2025-06-11

Inverter - Rear (Long Range) (Remove and Replace)

Correction code NEW 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.

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.

2025-04-30: Released new procedure.

Open LH front door

Note
Push LH B-pillar door trigger to release
Lower LH front window
Open tailgate

Note
Press button to release
Raise and support vehicle

Note
Set air suspension to "Jack Mode"
Connect to vehicle using Toolbox 3

Note
OBD-II connection is integrated into drivers lower IP cover, Open Toolbox 3 website and establish connection to vehicle, https://toolbox.teslamotors.com, Select connection status icon at top right corner then select connect locally, Icon will turn green when connected, Successful connection will automatically unlock vehicle gateway and place UI in Service Mode Plus
Unlock vehicle gateway

Note
After vehicle has been put into "Service Mode", place keycard on center console to turn on drive rails, hold down the brake pedal, while keep pressing right hand signal button simultaneously for at least 10 seconds, "GTW UNLOCKING" should pop up on the UI right next to the VIN during these 10 seconds, once gateway is unlocked "GTW UNLOCKED 5400" will be displayed on the UI next to the VIN, the gateway will remain unlocked for 90 minutes, follow steps on Toolbox article #5582900 for any additional information
Disconnect Toolbox 3 from vehicle and remove laptop
Select 'High Voltage' via UI

Note
Service Mode Plus > High Voltage
Select 'Procedures'

Note
Lighting Bolt Icon > High Voltage > Procedures
Select 'Rear Drive Inverter Replacement'

Note
Procedures > Drive-Inverter-Replacement > Rear Drive Inverter Replacement
Select ‘Store Boot + App Data and start fluid fill/drain’, click ‘Run’, and allow routine to complete

Note
Select 'Close' once complete
Open powered front trunk

Note
Via exterior switch or UI
Remove rear underhood apron

Note
9x clips
Disconnect FRL connector then disconnect MV battery connector

Note
2x connectors, Release locking tab then disconnect FRL connector, Slide eCPA to left then lift lever to release MV battery connector, Early production trucks may have black FRL connector, Release eCPA by pushing down to unlock and slide red locking tab, Wait 2 minutes for electrical circuits to discharge before disconnecting modules
Remove LH rear wheel cap (PLACEHOLDER)
Remove RH rear wheel cap (PLACEHOLDER)
Loosen RH rear wheel nuts

Note
6x nuts, 21mm, 205 Nm
Remove fastener covers from bed floor assembly

Note
14x covers
Remove bed floor assembly

Note
10x short bolts, 15mm, 56 Nm, 2x long bolts, 15mm, 46Nm, Lift front edge with trim tool then remove panel, Recommend assistance
Raise vehicle partially and lower onto locks

Note
Set vehicle to comfortable working height, Make sure there's an audible click of the locks on both sides before lowering, otherwise vehicle may tilt to the side
Remove LH rear wheel

Note
6x nuts, 21mm, 205 Nm
Remove RH rear wheel

Note
6x nuts, 21mm, 205 Nm
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 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
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
Position coolant drain below rear inverter
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
Release rear drive unit LV harness clip

Note
1 clip
Release lower portion of rear inverter acoustic cover

Note
2x clips
Remove RDU HV harness bracket

Note
4x bolts, T30 , 10 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
Position coolant catcher below rear drive unit
Release acoustic cover surrounding RH motor mount

Note
5x clips, if acoustic cover is present on mount, remove and discard
Remove RDU supply hose from rear inverter

Note
1x spring clip, Plug both ends after disconnecting
Release rear inverter coolant hose from gearbox housing

Note
1x clip, Rotate hose away from inverter
Remove coolant catcher from below vehicle
Disconnect RDU HV cable from RDU

Note
1x connector, Disengage locking tab then release connector body and move aside
Disconnect RDU logic connector

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

Note
1x clip
Remove bolt securing ground strap to RDU

Note
1x bolt, 10mm, 10 Nm
Remove label to access phase out cover bolts

Note
Label is one time use, Discard after removal
Remove the bolts securing the phase out cover

Note
2x bolts, EP10, 14 Nm
Remove RDU phase out cover

Note
If cover or O-rings are damaged then replace
Remove phase plugs

Note
3x plugs, Discard after removal, Firmly grip plug with needle nose pliers then pull outward, If plugs not present then skip this step
Remove bolts securing phase busbars to RDI

Note
3x bolts, 10mm, 11.5 Nm, Fasteners should be reused, If fasteners need to be replaced then follow torque sequence, Tighten to 12.5 Nm then reverse 180 degrees then tighten to 5 Nm
Release acoustic cover surrounding RH motor mount

Note
5x clips, if acoustic cover is present on mount, remove and discard
Position jack to support rear drive unit
Loosen RH motor mount bolt

Note
1x bolt, E18, 85 Nm, 1x NVH mass, Revision D subframe will not have NVH mass,16 mm hex bolts cannot be used on Revision D subframe, E18 bolts can be used on all subframes, If mass present then mass must be reinstalled,
Remove bolts securing RH motor mount assembly

Note
3x bolts, EP14, 35 Nm + 55 degrees
Remove RH motor mount bolt

Note
1x bolt, E18, 85 Nm, 1x NVH mass, Revision D subframe will not have NVH mass, 16 mm hex bolts cannot be used on Revision D subframe, E18 bolts can be used on all subframes, If mass present then mass must be reinstalled
Remove RH rear motor mount assembly from subframe

Note
Acoustic cover sits between mount and subframe,If inverter mount is 1923000-xx-B or older, then replace with 1923000-xx-C or newer
Put on ESD wrist strap and secure it to inverter housing
Remove bolts securing the RDU inverter to gearbox assembly

Note
9x bolts, EP10, 12.5 Nm, Fasteners can be reused
Remove the inverter from drive unit and drain coolant

Note
Take caution to avoid damage to the PCBA
Remove drive inverter arc shield

Note
Discard after removal, If FR4 arc shield material is present then it must be replaced with silicone arc shield during reassembly, If silicone arc shield material is present then replace it with new silicone arc shield, FR4 material is rigid plastic, Silicone material is flexible
Place drive inverter onto ESD mat
Remove ESD wrist strap from old inverter
Prepare new drive inverter

Note
Prepare new drive inverter, Save packaging to MRB old drive inverter, Remove any red protective covers
Secure ESD strap onto new inverter housing
Wipe HV cable lugs to ensure contact surfaces are free of debris

Note
Allow 1 minute dry time
Install drive inverter arc shield

Note
If FR4 arc shield material was present then it must be replaced with silicone arc shield, If silicone arc shield material was present then replace it with new silicone arc shield, FR4 material is rigid plastic, Silicone material is flexible
Position rear inverter onto drive unit

Note
1x bolt, EP 10, Hand tight, 2x guide pins, Maneuver rear inverter into position, Take caution when maneuvering between subframe do not damage the circuit board, Thread in fastener to hold unit in place
Install fasteners securing inverter to gearbox assembly

Note
9x bolts, EP10, Install hand tight, Torque at a later step
Torque fasteners securing inverter to gearbox assembly

Note
9x bolts, EP10, 12.5 Nm, Torque two fasteners nearest alignment dowels first
Install bolts securing phase busbars to RDI

Note
3x bolts, 10mm, 11.5 Nm, Fasteners should be reused, If fasteners need to be replaced then follow torque sequence, Tighten to 12.5 Nm then reverse 180 degrees then tighten to 5 Nm
Install RDU phase out cover

Note
Updated cover must be installed, If cover or O-rings are damaged then replace
Install bolts securing the RDU phase out cover

Note
2x bolts, EP10, 14 Nm
Install phase out cover warning label

Note
One time use, install new label
Remove ESD wrist strap from inverter
Take old inverter and prepare for MRB, Label properly for return or disposal

Note
Use ESD wrist strap, Label inverter for MRB and return to packaging, Secure any protective red caps, Return or dispose of packaging through proper channels, Label the part as MRB
Install leak test adapter plug to 12V connector at inverter - placeholder
Install leak test adapter to RDU HV connector - placeholder
Connect regulator to adapter at HV connector
Close both valves on the regulator test tool
Connect regulator to air supply
Turn on regulator and open valve closest to regulator
Set regulator to 1 psi
Open the 2nd valve to inject air into the penthouse

Note
Close valve when pressure reaches 1 psi and stable
Wait 45 seconds for pressure to settle
Record start pressure valve
Wait 60 seconds for test
Record end pressure valve

Note
If pressure did not drop more than 0.04 psi, continue to next step. If pressure dropped more than 0.04 psi, then inspect for leaks.
Disconnect air supply from regulator tool
Disconnect regulator from leak test adapter at HV connector
Remove leak test adapter from HV connector
Remove leak test adapter plug from 12V connector at inverter - placeholder
Position RH side motor mount

Note
Maneuver between drive unit and subframe, if acoustic cover is present on mount, remove and discard,If inverter mount is 1923000-xx-B or older, then replace with 1923000-xx-C or newer
Hand tighten bolts securing RH rear motor mount to inverter and subframe

Note
4x bolts, E14, 35 Nm + 55 degrees, 1x bolt, E18, 85 Nm, 1x NVH mass, Revision D subframe will not have NVH mass, If mass present then mass must be reinstalled, Torque at later step
Torque bolts securing RH motor mount to rear drive unit

Note
4x bolts, E14, 35 Nm + 55 degrees, Follow torque sequence
Torque RH rear motor mount to subframe

Note
1x bolt, E18, 85 Nm, 1x NVH mass, Revision D subframe will not have NVH mass,16 mm hex bolts cannot be used on Revision D subframe, E18 bolts can be used on all subframes, If mass present then mass must be reinstalled,
Remove jack stand from supporting rear drive unit assembly
Secure RH side acoustic cover

Note
5x clips, Secure above clips and remaining from below
Install bolt securing ground strap to RDU

Note
1x bolt, 10mm, 10 Nm
Secure RDU LV harness

Note
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
Position coolant catcher below rear drive unit
Secure rear inverter coolant hose to gearbox housing

Note
1x hose clip
Install rear inverter coolant supply hose to inverter

Note
1x spring clip, Remove plugs from both ends, Perform push-pull test
Raise vehicle fully
Secure lower acoustic cover clips

Note
2x clips
Secure lower acoustic cover clips

Note
2x clips
Secure RDU LV harness clip

Note
1x clip
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
Position coolant drain below rear inverter
Install coolant hose onto rear inverter lower fitting

Note
1x spring clip, Remove plugs from both ends, Perform push-pull-push test
Remove coolant drain container from underneath vehicle
Install RDU HV harness bracket

Note
4x bolts, T30 , 10 Nm
Secure RDU header connector to ancillary

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

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

Note
6x nuts, 21mm, 205 Nm, Use star pattern
Torque LH rear wheel nuts

Note
6x nuts, 21mm, 205 Nm, Use star pattern
Install LH rear wheel cap (Placeholder)
Install RH rear wheel cap (Placeholder)
Perform cooling system vacuum fill. See Cooling System (Vacuum Refill).
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
Select ‘Stop Thermal Fluid Fill/Drain’, click ‘Run’, and allow routine to complete

Note
Select 'Close' once complete
Run ODIN routine
PROC_PMR_X_RESTORE-DATA-BOOT-AND-WRITE-DRIVE-TYPE
via Toolbox: (link)via Service Mode Plus:
Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Restore Bootloader Data
Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Restore Bootloader Data
Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Restore Bootloader Data
Run ODIN routine PROC_DIR_X_RESTORE-DATA-APPvia Toolbox: (link)via Service Mode Plus: Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Restore Application Data
Run ODIN routine
PROC_EGGRIGHT3_X_THERMAL-COOLANT-AIR-PURGE-START
via Toolbox: (link)via Service Mode Plus:
Drive Unit ➜ Front Drive Unit Replacement ➜ Coolant Air Purge
Drive Unit ➜ Rear Drive Unit Replacement ➜ Coolant Air Purge
Run ODIN routine
TEST-SELF_EGGRIGHT3_X_THERMAL-PERFORMANCE
via Toolbox: (link)via Service Mode:
Thermal ➜ Actions ➜ Test Thermal Performance
Thermal ➜ Coolant System ➜ Test Thermal Performance
via Service Mode Plus:
Drive Inverter ➜ Front Drive Inverter Replacement ➜ Thermal System Test
Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Thermal System Test
Drive Inverter ➜ Rear Left Drive Inverter Replacement ➜ Thermal System Test
Drive Inverter ➜ Rear Right Drive Inverter Replacement ➜ Thermal System Test
Drive Unit ➜ Front Drive Unit Replacement ➜ Thermal System Test
Drive Unit ➜ Rear Drive Unit Replacement ➜ Thermal System Test
Place stanchions around vehicle and set up a safety perimeter before performing resolver error learn

Note
Use safety stanchions to section off vehicle before driving vehicle on a lift
Raise vehicle partially and lower lift onto locks

Note
Set vehicle to comfortable working height, Make sure there's an audible click of the locks on both sides before lowering, otherwise vehicle may tilt to the side
Run ODIN routine PROC_DIR_X_RESOLVER-ERROR-LEARNvia Toolbox: (link)via Service Mode Plus: Drive Inverter ➜ Rear Drive Inverter Replacement ➜ Resolver Error Learn
Remove safety stanchions from around vehicle after resolver learn is completed

Note
Remove all stanchions after vehicle is finished with the resolver error learn
Install bed floor assembly

Note
10x short bolts, 15mm, 56 Nm, 2x long bolts, 15mm, 46Nm, Recommend assistance
Install fastener covers onto bed floor assembly

Note
14x covers
Close tailgate
Raise LH front window
Close 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

Inverter - Rear (Long Range) (Remove and Replace)

Figure 1

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Figure 3