2025-03-13

Front Drive Unit Assembly - Motor Side NVH Covers Assembly (Remove and Install)

Correction code 3901049061, 39010490602 0.71 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.

Warning

This procedure is a DRAFT. Although it has been validated, Warnings and Cautions might be missing. Follow safety requirements and use extreme caution when working on or near High Voltage systems and components. Provide corrections and feedback to ServiceDevelopment@teslamotors.com.

Warning

Cybertruck electronics are powered by a 48V "mid voltage" or "MV" architecture that is designed to improve efficiency. Servicing MV components requires extra knowledge and care in order to avoid personal and/or vehicular harm. Read and understand MV precautions in Electrical Precautions and make sure any required MV-related training courses have been completed, as applicable.

Verify FDU revision

Note
If TM and FDU revision is -G or older then proceed to replace front drive unit replacement, If TM and FDU revision is -H or newer then continue this procedure, If DM then skip this step
Raise and support the vehicle. See Raise Vehicle - 2 Post Lift.
Open the LH front door and lower the LH front window.
Open the powered frunk.
Place the vehicle into Service Mode. See Service Mode.
Unlock the vehicle Gateway. See Gateway (Unlock).
Access thermal system routines using the UI

Note
Select quick controls > Service mode > Diagnostics > Thermal, Authorize routines by holding right turn signal, depressing brake pedal for 10 seconds with key on phone dock
Select "Start Thermal Fill Drain (Coolant and Refrigerant)" through UI

Note
Allow routine to complete, ensure routine is successful
Remove the rear underhood apron. See Underhood Trim - Rear Apron Assembly (Remove and Install).
Disconnect MV power. See Disconnect MV Power (Modify).
Verify operation of multimeter

Note
Set multimeter to DC voltage, Confirm multimeter is properly measuring voltage by testing MV battery, Touch lightly and do not damage terminals
Remove the front fascia assembly. See Front Bumper Fascia - Front Fascia (Remove and Install).
Place coolant catcher below RH front of vehicle
Disconnect radiator to manifold hose from radiator and plug connections

Note
1x spring clip, Remove from vehicle, Plug hoses
Disconnect manifold to radiator hose from radiator and plug connections

Note
1x spring clips, Plug hoses
Disconnect powertrain return hose from supermanifold

Note
1x spring clip, Plug open fitting
Disconnect powertrain return hose

Note
1x spring clip, 1x mounting clip
Release harness from CFM

Note
1x grommet, 2x connectors, 5x harness clips, Pull red locking tab to disengage louver connector, Release temperature sensor then disconnect, Release grommet and pull harness through from frunk area
Remove upper CFM fasteners

Note
2x bolts, 10mm, 10 Nm
Remove the LH and RH wheel caps and loosen the lug nuts. See Wheels - Wheel (Remove and Install).
Raise vehicle fully

Note
Set to a comfortable working height, Lower to locks, Ensure locks engage on both sides to prevent tilting
Remove the front aero shield. See Undertray - Front Aeroshield (Remove and Install).
Remove the mid aero shield. See Undertray - Mid Aeroshield (Remove and Install).
Remove all items from pockets and ensure not wearing metal items
Inspect HV insulating gloves

Note
Check gloves for damage prior to use, Refer to service document TN-15-92-003, for information on inspecting HV gloves. https://service.teslamotors.com/documents?model=&keys=TN-15-92-003&vehicle_system=&sort_by=field_date_submitted&sort_order=DESC
Put on HV insulating gloves and leather over gloves
Verify no HV - Install amp clamp to RDU HV harness

Note
Verify meter is zeroed out before performing measurement, Measure single cable. Verify ammeter is installed in correct direction. If current > 0.5A do not proceed with disconnecting HV connector. In this case, start vehicle electrical isolation again to make sure that all was properly shut down. Escalate for assistance as requiredIf current < 0.5A, Ok to disconnect and check voltage at HV plug on the battery side.Release locking tab and rotate the release lever up to disengage the connector, Release harness clip, Do not force the release lever up, Ensure the alignment tabs on the RDU header are not damagedMake sure to wear PPE (HV gloves, safety glasses) when working on high voltage component, Measure B+ to Ground, B- to Ground, B+ to B-, If voltage is greater than 10V, Pack contactors are not open or welded, Stop work and reach out to Service Engineering
Remove leather over gloves and HV insulating gloves
Remove bolt securing FDU HV harness to the FDU

Note
1x bolt
Disconnect FDU HV harness connector

Note
1x connector, Release locking tab and rotate the release lever up to disengage the connector, Do not force the release lever up, Ensure the alignment tabs on the FDU header are not damaged
Release RH front wheel liner from HV battery chinstrap

Note
1x push clip, 2x bolts, 10mm, 6 Nm
Position coolant drain container underneath RH front of HV battery
Disconnect powertrain supply and return hoses

Note
2x spring clips, 2x clips, Plug hoses
Disconnect CFM connectors

Note
2x connectors, 2x clips
Remove fore crossmember

Note
2x bolts, 18mm, 90 Nm, Push up on CFM, Use hammer if needed, Recommend assistance
Remove CFM

Note
Recommend assistance, Remove from below impact beam, Ensure harness is not pinched during removal
Lower vehicle partially and set lift onto locks

Note
Raise lift off locks, then hold lock release lever to keep locks free while vehicle is lowered, Set vehicle to comfortable working height
Disconnect front steering actuator

Note
4x connectors, Release locking tabs
Disconnect front drive unit breather

Note
1x breather hose
Release front end harness from subframe

Note
2x stud clips
Remove LH front wheel

Note
6x nuts, 21mm, 205 Nm
Remove LH front lower control arm shield

Note
3x bolts, 10mm, 7 Nm
Remove RH front wheel

Note
6x nuts, 21mm, 205 Nm
Remove RH front lower control arm aeroshield

Note
3x bolts, 10mm, 7 Nm
Raise vehicle fully

Note
Set to a comfortable working height, Lower to locks, Ensure locks engage on both sides to prevent tilting
Move the subframe lifting tool underneath the front subframe area
Connect air supply to subframe lifting tool
Secure lifting tool onto front subframe

Note
Recommend assistance, Secure subframe to subframe lifting tool with straps,
Position rear support posts onto FDU

Note
Both FDU supports need to engage the FDU, The left side post is dimpled and fits into a recess on the FDU and the right side post has a teflon block that sits against the FDU, Both posts are threaded and the handle should be turned until the posts are tight
Remove RH FDU mount bolt

Note
1x bolt, E18, 85 Nm, Early production vehicles may have 16mm bolt
Remove LH FDU mount bolt

Note
1x bolt, E18, 85 Nm, Access through hole in HCU bracket, Early production vehicles may have 16mm bolt
Remove subframe bolts

Note
2x bolts, 24mm, 220 Nm, 2x bolts, 21mm, 220 Nm, 4x bolts, 24mm, 215 Nm, Rearmost four bolts with stud have lower torque value of 215 Nm
Partially lower front subframe

Note
Lower enough to access motor side NVH cover
Release FDU harness from motor side

Note
6x clips, 1x connector
Remove motor side outboard NVH cover

Note
3x clips, Later models will come with Velcro cover
Install motor side outboard NVH cover

Note
3x clips, Later models will come with Velcro cover
Secure FDU harness onto motor side

Note
6x clips, 1x connector
Connect shop air supply to powertrain table
Raise drive unit and subframe into position

Note
Use caution to not damage components while raising subframe
Install subframe bolts

Note
2x bolts, 24mm, 220 Nm, 2x bolts, 21mm, 220 Nm, 4x bolts, 24mm, 215 Nm, Rearmost four bolts with stud have lower torque value of 215 Nm
Install LH FDU mount bolt

Note
1x bolt, E18, 85 Nm, Access through hole in HCU bracket, Early production vehicles may have 16mm bolt
Install RH FDU mount bolt

Note
1x bolt, E18, 85 Nm
Remove subframe lifting tool from under vehicle
Disconnect air supply from subframe lifting tool
Secure FDU HV harness

Note
1x connector, 1x bolt, 10mm, 10 Nm, Ensure no coolant or debris is present in connector housing at inverter or harness, Ensure locking tab is engaged
Connect powertrain supply and return hoses

Note
2x spring clips, 2x clips, Remove plugs from hoses
Lower vehicle partially and set lift onto locks

Note
Raise lift off locks, then hold lock release lever to keep locks free while vehicle is lowered, Set vehicle to comfortable working height
Install RH front lower control arm aeroshield

Note
3x bolts, 10mm, 7 Nm
Install RH front wheel

Note
6x nuts, 21mm, 205 Nm
Install LH lower control arm shield

Note
3x bolts, 10mm, 7 Nm
Install LH front wheel

Note
6x nuts, 21mm, 205 Nm
Secure front end harness to subframe

Note
2x stud clips
Connect front drive unit breather

Note
1x breather hose
Connect front drive unit harness connector

Note
1x connector, 1x harness clip, Engage locking tab
Connect harness to steering rack

Note
4x connector with locking tab
Raise vehicle fully

Note
Set to a comfortable working height, Lower to locks, Ensure locks engage on both sides to prevent tilting
Install CFM

Note
Install from bottom, Assistance recommend Manipulate as required, Ensure harness is not pinched during install
Install fore crossmember

Note
2x bolts, 18mm, 90 Nm, Lift CFM away from beam to aid in clearance, Install beam by sliding rewards
Connect CFM connectors

Note
2x connectors, Engage locking tab
Secure RH front wheel liner to HV battery chinstrap

Note
1x push clip, 2x bolts, 10mm, 6 Nm
Install the mid aero shield. See Undertray - Mid Aeroshield (Remove and Install).
Install the front aero shield. See Undertray - Front Aeroshield (Remove and Install).
Lower vehicle until tires are touching the ground

Note
Raise lift off locks, then hold lock release lever to keep locks free while vehicle is lowered
Install the LH and RH front wheels and wheel caps. See Wheels - Wheel (Remove and Install).
Install upper CFM fasteners

Note
2x bolts, 10mm, 10 Nm
Secure harness to CFM

Note
1x grommet, 2x connector, 1x harness clip, Secure grommet then connect temperature sensor, Engage locking tab on louver connector
Connect powertrain return hose

Note
1x spring clip, 1x mounting clip
Connect powertrain supply hose to supermanifold

Note
1x spring clip, Plug hose
Connect radiator inlet coolant hose

Note
1x spring clips,Ensure hose is fully engaged with a push-pull-push test
Connect radiator to manifold hose to radiator

Note
1x spring clip, Ensure hose is fully engaged with a push-pull-push test
Install the front lower fascia assembly but do not install the rear underhood apron. See Front Bumper Fascia - Front Fascia (Remove and Install).
Perform cooling system vacuum refill. See Cooling System (Vacuum Refill).
Run 'Thermal Performance' routine

Note
Via Front Drive Unit Replacement dashboard, Ensure result is 'Passed'
Exit Service Mode. See Service Mode.
Remove the vehicle from the lift. See Raise Vehicle - 2 Post Lift.
Raise the LH front window and close the LH front door.
Review wheel alignment requirements and add correction code as needed

Cybertruck Service Manual

Front Drive Unit Assembly - Motor Side NVH Covers Assembly (Remove and Install)

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