Tesla Model 3: 12V Power- Disconnect
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SPECIAL TOOLS
Cap, Logic Conn, Inv, 3DU (1108272-00-B)
Warning: This procedure disables 12V power, but does not verify that
high voltage power is no longer available to high voltage components (PTC heater,
A/C compressor, inverters, etc). Perform
Vehicle Electrical Isolation Procedure after this procedure, and before
servicing high voltage components.
Disconnect
Warning:
Prepare for these conditions before disconnecting 12V power:
-
Closed windows might shatter if the door is opened.
-
Closed doors might cause a lockout condition.
-
Airbags do not deploy.
-
Systems, displays, and other controls are off.
- Disconnect any charging cable.
- On the touchscreen, power off the climate control system, and wait at
least 30 seconds for the climate control system to completely shut down.
- Make sure the vehicle is in Park.
- Fully lower all door windows to avoid glass shatter and door lockout
conditions.
- Open the LH and RH rear doors, and then pass a shop towel halfway
through each door striker to prevent the latch from securing.
- Remove the 2nd row lower seat cushion. See
Seat Cushion - Lower - 2nd Row (Remove and Replace).
- Remove the rear underhood apron. See
Underhood Apron - Rear (Remove and Replace).
- On the touchscreen, touch Controls →
Safety & Security → Vehicle Power
→ Power Off.
Caution:
Do not proceed until the climate control system has been powered off
for at least 30 seconds. Do not disconnect 12V power while the climate control
system is operational.
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- Loosen the nut that attaches the 12V battery negative cable to the
battery, and then disconnect the cable from the battery.
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- Remove the foam cover from the RH side of the penthouse.
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- Disconnect the electrical harness from the high voltage controller
connector.
Note: The HV battery positive contactor and negative contactor open
with a clunk sound.
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- Install the logic connector cap onto the high voltage controller
connector to prevent mistaken reconnection and protect the connector.
- If you disconnected 12V power to service a high voltage component,
verify that high voltage power is no longer available to that component. See
Vehicle Electrical Isolation Procedure.
READ NEXT:
Connect
Remove the logic connector cap from the high voltage controller
connector.
Connect the electrical harness to the high voltage controller connector.
Install the foam cover to th
Remove
Remove the 2nd row lower seat cushion. See
Seat Cushion - Lower - 2nd Row (Remove and Replace).
Remove the rear underhood apron. See
Underhood Apron - Rear (Remove and Replace).
Remove
Remove
Remove the 2nd row lower seat cushion. See
Seat Cushion - Lower - 2nd Row (Remove and Replace).
Remove the rear underhood apron. See
Underhood Apron - Rear (Remove and Replace).
Remove
SEE MORE:
The turn signals flash three times or
continuously, depending on how far up or
down you move the lever. Lightly push the
turn signal lever up or down for a three-flash
sequence. For a continuous signal, push the
lever fully up or down.
The turn signals stop operating when canceled
by the st
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 and use extreme caution when working on or
near high voltage systems and components.
Remove
Remove