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how to fix Tesla Model S Original (2012-2020) seat heater not working - Tesla Model S
Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/how to fix Tesla Model S Original (2012-2020) seat heater not working

how to fix Tesla Model S Original (2012-2020) seat heater not working

Tesla Model S Plaid/Refresh (2021-present)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
537 words

Problem Statement

Learn how to diagnose and fix the seat heater not working in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Electrical
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the vehicle's 12V battery before working on electrical systems.
  • •Allow the vehicle to cool down before working on any heated components.

Symptoms

  • •Seat heater indicator light does not illuminate
  • •No heat generated from the seat cushion or backrest
  • •Error message displayed on the touchscreen regarding seat heater malfunction
  • •Other seat functions (e.g., adjustments) operate normally
  • •Increased resistance when activating the seat heater

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

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
  • •Multimeter
  • •Socket set
  • •Screwdrivers

Parts Required

  • •Seat heater element (if replacement is necessary)

Additional Information

Affected Component
Electrical
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
1 item

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Solution
1. Preparation
  • Gather tools: OBD-II scanner, multimeter, socket set, and screwdrivers.
  • Disconnect the vehicle’s 12V battery to ensure safety while working on electrical components.
2. Accessing the Seat Heater Components
  • Remove the seat from the vehicle:
    1. Locate and remove the bolts securing the seat to the floor using a socket set.
    2. Disconnect the electrical connectors under the seat.
    3. Carefully lift the seat out of the vehicle and place it on a soft surface.
3. Inspect and Repair

  • Check the seat heater wiring:

    1. Visually inspect the wiring harness for frays, cuts, or loose connections.
    2. Repair or replace any damaged wiring as necessary.

  • Test the seat heater element:

    1. Remove the seat cover to access the seat heater element.
    2. Use a multimeter to check for continuity in the heating element. If there is no continuity, the element must be replaced.
4. Replace the Seat Heater Element (if necessary)
  • If the heater element is faulty:
    1. Disconnect the faulty heater element from the wiring harness.
    2. Remove the old heating element and replace it with a new one.
    3. Reconnect the wiring harness to the new heater element.
5. Reassemble the Seat
  • Reattach the seat cover securely.
  • Reinstall the seat back into the vehicle:
    1. Reconnect the electrical connectors.
    2. Secure the seat to the floor with the bolts removed earlier.
6. Final Checks
  • Reconnect the vehicle’s 12V battery.
  • Turn on the vehicle and test the seat heater for proper operation.