Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Contactor - Positive - HV Battery-Remove

Tesla Model 3 2017-2024 Service Manual / Battery System / HV Battery Electrical Components / Contactor - Positive - HV Battery (Remove and Replace) / Contactor - Positive - HV Battery-Remove

Contactor - Positive - HV Battery (Remove and Replace)

SPECIAL TOOLS

Ratchet, 1/4" Sq Dr, HV Insulated (1057602-00-A)

Ext Bar, Wobble, 1/4" Dr, HV Insulated (1057603-00-A)

Magnet, Flexible, HV Insulated, 18" (1057607-00-A)

Socket, 1/4" Dr, Deep,10 mm,Thin Wall, Insul (1133768-00-A)

Resistance meter, microohm, Hioki RM 3548 (1076927-00-A)

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 0 (1000V) must be worn at all times a high voltage cable, busbar, or fitting is handled. Refer to Tech Note TN-15-92-003, "High Voltage Awareness Care Points" for additional safety information.

Remove

  1. Remove the pyrotechnic battery disconnect from the penthouse. See Pyrotechnic Battery Disconnect (Remove and Replace).
  2. Remove the high voltage controller. See Controller - High Voltage (Remove and Replace).
  3. Remove the 12V DCDC passthrough. See Passthrough - DCDC - 12V (Remove and Replace).

Contactor - Positive - HV Battery-Remove

  1. Disconnect the electrical harness from the power conversion system LV connector and DC bus HV connector, and from the HV battery positive contactor connectors.

Contactor - Positive - HV Battery-Remove

  1. Remove the insulator caps from the HV battery positive contactor.

Contactor - Positive - HV Battery-Remove

  1. Remove and discard the bolt that attaches the HV battery positive contactor to the positive busbar.

Contactor - Positive - HV Battery-Remove

  1. Remove and discard the nut that attaches the HV battery positive contactor to the battery terminal.

Contactor - Positive - HV Battery-Remove

  1. Remove the nuts (x3) that attach the positive HV battery power switch to the penthouse.
  2. Tilt the rear of the HV battery positive contactor up, and then remove the contactor from the penthouse.

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