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Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/how to troubleshoot my Tesla Model S Original (2012-2020) forward collision warning issues

how to troubleshoot my Tesla Model S Original (2012-2020) forward collision warning issues

Tesla Model S Plaid/Refresh (2021-present)

Severity: highDifficulty: medium1-2 hours
3 min read
551 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 troubleshoot and fix forward collision warning issues in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Component
Electrical
Repair Time
1-2 hours

Safety Warnings

  • ⚠Ensure the vehicle is powered off before cleaning sensors.
  • ⚠Ensure the vehicle remains stationary during software updates.
  • ⚠Conduct calibration in a safe, open area away from traffic.
  • ⚠Disconnect the battery before handling wiring.

Symptoms

  • •Forward collision warning light not illuminating when expected
  • •Warning alerts sounding inconsistently
  • •Reduced Autopilot functionality
  • •Sensor obstruction warning displayed on the dashboard
  • •Erratic or false collision alerts

Diagnostic Steps

  1. 1Use the Tesla diagnostic tool to check for error codes related to the forward collision warning system.
  2. 2Inspect the front radar sensor for physical obstructions (dirt, debris, ice).
  3. 3Ensure the cameras and sensors are clean and unobstructed.
  4. 4Check for software updates in the vehicle's settings and install if available.
  5. 5Review the vehicle's calibration status for the forward collision warning system.
  6. 6Examine the wiring and connections to the forward collision warning system components for damage or corrosion.

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Ensure the vehicle is parked on a level surface and the ignition is off.
  • Disconnect the 12V battery to prevent accidental short circuits during repairs.

2. Clean Sensors

  • Sub-steps:
    1. Locate the front radar and camera systems.
    2. Use a microfiber cloth and appropriate automotive cleaner to gently wipe the radar sensor and cameras.
    3. Ensure no residue is left that could obstruct sensor functionality.
  • Tools Required: Microfiber cloth, automotive cleaner.
  • Safety Warnings: Ensure the vehicle is powered off before cleaning sensors.

3. Check for Software Updates

  • Sub-steps:
    1. Power on the vehicle and navigate to the software settings.
    2. Check for any available updates.
    3. If updates are available, follow prompts to install them.
  • Tools Required: None.
  • Safety Warnings: Ensure the vehicle remains stationary during software updates.

4. Recalibrate Sensors

  • Sub-steps:
    1. Navigate to the vehicle settings and find the camera calibration option.
    2. Follow the on-screen instructions to recalibrate the forward collision warning system.
    3. Perform a test drive in a safe area to verify functionality.
  • Tools Required: None.
  • Safety Warnings: Conduct calibration in a safe, open area away from traffic.

5. Inspect Wiring and Connections

  • Sub-steps:
    1. Remove any panels covering the radar and sensors.
    2. Visually inspect the wiring for signs of wear, fraying, or corrosion.
    3. Clean any corroded connections with electrical contact cleaner and reconnect securely.
  • Tools Required: Electrical contact cleaner, small socket set for panel removal.
  • Safety Warnings: Disconnect the battery before handling wiring.

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

  • Microfiber cloth
  • Automotive cleaner
  • Electrical contact cleaner
  • Small socket set

Parts Required

  • None required unless physical damage is found.

Additional Information

Component

Electrical

Repair Time

1-2 hours

Difficulty

medium

Severity

high

Tools

4 items

Parts

1 items

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