Tesla Model S: Battery - Auxiliary - 12V (RWD) (Remove and Replace)
Warning: If the 12V power supply is disconnected, do
not attempt to open any doors with door glass in closed position.
Failure to follow this instruction could result in door glass
shatter.
Note: Before disconnecting the 12V power supply,
ensure that the driver's door window is fully open. Failure to
follow this instruction could result in vehicle lockout.
Removal
- Disconnect 12V power.
- Rear wheel drive (RWD): Refer to
procedure.
- Dual Motor: Refer to procedure.
- Remove the pollen filter rear housing:
- If equipped, release the 2 barrel clips that secure the HV
harness to the bulkhead.
- Loosen the top right nut that secures the pollen filter rear
housing to the bulkhead (torque 6 Nm).
Note: It is not necessary to completely
remove the nut; the tab on the housing is notched.
- Remove the remaining nuts (x3) that secure the pollen filter
rear housing to the bulkhead (torque 6 Nm).
Note: The 2 lower nuts secure the HVAC
intake drain diverter.
- Release the lugs (x4) that secure the battery fuse box cover.
Remove the cover.
- Remove the nut that secures the body harness connector to the
battery fuse box (torque 6 Nm).
- Remove the nut that secures the battery positive terminal to the
fuse box (torque 12 Nm).
- Remove the nut that secures the battery fuse box to the battery
strap. Tie the battery fuse box aside (torque 6 Nm).
- Remove the nuts (x2) that secure the battery strap (torque 3.5
Nm). Remove the strap.
- Carefully lift the battery, turn it counter clockwise 90º, and
remove it through the opening.
Note: It can be difficult to remove C&D brand
batteries because they do not have handles. It might be
helpful to use duct tape in order to lift the battery high
enough so that it can be supported from the bottom:
- Cut a piece of high-strength duct tape, approximately 18 in
(45 cm) in length.
- Attach the ends of the duct tape to the long sides of the
battery, leaving a large section of duct tape free above the
battery. Twist this section of the duct tape back onto itself in
order to form a handle.
- Using the handle, slowly lift the battery until it can be
supported from the bottom.
Warning: Do not use the handle to fully
lift the battery out of the vehicle. Only lift the
battery high enough so that it can be supported from
the bottom.
Installation
Installation procedure is the reverse of removal, except for the
following:
- Ensure that the HVAC intake drain diverter is positioned
properly when reinstalling the pollen filter front housing.
Caution: Take care not to damage component(s).
- If changing from an Exide to a C&D battery, update the vehicle's
configuration with Toolbox.
- Connect a laptop with Toolbox to the vehicle.
- Select Views > Vehicle
Configuration > Vehicle Configuration Update.
- In the "12V Battery Type" menu, select C&D.
READ NEXT:
Warning: If the 12V power supply is disconnected, do
not attempt to open any doors with door glass in closed position.
Failure to follow this instruction could result in door glass
shat
Warning: If the 12V power supply is disconnected, do
not attempt to open any doors with door glass in closed position.
Failure to follow this instruction could result in door glass
shat
Warning: Before disconnecting the 12 volt power supply,
ensure that driver's door window is fully open. Failure to follow
this instruction could result in vehicle lockout.
Warning: If the
SEE MORE:
Removal
Remove front windshield (refer to procedure)
Lower headlining for access (refer to procedure)
With assistance remove headlining through front windshield
opening.
Remove rear map lamps from headlining.
How Speed Assist Works
Model S displays a speed limit on the instrument panel
and you can choose if and how you are warned when
you exceed the speed limit. Also, instead of using the
detected speed limit, you can base warnings on an
arbitrary speed limit that you enter manually.
In situations w