Tesla Model X: Heater - Front PTC (Remove and Replace)

Warning: Only technicians who have been trained in High Voltage Awareness are permitted to perform this procedure. Proper personal protective equipment (PPE) and insulating HV gloves with a minimum rating of class 00 (500V) must be worn any time a high voltage cable is handled. Refer to Tech Note TN-15-92-003, "High Voltage Awareness Care Points" for additional safety information. Removal

1. Open the hood.
2. Open both front doors and windows.
3. Move the passenger seat rearward for access.
4. Remove the cowl screen panel (refer to procedure).
5. Perform the electrical isolation procedure (refer to procedure).
6. Disconnect the PTC heater HV cable connector from the forward junction box (FJB).

    

7. Push the HV cable grommet through the bulkhead towards the interior of the vehicle.

    

8. Remove the front passenger's knee air bag (refer to procedure).
9. Remove the passenger's knee air bag bracket:
   1. Remove the screws (x3) that secure the front of the bracket to the instrument panel (torque 2.3 Nm).

       

   2. Remove the bolts (x2) that secure the LH side of the bracket to the instrument panel (torque 6 Nm).

       

   3. Remove the bolts (x3) that secure the rear of the bracket to the instrument panel (torque 6 Nm).

      Note: Components have been removed in this graphic to aid clarity.

       

10. Release the passenger footwell duct from the instrument panel.
11. Release the HV cable from the retaining clips on the HVAC assembly.
12. Carefully pull the HV cable through the bulkhead into the cabin of the vehicle.

     

13. Remove the screws (x3) that secure the PTC heater to the front HVAC assembly (torque 1.2 Nm).

    Note: Components have been removed in this graphic to aid clarity.

     

14. Disconnect the electrical connector from the PTC heater.

    Note: Components have been removed in this graphic to aid clarity.

     

15. Pull the PTC heater away from the HVAC assembly and remove it from the vehicle.

Installation procedure is the reverse of removal, except for the following:

Caution: Replace all Patchbolt(s).

• Clean the interior of the HVAC casing prior to assembly.
• Use Toolbox to update or redeploy the firmware.