Front Drive Unit Assembly - Heat Exchanger, 3DU - Remove And Replace: Install

Install the bolts (x2) that attach the heat exchanger to the front drive unit to install the heat exchanger.
5 N.m (3.7 lbs-ft)

NOTE: Lightly coat the O-rings with clean KAF 1 gearbox fluid.
Do not pinch or deform the O-rings during installation.
Do not allow the coolant to enter oil passages of the drive unit to avoid cross-contamination.

Tip: Use of the following tool(s) is recommended:
- Flex head ratchet/flex head torque wrench
- 3 in extension
- Torque wrench with angle measurement
- Socket 3/8 in Dr EP10
Courtesy of TESLA, INC.
Remove the plugs on the ends of fittings, and then secure the spring clip to connect the front drive unit inverter inlet hose to the front drive unit heat exchanger.
NOTE: Perform a push-pull-push test to make sure that the hose is fully secured.
Coolant loss greater than 1L requires vacuum fill.

Courtesy of TESLA, INC.
Remove the plugs on the ends of fittings, and then install the spring clip and the plug to connect the front drive unit powertrain return hose to the front drive unit heat exchanger.
NOTE: Perform a push-pull-push test to make sure that the hose is fully secured.
Installing the chiller side of hose first will eliminate the coolant loss when connecting to the supermanifold.

Courtesy of TESLA, INC.
Remove the fluid catcher from underneath the vehicle.
Drain and refill the front drive unit gearbox fluid. See GEARBOX FLUID - FRONT DRIVE UNIT (3DU) - DRAIN AND REFILL .
On the touchscreen, tap the Service Mode "wrench" (at the bottom of the touchscreen UI), and then tap Thermal > Coolant System > Coolant Purge > Run and allow the routine to complete.
NOTE:
- The routine will last for a while after the stop message displays. The coolant pumps are audible.
- The test lasts for approximately 10 mins. Do not start another routine during this time.
- Make sure that the vehicle is not in Drive. Putting the vehicle into Drive will stop this routine.
- The speed in the test varies from 3500-6500 RPM (idle speed = ~1500 RPM) and the actuated valve varies between SERIES and PARALLEL.
- If the speed hovers at 7000 RPM, it indicates the pumps are air locked. Perform the vacuum fill again. Continue to add the coolant and purge until the coolant level reaches between the NOM and MAX Lines on the bottle.
Inspect the coolant level, top off as necessary, and then install the coolant bottle cap.
NOTE: Ensure that the coolant level is at the "Max" line.
Install the underhood storage unit. See EXTERIOR FITTINGS - LUGGAGE COMPARTMENT TRIM - FRONT LUGGAGE STORAGE COMPARTMENT - FRUNK ASSEMBLY - REMOVE AND REPLACE .
Disable Service Mode. See SERVICE MODE .
Raise the LH front window and close the LH front door.
Remove the lift arms from below the vehicle.