2025-07-02

Drive Unit - Rear (Dual Motor) (Remove and Replace)

Correction code 4001093072 FRT 3.18 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 ServiceManualFeedback@tesla.com. NOTE: See Personal Protection to make sure wearing proper PPE when performing the below procedure.

2025-07-02: Updated to latest time study.

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.

Open the LH front door and lower the LH front window.
Raise and support the vehicle. See Raise Vehicle - 2 Post Lift.
Place vehicle into Service Mode Plus using Vehicle Ops App

Note
Vehicle Ops App > Login > Shared Fleet > Search VIN > Service Mode Plus
Unlock the vehicle Gateway. See Gateway (Unlock).
Access rear drive unit replacement panel via Service Mode Plus UI

Note
Via UI > Service Mode > High Voltage > Procedures > Rear Drive Unit Replacement
Run 'Start Coolant Fill/Drain' routine

Note
Via Rear Drive Unit Replacement Dashboard, Ensure result is 'Passed'
Run 'Release Emergency Parking Brake' routine

Note
Via Rear Drive Unit Replacement Dashboard, Ensure result is 'Passed'
Remove the rear underhood apron. See Underhood Apron - Rear (Remove and Install).
Disconnect MV power. See Disconnect MV Power (Modify).
Remove the LH and RH rear wheels. See Wheels - Wheel (Remove and Install).
Disconnect RH rear EPB harness

Note
1x connector, Release locking tab
Release RH rear brake line from upper control arm

Note
1x bolt, 10mm, 10 Nm
Remove RH rear brake caliper and set aside

Note
2x bolts, 21 mm, 150 Nm, Hang caliper from body if not fully removing, Route caliper hose so that it does not get caught on stabar assembly
Remove RH rear brake rotor

Note
Rotor will be loose until caliper is installed
Use jack to simulate ride height on RH rear suspension

Note
Raise jack to simulate ride height, This is to release tension from the upper control arm which will be removed next later steps, DO NOT skip this you run into the risk of hurting yourself
Remove nut securing RH rear upper control arm to knuckle

Note
1x nylon nut, 21 mm, 150 Nm, Discard nut after removal, Place support stand below suspension to ease removal
Use jack to lower RH rear ride height back to hanging position

Note
Lower jack to let suspension hang
Release harness from RH rear air spring module

Note
2x connectors, 1x grommet
Remove RH rear lower control arm aeroshield

Note
3x bolts, 10mm, 7 Nm
Remove nuts securing RH rear air spring module to lower control arm

Note
2x nylon nut, 21 mm, 140 Nm, Discard nuts after removal
Disconnect EPB harness connector from LH rear brake caliper

Note
1x connector, Release locking tab
Release LH rear brake line from upper control arm

Note
1x bolt, 10mm, 10 Nm
Remove LH rear brake caliper and set aside

Note
2x bolts, 21 mm, 150 Nm, Hang caliper from body if not fully removing, Route caliper hose so that it does not get caught on stabar assembly
Remove LH rear brake rotor

Note
Rotor will be loose until caliper is installed
Use jack to simulate ride height on LH rear suspension

Note
Raise jack to simulate ride height, This is to release tension from the upper control arm which will be removed next later steps, DO NOT skip this you run into the risk of hurting yourself
Remove nut securing LH rear upper control arm to knuckle

Note
1x nylon nut, 21 mm, 150 Nm, Discard nut after removal, Move brake hose aside to avoid damage, Use caution when releasing rear upper control from knuckle
Use jack to lower LH rear ride height back to hanging position

Note
Lower jack to let suspension hang
Release harness from LH rear air spring module

Note
2x connectors, 1x grommet
Remove LH rear lower control arm aeroshield

Note
3x bolts, 10mm, 7 Nm
Remove fasteners securing LH rear air spring module to lower control arm

Note
2x bolts, 21mm, 140 Nm, 2x nylon nut, 21 mm, 140 Nm OR 2x cinch nuts, 140 Nm, If present discard nuts after removal, Cinch nuts can be reused, Cinch nuts should stay in place on air spring mounting flange, Hold cinch nuts with locking pliers if required, Early production vehicles may be equipped with either nylon locking nuts or knurled cinch nuts
Raise vehicle fully

Note
Set to a comfortable working height, Lower to locks, Ensure locks engage on both sides to prevent tilting
Remove rear skid plate

Note
6x clips, 3x bolts, 15mm, 42 Nm, 5x bolts, 13mm, 28 Nm, 2x bolts, 10mm, 6 Nm
Remove rear aero shield

Note
5x bolts, 10mm, 6 Nm, 2x guides
Remove rear diffuser

Note
6x bolts, 10mm, 6 Nm, 8x bolts, T30, 6 Nm, 6x clips, 6x harness secure clips, 16x tabs
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.
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
Disconnect RDU HV harness

Note
1x connector, Release locking tab and rotate release lever up, Do not force release lever up, Ensure alignment tabs on header are not damaged
Remove leather over gloves and HV insulating gloves
Disconnect rear steering gear harness from subframe

Note
1x connector, Release red locking tab
Disconnect DM rear subframe harness from rear fascia harness

Note
3x connectors, Release red tabs then disconnect connectors
Release rear diffuser brackets and set aside

Note
6x bolts, 13mm, 30 Nm, 4x tabs, Let brackets hang
Position coolant drain container underneath RH rear of HV battery
Disconnect RDU return hose from PT return hose

Note
1x spring clip, 1x clamp clip, Move wheel liner aside as needed, Plug coolant connections as needed
Disconnect RDU supply hose from HV battery

Note
1x spring clip, Plug coolant connections as needed
Remove RDU coolant hose from rear inverter

Note
1x clip, 1x hose clip, Plug both ends, Release clip, Use a long flathead to release clip on hose and release hose
Remove coolant drain container from underneath vehicle
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
Position powertrain lift under rear subframe
Connect shop air supply to powertrain table
Raise powertrain lift to rear subframe

Note
3x dowels, Make sure height on hoist can be reached with powertrain lift height limit
Safely secure rear subframe onto powertrain lift

Note
Secure subframe to powertrain table and fixture
Remove bolts securing rear subframe to body

Note
4x bolts, 24mm, 355 Nm
Lower subframe table to access breather tube

Note
Use caution with RDU coolant hoses and breather line, Subframe jig assembly will need to be maneuvered to prevent coolant lines getting caught, Access breather from LH rear wheel well
Disconnect RDU breather tube

Note
2x tabs, 1x clip, Press tabs inward and pull breather up, Release clip from RDU casing
Fully lower subframe table

Note
Use caution with RDU coolant hoses, Subframe table will need to be moved back to prevent coolant lines getting caught, Ensure DU breather line is not caught
Disconnect air supply from subframe lifting tool
Remove RDU supply hose from rear inverter

Note
1x spring clip, Plug both ends after disconnecting
Disconnect coolant hoses from chiller

Note
2x spring clips, Plug both ends
Release RDU supply and return hose from subframe

Note
4x clips
Disconnect RDU HV cable from RDU

Note
1x connector, Disengage locking tab then release connector body and move aside
Remove RDU HV cable assembly

Note
4x bolts, 10mm, 4 Nm, 1x clip
Disconnect RDU logic connector

Note
1x connector, Release locking tab, Do not get coolant ingress into this connector, Move aside as needed
Remove LV harness from RDU

Note
2x connectors, Release red locking tabs, 3x clips
Disconnect RDU oil pump

Note
1x connector, Release connector lock, depress and gently pull
Release LH rear halfshaft from RDU

Note
1x U-bolt, 2x nuts, 10mm, Torque hand-tight, Wrap cable around inner joint then tighten with U-bolt
Release RH rear halfshaft from RDU

Note
1x U-bolt, 2x nuts, 10mm, Torque hand-tight, Wrap cable around inner joint then tighten with U-bolt
Attach RDU sling

Note
3x eyelets
Attach drive unit sling to gantry
Remove RDU mounting bolts

Note
2x bolts, E18, 85 Nm
Remove RDU gearcase mount bolts

Note
2x bolts, 18mm, 110 Nm, Shift drive unit rearward if tools become jammed once released
Raise sling to lift drive unit out of subframe

Note
Recommend assistance, Pull drive unit rearwards to clear steering gear, Rotate as required to clear halfshafts
Position empty drive unit crate below drive unit

Note
May need to adjust sling, Use pallet if no empty crate available
Lower drive unit onto empty drive unit crate

Note
Use pallet if no empty crate available
Remove lifting sling from drive unit

Note
3x hooks
Attach drive unit sling tool to new drive unit

Note
3x hooks
Secure drive unit sling to gantry
Raise drive unit out of drive unit crate
Lower sling to position drive unit into subframe

Note
Recommend assistance, Position drive unit to clear steering gear, Rotate as required to clear halfshafts
Install RDU gearcase mount bolts

Note
2x bolts, 18mm, 110 Nm, Shift drive unit as required to align
Install RDU mounting bolts

Note
2x bolts, E18, 85 Nm
Remove drive unit sling from gantry
Remove sling from RDU

Note
3x eyelets
Install LH rear halfshaft into RDU
Install RH rear halfshaft into RDU
Connect RDU oil pump

Note
1x connector, Engage locking tab
Install LV harness onto RDU

Note
2x connectors, Secure red locking tabs, 3x clips
Connect RDU logic connector

Note
1x connector, Inspect connector housing on harness side and inverter side for presence of coolant or any debris, Verify lever is fully engaged
Install RDU HV cable assembly

Note
4x bolts, 10mm, 4 Nm, 1x clip
Connect RDU HV connector

Note
1x connector, Inspect connector housing on harness side and inverter side for presence of coolant or any debris, Engage locking tab
Secure RDU supply and return hose onto subframe

Note
4x clips
Connect coolant hoses onto chiller

Note
2x spring clips, remove plugs and connect, Perform push-pull test
Secure rear inverter coolant hose to gearbox housing

Note
1x hose clip
Install rear inverter cooler hose

Note
1x spring clip
Position subframe lifting tool with subframe assembly under vehicle
Connect air supply to subframe lifting tool
Raise drive unit until sufficient access is available to breather

Note
Recommend assistance, Use caution to not damage components while raising subframe, Position coolant lines above HV battery lip
Connect RDU breather tube

Note
2x tabs, 1x clip, Install clip onto RDU casing, Verify tabs are fully engaged
Fully raise rear drive unit and subframe into position

Note
Recommend assistance, Use caution to not damage components while raising subframe, Position coolant lines above HV battery lip
Loosely install bolts securing rear subframe to body

Note
4x bolts, 24mm, Hand Tight, Start bolts by hand before using power tools
Torque bolts securing rear subframe to body

Note
4x bolts, 24mm, 355 Nm
Remove rear subframe tie downs from powertrain lift

Note
Release subframe to powertrain table and fixture
Lower powertrain table from subframe and move away from vehicle
Position coolant drain container underneath RH rear of HV battery
Install coolant hose onto rear inverter lower fitting

Note
1x spring clip, Remove plugs from both ends, Perform push-pull-push test
Connect RDU supply hose onto HV battery

Note
1x spring clip, Remove plugs as needed
Connect RDU return hose to PT return hose

Note
1x spring clip, 1x clamp clip, Move wheel liner aside as needed, Remove plugs
Remove coolant drain container from underneath vehicle
Connect RDU HV harness

Note
1x connector, Verify lever is upright and in open position, Carefully seat connector and allow lever to engage, Fully secure lever and verify red tab is locked, Do not damage any pins
Secure rear diffuser brackets

Note
6x bolts, 13mm, 30 Nm, 4 tabs
Connect DM rear subframe harness onto rear fascia harness

Note
3x connectors, Secure red tabs
Connect rear steering gear harness

Note
1x connector, Engage red locking tab
Install rear aero shield

Note
5x bolts, 10mm, 6 Nm, 2x guides
Install rear diffuser

Note
6x bolts, 10mm, 6 Nm, 8x bolts, T30, 6 Nm, 6x clips, 6x harness secure clips, 16x tabs
Install rear skid plate

Note
6x clips, 3x bolts, 15mm, 42 Nm, 5x bolts, 13mm, 28 Nm, 2x bolts, 10mm, 6 Nm, Apply Loctite 222 to mid aero shield bolts and install fasteners
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 nuts securing LH rear air spring module to lower control arm assembly

Note
2x bolts, 21mm, 140 Nm, 2x nylon nut, 21 mm, 140 Nm OR 2x cinch nuts, 140 Nm, If present install new nylon locking nuts, Cinch nuts can be reused, Cinch nuts should stay in place on air spring mounting flange, Hold cinch nuts with locking pliers if required, Early production vehicles may be equipped with either nylon locking nuts or knurled cinch nuts
Use jack to simulate ride height on LH rear suspension

Note
Raise jack to simulate ride height, This is to release tension from the upper control arm which will be removed next later steps, DO NOT skip this you run into the risk of hurting yourself
Install nut securing LH rear upper control arm to knuckle

Note
1x nylon nut, 21 mm, 150 Nm, Install new nylon nut, Counter-hold joint to install nut, Support suspension to ease installation, Ensure brake hose is properly routed
Use jack to lower LH rear ride height back to hanging position

Note
Lower jack to let suspension hang
Secure harness to LH rear active dampener

Note
2x connectors, 2x grommets
Install LH rear lower control arm aeroshield

Note
3x bolts, 10mm, 7 Nm
Position LH rear brake rotor

Note
Rotor will be loose until caliper is installed
Install LH rear brake caliper onto LH rear knuckle

Note
2x bolts, 21mm, 150 Nm
Connect EPB harness connector to LH rear brake caliper

Note
1x connector, Engage locking tab
Install LH rear brake line onto upper control arm

Note
1x bolt, 10 mm, 10 Nm
Install nuts securing RH rear air spring module to lower control arm assembly

Note
2x nylon nut, 21 mm, 140 Nm, Install new nylon nuts
Use jack to simulate ride height on RH rear suspension

Note
Raise jack to simulate ride height, This is to release tension from the upper control arm which will be removed next later steps, DO NOT skip this you run into the risk of hurting yourself
Install nut securing RH rear upper control arm to knuckle

Note
1x nylon nut, 21 mm, 150 Nm, Install new nylon nut, Counter-hold joint to install nut, Support suspension to ease installation
Use jack to lower RH rear ride height back to hanging position

Note
Lower jack to let suspension hang
Secure harness to RH rear active dampener

Note
2x connectors, 2x grommets
Install RH rear lower control arm aeroshield

Note
3x bolts, 10mm, 7 Nm
Position RH rear brake rotor

Note
Rotor will be loose until caliper is installed
Install RH rear brake caliper onto RH rear knuckle

Note
2x bolts, 21mm, 150 Nm
Connect RH rear EPB harness

Note
1x connector, Engage locking tab
Install RH rear brake line onto upper control arm

Note
1x bolt, 10 mm, 10 Nm
Install RH rear wheel

Note
6x nuts, 21mm, 205 Nm
Install LH rear wheel

Note
6x nuts, 21mm, 205 Nm
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
Remove coolant bottle cap
Install vacuum refill cap onto coolant bottle assembly
Place empty coolant container into front storage area

Note
If frunk is not installed take caution, CFM fan shroud assembly cannot support a full coolant container, Ensure overflow container is empty, Place fender cover over FEM and front fascia
Fill container with at least 15L of coolant
Place filled coolant container onto coolant drain & fill cart

Note
Do not place container with 15L of coolant on top of CFM fan shroud, Position cart as close as possible to front of vehicle
Setup coolant refill tool

Note
Verify all valves on refill tool are in the closed position, See image for clarity
Install vacuum refill hose to refill cap on coolant bottle

Note
Perform push-pull-push test to verify hose is fully installed
Position overflow hose into empty container
Place refill hose inside filled coolant container

Note
Make sure hose end is fully submerged into coolant
Connect shop air supply to coolant refill tool

Note
If not already done, Verify refill valve is set to off
Open air inlet valve to draw a vacuum, Once gauge stabilizes, Fully close valve

Note
Gauge stabilizes roughly (60-70 cmHg), Vacuum should not drop after the valves are closed
Slowly open the refill valve to allow coolant to be drawn into the system

Note
Make sure hose end of refill hose is fully submerged during entire process
Once the gauge reads zero, close the coolant refill valve
Remove shop air supply to coolant refill tool

Note
If not already done, Verify refill valve is set to off
Remove coolant refill hose from coolant container
Remove coolant overflow hose from coolant container
Remove vacuum refill hose from refill cap on coolant bottle
Remove vacuum refill cap from coolant bottle assembly
Remove coolant refill tool from vehicle

Note
Move coolant drain & fill cart away from vehicle
Remove coolant container from inside underhood area
Connect FRL connector then connect MV battery connector

Note
2x connectors, Connect FRL connector then secure locking tab, Position lever to secure MV battery connector then slide eCPA to right, Early production trucks may have black FRL connector, If power cycling vehicle then ensure at least 60 seconds has passed since powering down
Hold brake pedal and select park on UI to disable EPB service mode
Run 'Stop Coolant Fill/Drain' routine

Note
Via Rear Drive Unit Replacement dashboard, Ensure result is 'Passed'
Run 'CAN Redeploy' routine

Note
Via Rear Drive Unit Replacement dashboard, CAN redeploy will start immediately
Run 'Coolant Air Purge' routine

Note
Via Rear Drive Unit Replacement dashboard, Touch time only, wait until coolant pumps stop running (audible noise), Routine Passed will appear, but pumps will run for 10 minutes, If you start next another routine during this time it will fail, Make sure vehicle is not in "Drive", Routine is still running despite the completed message, Speeds can be monitored in garage under PT Thermal tab, Idle speed = ~1500 RPM, Test will vary speeds from 3500-6500 RPM and actuate valves between SERIES and PARALLEL, Putting vehicle into "Drive" will stop this routine, If speeds hover at 7000 RPM, this indicates the pumps are air locked, perform a vacuum fill, Continue to add coolant and purge until the coolant level reaches between the NOM and MAX Lines on the bottle
Inspect coolant level and top off as necessary

Note
Ensure that the fluid level is at the Max line, Top off fluid as required
Install coolant bottle cap
Run 'Thermal Performance Test' routine

Note
Via Rear Drive Unit Replacement dashboard, Ensure result is 'Passed'
Run ODIN routine PROC_ICE_X_EXIT-SERVICE-MODEvia Toolbox: (link)
Install the LH and RH rear wheels. See Wheels - Wheel (Remove and Install).
Install the rear underhood apron. See Underhood Apron - Rear (Remove and Install).
Raise the LH front window and close the LH front door.
Perform test drive

Note
Perform a validation test drive after repairDrive a minimum speed of 25mph, Drive in a straight line and check for excessive pull, Verify the steering wheel is centered when vehicle is driving straight, Determine whether an alignment is recommendedAdd correction code 00040100 as needed

Cybertruck Service Manual

Drive Unit - Rear (Dual Motor) (Remove and Replace)

Figure 1

Figure 2

Figure 3