Tesla Model 3 Owners & Service Manuals

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

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

Ski - Center Rail - HV Battery (Dual Motor)-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 (Dual Motor)-Install

  1. Install the HV battery to front drive unit harness into the center of the HV battery center rail ski.

Ski - Center Rail - HV Battery (Dual Motor)-Install

  1. Install the cap cover at the rear of the HV battery center rail ski.

Ski - Center Rail - HV Battery (Dual Motor)-Install

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

Ski - Center Rail - HV Battery (Dual Motor)-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 (Dual Motor)-Install

  1. Fasten the clips that attach the PTC heater and A/C compressor electrical harness cover to the rear of the HV battery.

Ski - Center Rail - HV Battery (Dual Motor)-Install

  1. Connect the PTC heater and A/C compressor electrical harness to the HV battery connector, lower the handle, and attach the locking tab.
  2. Fully raise the handle on the rear drive unit HV electrical harness.

Ski - Center Rail - HV Battery (Dual Motor)-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 (Dual Motor)-Install

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

Ski - Center Rail - HV Battery (Dual Motor)-Install

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

Ski - Center Rail - HV Battery (Dual Motor)-Install

  1. Install the nuts that attach the rear drive unit HV electrical harness bracket to the HV battery. Torque 10 Nm
  2. Position the coolant drain under the RH rear of the HV battery.

Ski - Center Rail - HV Battery (Dual Motor)-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.

Ski - Center Rail - HV Battery (Dual Motor)-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 (Dual Motor)-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 (Dual Motor)-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 (Dual Motor)-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 (Dual Motor)-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. Fully raise the handle on the front drive unit HV electrical harness

Ski - Center Rail - HV Battery (Dual Motor)-Install

  1. Attach the HV connector lever lock onto the back of the HV electrical harness.

Ski - Center Rail - HV Battery (Dual Motor)-Install

  1. Firmly connect the HV electrical harness to the front drive unit 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 (Dual Motor)-Install

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

Ski - Center Rail - HV Battery (Dual Motor)-Install

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

Ski - Center Rail - HV Battery (Dual Motor)-Install

  1. Install the bolt that attaches the front drive unit HV harness to the front drive unit. Torque 10 Nm
  2. Install the front aero shield panel. See Panel - Aero Shield - 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).

    READ NEXT:

     Skid Plate - HV Battery - Front (Remove and Replace)

    Remove Remove the front aero shield. See Panel - Aero Shield - Front (Remove and Replace). Remove the bolts and clips that attach the skid plate to the battery, and then remove the plate f

     Skid Plate - HV Battery - Rear (Remove and Replace)

    DRAFT Warning: This procedure was derived from pre-production computer models, and might not reflect the real-world situation. Warnings and cautions might be missing. Follow safety requirements a

     Vent Assembly - HV Battery - LH (Remove and Replace)

    Vent Assembly - HV Battery - LH- Remove Remove Use Toolbox to put the vehicle into Factory Mode. Invoke diagnostics on the touchscreen. Inspect the Notifications for either a BMS_a123 or a BMS_W12

    SEE MORE:

     Sensor - Wheel Speed - ABS - Front - LH (Remove and Replace)

      Remove Remove the front LH wheel. See Wheel (Remove and Install). Remove the front LH wheel arch liner. See Wheel Arch Liner - Front - LH (Remove and Replace).

     Insert - Front Bin - Center Console (Remove and Replace)

    Remove Remove the LH front floormat. Remove the center console. See Center Console (Remove and Install) Raise the center console armrest for access. Remove the LH and RH center console decor trim. See Decor Trim - Center Console (Remove and Replace). Remove the screws that attach the

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