23/10/2024 05:52:25
Gearbox Fluid - Rear Drive Unit (3DU) (Drain and Refill)
Correction code 40300102 0.78 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. To provide feedback on FRT values, email LaborTimeFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.
- 2024-08-15: Added step to perform software reinstall when the oil pump is replaced.
- 2024-04-05: Updated gearbox fluid information with link.
- 2024-02-27: Updated gearbox fluid to KAF 1.
- 2023-11-27: Added XP10 Jump Start and Oil Pump Switchbox to special tools list.
- 2023-10-26: Deleted the cabin intake duct RR step; Deleted steps for inspecting the condition of the drained fluid to replace the oil filter directly.
- 2024-04-25: Updated the description of the o-ring inspection step since the o-ring on the oil fill plug can not be replaced separately.
- 1139126-00-A KIT, DRIVE UNIT OIL FILL, MODEL 3
- 1130484-00-A Skt, Oil Filter, 63.5mm X 14
- 1129348-00-A Jump Start, XP-10
- 1131264-00-A Switchbox, Oil Pump, Model 3
Drain
- Raise and support the vehicle on a 2 post lift. See Raise Vehicle - 2 Post Lift.
- Open all doors and lower all windows.
- Remove the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
- Disconnect 12V power. See 12V/LV Power (Disconnect and Connect).
- Remove the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
- Disconnect the electrical connector from the oil pump.
- Position an oil drain container underneath the rear drive unit oil filter and oil pump.
-
Use the oil filter socket to remove
the oil filter from the rear drive unit.
NoteTesla recommends that the oil filter is replaced with a new one upon removal. Any oil filter with visible corrosion or leaks must be replaced.
-
Remove the bolts (x2) that attach the
rear drive unit oil pump to the rear drive unit.
Tip: Use of the following tool(s) is recommended:
- EPL10 socket
- 4 in extension
-
Remove the oil pump from the
rear drive unit using a flat head screwdriver at two different locations,
and then allow the gearbox fluid to drain.
NoteUse the rear drive unit casting as leverage to loosen the oil pump, and then pull the oil pump away.NoteAllow at least 10 minutes for the gearbox fluid to drain from the rear drive unit, or until a slow drip exits the rear drive unit.
- Remove the fill plug from the rear drive unit.
Refill
-
Inspect the seal on the oil filter,
the O-ring on the fill plug, and the O-rings (x3) on the oil pump.
- Verify there is one O-ring on the fill plug and three O-rings on the oil pump, and the oil filter seal is staying properly on the oil filter. Make sure no O-rings or seal is stuck in the rear drive unit assembly.
- If one of the O-rings on the oil pump is damaged, replace all the three o-rings.
- If the O-ring on the fill plug is damaged, install a new fill plug.
-
Lubricate the oil pump O-ring (x3)
with new gearbox fluid, and then reinstall the oil pump onto the rear drive unit
assembly.
NoteRefer to Fluids and Capacities to determine which gearbox fluid is applicable.
-
Install the bolts (x2) that attach the
oil pump to the rear drive unit.Tip: Use of the following tool(s) is recommended:
- EPL10 socket
- 4 in extension
-
Apply a light coat of new gearbox
fluid to the O-ring seal of a new oil filter, and then install the new filter onto the
rear drive unit.NoteRefer to Fluids and Capacities to determine which gearbox fluid is applicable.NoteTesla recommends that the oil filter is replaced with a new one upon removal. Any oil filter with visible corrosion or leaks must be replaced.
-
Using the measure and fill kit, fill
the container with 2300 mL of new gearbox fluid.
NoteRefer to Fluids and Capacities to determine which gearbox fluid is applicable.
- Connect the 12V power supply to the oil pump using the oil pump switchbox special tool and the XP-10 jump pack.
- Cut both the input and output hoses of the fluid transfer pump to approximately 26" (66 cm).
-
Insert the output hose of the fluid
transfer pump into the fill hole of the rear drive unit until fully seated, and then
pull the output hose back 5mm.
-
Set up the fill process by putting the
container with the measured new gearbox fluid in the drain basket, and then fully
submerge the input hose of the fluid transfer pump and prime the pump.
-
With an assistant, pump the new
gearbox fluid into the rear drive unit assembly as follows:
NoteRefer to Fluids and Capacities to determine which gearbox fluid is applicable.NoteThe minimum refill capacity of the rear drive unit assembly is 2.1 liters. Using excess gearbox fluid in the fill container allows the oil pump to dispense the full 2.1L without drawing air. Make sure that there is less than 200mL left when completed. Pumping the full 2.3 liters is not required.
-
Install the fill plug into the rear drive unit.
- Remove the oil drain container from underneath the drive unit.
- Disconnect the oil pump switchbox and XP-10 jump pack from the oil pump.
-
Connect the oil pump
electrical connector, and then engage the locking tab.
Important: Perform a push-pull test to verify that the connector is fully attached.
- Reconnect 12V power. See 12V/LV Power (Disconnect and Connect).
- If the drive unit oil pump was replaced: Perform a software reinstall. See Software Reinstall - Touchscreen.
- Connect to the vehicle with Toolbox 3.0.
-
In Toolbox, click the play button next to TEST-SELF_DIR_X_OIL-PUMP-PRESSURESearch for routine in ToolboxOil Pump Low Pressure Test - Rear Drive Unit and select Run.
NoteThis test might take up to 5 times to successfully run. If this test keeps failing, add additional fluid, if needed.
- Install the mid aero shield panel. See Panel - Aero Shield - Mid (Remove and Replace).
- Install the rear underhood apron. See Underhood Apron - Rear (Remove and Replace).
- Remove the vehicle from the lift.