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
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.
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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.

Remove

  1. Remove the ancillary bay cover. See Cover - Ancillary Bay (Remove and Install).
    Informational PurposesAn informational icon, calling your attention
    Note
    Turn the adjustable elements (x4) clockwise to remove them from the ancillary bay cover as well.

Install

Informational PurposesAn informational icon, calling your attention
Note
All 2017 – 2023 Model 3 vehicles require ancillary covers with volcano brackets. If a new pack arrives without volcano brackets, swap the ancillary bay cover for one with volcano brackets. Do not rework the HVC.
  1. Install the ancillary bay cover. See Cover - Ancillary Bay (Remove and Install).
  2. Install and hand-tighten the adjustable elements (x4) on the ancillary bay cover counter-clockwise so that they are fully engaged.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Hand-tighten only.
  3. Perform the ancillary bay air leak test before installing the ancillary rails and the 2nd row seat cushion. Ancillary Bay Air Leak Test
  4. Install the 2nd row lower seat cushion. See Seat Cushion - Lower - 2nd Row (Remove and Replace).
  5. Connect 12V power. See 12V/LV Power (Disconnect and Connect).