Tesla Model 3 Owners & Service Manuals

Tesla Model 3: Ski - Center Rail - HV Battery (RWD)- Install

Tesla Model 3 2017-2024 Service Manual / Battery System / HV Battery Enclosure / Ski - Center Rail - HV Battery (RWD) (Remove and Replace) / Ski - Center Rail - HV Battery (RWD)- Install

Ski - Center Rail - HV Battery (RWD)- Install

  1. Install the PTC heater and A/C compressor electrical harness into the sides of the HV battery center rail ski.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Install the cap cover at the rear of the HV battery center rail ski.
  2. Install the cap cover at the front of the HV battery center rail ski
  3. With an assistant, install the center rail ski to the HV battery.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Install the bolts that attach the center rail ski to the HV battery. Torque 38 Nm Torque 38 Nm

Ski - Center Rail - HV Battery (RWD)- Install

  1. Fasten the clips that attach the electrical harness to the HV battery.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Connect the electrical harness to the HV battery connector, lower the handle, and attach the locking tab.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Remove the plugs from the male and female fittings, quickly connect the RH inner HV battery return hose to the HV battery platter enclosure, and then fasten the clip.
  2. Remove the coolant drain from under the RH rear of the HV battery.
  3. Fully raise the handle on the rear drive unit HV electrical harness.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Attach the HV connector lever lock onto the back of the HV electrical harness.
  2. Firmly connect the HV electrical harness to the HV battery connector.

Caution:

Make sure that the harness fits the connector squarely and tightly.

  1. While pressing the harness to the connector, remove the HV connector lever lock.

Ski - Center Rail - HV Battery (RWD)- Install

  1. While pressing the harness to the connector, fully lower the handle.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Slide the release to lock the HV electrical harness.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Install the nuts that attach the rear drive unit HV electrical harness bracket to the HV battery. Torque 10 Nm

Ski - Center Rail - HV Battery (RWD)- Install

  1. Fasten the clips that attach the RH inner HV battery return hose to the HV battery.
  2. Install the rear HV battery skid plate. See Skid Plate - HV Battery - Rear (Remove and Replace).
  3. Position the coolant drain under the LH front of the HV battery.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Install the PTC heater and A/C compressor electrical harness bracket to the front of the HV battery, and then fasten the clips that attach the bracket to the HV battery.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Remove the plugs from the HV battery RH supply manifold and the HV battery LH supply manifold, immediately connect the male and female fittings, and then fasten the clip.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Install the A/C HV electrical harness into the connector bracket, and then connect the A/C HV electrical harness.

Ski - Center Rail - HV Battery (RWD)- Install

  1. Install the PTC heater HV electrical harness into the connector bracket, and then connect the PTC heater HV electrical harness.
  2. Install the front HV battery skid plate. See Skid Plate - HV Battery - Front (Remove and Replace).
  3. Perform a penthouse air leak test. See Penthouse Air Leak Test.
  4. Connect 12V power. See 12V Power (Disconnect and Connect).
  5. Perform a vacuum refill of the cooling system. See Cooling System (Vacuum Refill).

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