active alerts or warning messages on the vehicle's screen.

Solution

1. Software Update

Sub-steps:
1. Connect the vehicle to Wi-Fi.
2. Navigate to the software update section in the menu.
3. Follow the prompts to download and install any available updates.

2. Inspect and Replace Cruise Control Stalk

Sub-steps:
1. Disconnect the 12V battery to ensure safety.
2. Remove the steering wheel cover to access the cruise control stalk.
  - Tools Required: Torx screwdriver set, trim removal tools.
3. Disconnect the wiring harness from the cruise control stalk.
4. Remove the stalk from the steering column.
5. Install the new cruise control stalk by reversing the removal steps.
6. Reconnect the 12V battery and test the cruise control function.

3. Brake Light Inspection

Sub-steps:
1. Turn on the vehicle and check if the brake lights illuminate when pressing the brake pedal.
2. If the brake lights do not function, inspect and replace the brake light bulbs or the brake light switch.
3. Follow the vehicle manual for specific instructions on accessing and replacing the brake light switch.