Tesla Model S: Module - Passive Safety Restraint - PSRCM (Remove and Replace)

Warning: If the 12V power supply is disconnected, do not attempt to open any doors with door glass in closed position. Failure to follow this instruction could result in door glass shatter.

Note: Before disconnecting the 12V power supply, ensure that the driver's door window is fully open. Failure to follow this instruction could result in vehicle lockout.

Removal

1. Disconnect 12V power.
   • Rear wheel drive (RWD): Refer to procedure.
   • Dual Motor: Refer to procedure.
2. Remove the active suspension ECU for access (refer to procedure).
3. Remove the T30 Torx bolts (x3) that secure the passive safety restraint control module (PSRCM) to the body (torque 8 Nm).

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

   

4. Disconnect the harness connectors (x2):

   Note: The following substeps only show the driver's side harness connector. Perform steps 4a-4c on both harness connectors.

   1. Carefully use a small flathead screwdriver to push the black tab away from the PSRCM.

      Caution: The tab can detach from the connector and become lost if excessive pressure is applied. Do not apply excessive pressure when pushing the black tab away from the PSRCM.

      

   2. Press and hold down the red tab.

      

   3. While continuing to hold down the red tab, unlatch the connector.

      

5. Remove the PSRCM from the vehicle.

   

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

1. Flash the PSRCM module:
   1. Connect a laptop with Toolbox 2.0 or later to the vehicle. Note: It is necessary to connect both the diagnostic cable and the chassis CAN cable.
   2. In Toolbox, select Panels > Restraint System > Airbag Program.
   3. Click the Run button.
   4. Follow the onscreen instructions and click Finish when finished.
2. Sit in the driver's seat. Step on the brake pedal to turn on the drive rail to cycle the power on the vehicle.
3. Ensure that the airbag safety indicator light displays on the instrument cluster during vehicle startup and then turns off after 6 seconds.

   

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