2026-03-25

Cover - Ancillary Bay (Remove and Replace)

Correction code 16101002 1.08 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure. NOTE: See Ergonomic Precautions for safe and healthy working practices.

Equipment:
  • 1127845-00-A Asy, Service Cover, Penthouse, Model 3
  • 1059330-00-B Skt, 1/4in Dr, 5-Lobe Torx Plus External
  • 1076971-02-A Wrench, Torque + Angle, 1/4" Dr
  • 1108272-00-B Cap, Logic Conn, Inv, 3DU
Additional part that may be required for this operation (for Europe only):
  • 1108781-BB-F: LABEL - RECYCLING WARNING - EU
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
Remove all jewelry (watches, bracelets, rings, necklaces, earrings, ID tags, piercings, etc.) from your person, and all objects (keys, coins, pens, pencils, tools, fasteners, etc.) from your pockets before performing any procedure that exposes you to high voltage.
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
If corrective eyewear is necessary to safely perform any procedure, make sure that the eyewear is securely restrained to the head and cannot fall off.
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
Only technicians who have completed all required certification courses are permitted to perform this procedure. Tesla recommends third party service provider technicians undergo equivalent training before performing this procedure. For more information on Tesla Technician requirements, or descriptions of the subject matter for third parties, see HV Certification Requirements. 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.

Install

  1. For Europe only: Check the ancillary bay cover that is being replaced for the presence of a recycling warning label that includes a CE marking and manufacturer information.
    • If the recycling warning label with CE marking and manufacturer information is not present on the ancillary bay cover being replaced, continue to the next step.
    • If the recycling warning label with CE marking and manufacturer information is present on the ancillary bay cover being replaced:
      1. Note the area where the recycling warning label is affixed on the ancillary bay cover being replaced.
      2. Clean the corresponding area on the new ancillary bay cover with an IPA wipe and allow 1 minute dry time.
      3. Install a new recycling label with CE marking and Manufacturing Information (part number 1108781-BB-F) on the new ancillary bay cover.
  2. If the old ancillary bay cover has volcano brackets, and the replacement ancillary bay cover does not have the same brackets, rework the High Voltage Controller (HVC) as required to achieve proper fitment between the replacement cover and HVC. If the replacement cover has volcano brackets, skip to the next step in this procedure.
    Figure 1. Replacement ancillary bay cover without volcano brackets
    Figure 2. Ancillary bay cover rework area; Cover shown installed for clarity
    Figure 3. HVC standoff to be removed; Ancillary bay cover shown removed for clarity
    1. Disconnect the ancillary bay harness from the HVC connectors.
    2. Remove the bolts that attach the HVC to the hinge tray, and then remove the controller from the vehicle.
      2 Nm (1.5 lbs-ft)
      Figure 4. 5-Bolt HVC
    3. Use a Dremel cut off wheel to remove the HVC standoff. Discard the standoff.
      Warning IconA warning icon, calling your attention to a possibly risky situation
      Warning
      Wear appropriate personal protective equipment (PPE) including cut-resistant gloves and safety glasses when performing this procedure.
      Warning IconA warning icon, calling your attention to a possibly risky situation
      CAUTION
      Do not damage the HVC upper surface or surrounding standoffs.
      Informational PurposesAn informational icon, calling your attention
      Note
      Cut as close towards the base of the standoff as possible.
      Informational PurposesAn informational icon, calling your attention
      TIp
      Use of the following tool(s) is recommended:
      • Dremel Accessory Kit, 110 Piece
    4. Apply electrical tape over the HVC standoff hole.
      Informational PurposesAn informational icon, calling your attention
      TIp
      Use of the following tool(s) is recommended:
      • Electrical Tape
    5. Install the HVC into the ancillary bay, and then install the bolts that attach the HVC to the hinge tray.
      2 Nm (1.5 lbs-ft)
    6. Connect the ancillary bay harness to the HVC connectors.
  3. Install the ancillary bay cover. See Cover - Ancillary Bay (Remove and Install).
  4. Perform the ancillary bay air leak test before installing the 2nd row seat cushion. Ancillary Bay Air Leak Test
  5. Install the 2nd row lower seat cushion. See Seat Cushion - Lower - 2nd Row (Remove and Replace).
  6. Connect 12V power. See 12V/LV Power (Disconnect and Connect).