26/11/2024 13:26:28

Ancillary Components - Last Mile Busbar Assembly (Remove and Install)

Correction code 1630010151 1630010152 FRT 4.50 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.

2024-11-22: Added warning to NOT skip steps to remove the tonneau slats.
2024-11-22: Added missing step to remove/install tonneau slats.

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.

Warning

DO NOT SKIP the steps to remove the tonneau slats. Work on or around the ancillary bay REQUIRES the removal of the tonneau slats. Failure to remove the tonneau slats while working on or around the ancillary bay will result in conditions that may cause personal injury.

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.

Raise and support the vehicle. See Raise Vehicle - 2 Post Lift.
Open the LH front door and lower the LH front window.
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 > Thermal > Actions
Select 'Coolant System' to enter coolant circuit screen, Select 'Coolant Fill/Drain' using the UI and
PROC_VCFRONT_X_START-THERMAL-FILL-DRAIN
via Toolbox: (link)via Service Mode:
Thermal ➜ Actions ➜ Start Thermal Fill/Drain
Thermal ➜ Coolant System ➜ Start Coolant Fill/Drain
Thermal ➜ Refrigerant System ➜ Start Refrigerant Fill/Drain
via Service Mode Plus: Drive Inverter ➜ Front Drive Inverter Replacement ➜ Start Fluid Fill/Drain
-COOLANT window will appear, Select 'Run'
Note
Verify indicator displays green for Coolant readiness, Thermal Fill Drain routine has a 50 minute time limit
Remove the tonneau slats. See Slat System - Tonneau (Remove and Install).
Remove bed floor assembly

Note
10x bolts, 15mm, 56 Nm, 4x anchors, Open anchors as needed, Lift front edge with trim tool then remove panel, Recommend assistance
Release RH tonneau NVH cover

Note
6x bolts, 10mm, 5 Nm, 2-peice NVH assembly order of operations requires RH side to be released first to allow busbar clearance for LH side removal
Remove RH tonneau NVH cover

Note
Release rearward then slide over LH side NVH cover before removing upward
Release LH tonneau NVH cover

Note
5x bolts, 10mm, 5 Nm
Remove LH tonneau NVH cover

Note
Slide towards center, Ensure busbar clearance during removal to avoid damage to NVH material
Remove tonneau coverbox cross supports

Note
8x screws, T25, 5 Nm
Clean all debris from ancillary cover

Note
During removal of ancillary cover any debris on top of the cover may be deposited into the ancillary bay
Release pressurized pack air line to Ancillary

Note
1x connector, Do not release air line to reservoir, Rapid loss of pressure will result if wrong air line is released.
Remove VOSS fitting from pressurized pack air line to Ancillary

Note
1x VOSS fitting, Slide threaded section back, Remove the collet, Then slide threaded section off of air line, Discard after removal
Release pressurized pack valve block from air suspension reservoir

Note
1x bolt, 10mm, 5 Nm, 1x connector, 1x clip, 1x zip tie, Release lock before connector disengagement, Cut zip tie at reservoir/ancillary air line bundle, Release harness clip at bracket
Release air suspension valve block

Note
3x rubber grommets, Rotate clockwise until top 2 rubber feet have released from bracket, Pull upwards at 45 degree angle to release bottom rubber foot from bracket, Leave all air lines and connections secured and set assembly aside
Release air suspension reservoir

Note
2x nuts, 13mm, 33 Nm, 2x fir tree clips
Place air suspension reservoir in service position then install Ancillary Access Bench

Note
Raise and swing air suspension reservoir to the side of the bed, Place Ancillary Access Bench onto rear casting ensuring no air lines or harnesses are being pinched
Remove the rear underhood apron. See Underhood Trim - Rear Apron Assembly (Remove and Install).
Disconnect MV power. See Disconnect MV Power.
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
Raise vehicle fully

Note
Set to a comfortable working height, Lower to locks, Ensure locks engage on both sides to prevent tilting
Remove mid aeroshield. See Undertray - Mid Aeroshield (Remove and Install).
Disconnect pressurized pack lines

Note
2x VOSS fittings, 12mm, 8Nm, Discard and replace
Remove VOSS fitting from pressurized pack air lines

Note
2x VOSS fitting, Slide threaded section back, Remove the collet, Then slide threaded section off of air line, Discard after removal
Position coolant drain container underneath RH rear of HV battery
Disconnect rear PT supply and RDU supply hoses

Note
2x spring clip, Plug hoses immediately to prevent excess coolant loss, Allow PCS coolant to drain as much as possible before plugging
Release PCS coolant header from ancillary floor

Note
2x bolts, EP10, 6Nm
Remove coolant drain container from underneath vehicle
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 Pyro Fuse Access cover

Note
4x bolts, E-Torx 5 lobe, 10 Nm
Remove primary pyro fuse

Note
2x bolts, 13mm, 5 Nm + 60 Degrees, Support pyro fuse while removing bolts
Remove secondary pyro fuse

Note
2x bolts, 13mm, 5 Nm + 60 Degrees, Support pyro fuse while removing bolts
Release connectors at 2x4 header (AC compressor and Charger headers)

Note
2x connectors, Fully release red lock tab, Pull black latch down to release connector
Release 2x4 header assembly

Note
4x bolts, 5-lobe 10mm, 6 Nm
Release drive unit connectors from ancillary headers

Note
3x connectors, Release blue lock tab, Rotate black latch
Remove bolts securing HC-Stak HV Headers for LHRDU, FDU, RHRDU from ancillary flange

Note
6x bolts, 5-lobe 10mm, 10 Nm
Remove LHRDU, FDU, RHRDU headers from ancillary flange

Note
3x headers, No tools required, inspect header seals, Replace header if damaged
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
Disconnect ancillary bay MV connector

Note
1x connector, Double locking, Release tab then pivot lever, Release second tab to disengage connector, Wait 1 second between locking tab release to discharge and prevent arcing
Remove bolt securing busbar HV connector lid

Note
1x bolt, EP10, 9 Nm
Remove bolts securing HV connector to DC FC header

Note
2x bolts, 10mm, 9 Nm
Release HV connector from DC FC header

Note
1x connector, Use inflatable airbag to suspend busbar assembly above ancillary assembly
Support HV Busbar assembly

Note
Suspend assembly to maintain clearance
Remove fast charger header doubler

Note
2x bolts, E10 5 Lobe Torx, 10 Nm
Release low voltage header

Note
2x bolts, 10mm, 6 Nm
Release fasteners securing ancillary cover to HV battery

Note
22x bolts, E10 5-Lobe, 6 Nm, Use E10 5-Lobe socket without magnet, The fasteners are captive and will stay attached to the penthouse cover, Follow fastening order
Remove ancillary cover

Note
Use suction cup and maneuver around busbar and tonneau cage
Remove DC header

Note
Slide header off DC bus links, Inspect seal, Replace header if damaged
Disconnect PCS MV connector

Note
1x connector, Slide red lock off of lever, Rotate lever to release connector
Release PCS MV harness

Note
1x bolt, 10mm, 6 Nm, 1x clip
Release MV header

Note
4x datums, 1x edge clip, 1x fir tree clip
Release HVC connectors

Note
2x clips, 3x connectors, Release connector locks, Depress levers and pull at connector, Do not pull from harnessIf RTV is present at 2 connectors, using a ceramic knife cut through and remove RTV until connector can be disconnected
Release BMB passthrough connectors

Note
2x connectors, Release connector locks, Depress levers and pull at connector, Do not pull from harness
Release ACJB LV connector & ACJB to device cluster HV connector

Note
2x clips, 2x connectors, Release connector locks, Depress levers and pull at connectors, Do not pull at harness
Remove MV ancillary harness
Release HVC harness from PCS

Note
1x connectors, Release connector lock, Depress lever and pull at connector, Do not pull at harness
Release device cluster busbar fasteners

Note
4x bolts, Torx Plus 55, 5Nm + 60 Degrees, Captured bolts with insulated covers
Remove device cluster assembly fasteners

Note
4x bolts, E10 5 Lobe Torx, 6Nm
Remove device cluster from ancillary tray

Note
Place device cluster on stand to protect headers at bottom of assembly, Remove lifting/install tool, Make sure to wear PPE (HV gloves, safety glasses) when working on high voltage component
Release PCS

Note
6x captured bolts, 8mm, 6Nm
Remove PCS from ancillary bay

Note
1x suction cup, Secure suction cup to center of PCS, Remove PCS with coolant hoses attached and plugs secured at header
Remove last mile busbar assembly

Note
3x bolts, 10mm, 10 Nm, 3x captive bolts, T55, 5 Nm + 60 degrees
Install last mile busbar assembly

Note
3x bolts, 10mm, 10 Nm, 3x captive bolts, T55, 5 Nm + 60 degrees
Install PCS to ancillary bay

Note
1x suction cup, Secure suction cup to center of PCS, Install PCS with coolant hoses attached and plugs secured at header
Secure PCS to ancillary

Note
6x captured bolts, 8mm, 6Nm
Install device cluster to ancillary tray

Note
Align datums and headers to ancillary and slowly lower into place, Avoid contact of drive unit headers to ancillary tray, Make sure to wear PPE (HV gloves, safety glasses) when working on high voltage component
Secure device cluster assembly fasteners

Note
4x bolts, E10 5 Lobe Torx, 6Nm
Secure device cluster busbar fasteners

Note
4x bolts, Torx Plus 55, 5Nm + 60 Degrees, Captured bolts with insulated covers
Perform Hioki measurements from device cluster assembly and busbar bolts

Note
1x bolts, E10 5 Lobe Torx, 6Nm, 4x bolts, Torx Plus 55, 5Nm + 60 Degrees, Perform zero adjust to Hioki meter prior to testingUse diagram in images to find probing locations and the reading specifications to look forLSL means: Lower Specification LimitUSL means: Upper Specification Limit1020_301 | T1 LSL 0.002 mΩ (2 μΩ) - USL 0.05 mΩ (50 μΩ)1020_304 | POS Contactor LSL 0.002 mΩ (2 μΩ) - USL 0.05 mΩ (50 μΩ)1010_603 | HVC Ground strap LSL 0.35 mΩ (350 μΩ) - USL 0.78 mΩ (780 μΩ)1020_303 | Shunt2 LSL 0.003 mΩ (3 μΩ) - USL 0.05 mΩ (50 μΩ)1020_302 | Shunt1 LSL 0.003 mΩ (3 μΩ) - USL 0.05 mΩ (50 μΩ)If readings are lower than the LSL numbers you are not probing correctlyIf readings are higher than USL numbers you have bolts that are not torqued correctly or connectors that may be softset or have internal connector issues
Secure HVC harness to PCS

Note
1x connectors, Secure connector lock
Poistion MV ancillary harness for install
Secure ACJB LV and HV connectors

Note
2x clips, 2x connectors, Secure connector locks
Secure BMB passthrough connectors

Note
2x connectors, Secure connector locks, Connectors are poke yoked do not force engagement, Ensure locking tabs are facing front of vehicle when connecting
Secure HVC connectors

Note
2x clips, 3x connectors, Release connector locks, Depress levers and pull at connector, Do not pull from harness, Apply sealant to connectors at device cluster if it was present during disassembly
Secure MV header

Note
4x datums, 1x edge clip, 1x fir tree clip
Secure PCS MV harness

Note
1x bolt, E10 5 Lobe, 6 Nm, 1x clip
Connect PCS MV connector

Note
1x connector, PCS header not datumed, Ensure correct orientation and polarity of connection, Harness color red for LV+ and black for LV-, Swing down locking lever, Slide lock fully to engage on top of lever
Install DC header

Note
Slide header on to DC bus links, Inspect seal, Replace header if damaged
Install ancillary cover

Note
Use suction cup and maneuver around busbar and tonneau cage
Secure fasteners of cover to HV battery

Note
22x bolts, E10 5-Lobe, 6 Nm, Use E10 5-Lobe socket without magnet, The fasteners are captive and will stay attached to the penthouse cover, Follow fastening order
Secure low voltage header

Note
2x bolts, 10mm, 6 Nm
Secure fast charger header doubler

Note
2x bolts, E10 5 Lobe Torx, 10Nm
Clean HV connector contact surface of residual Penetrox

Note
Allow 1 minute dry time after removing Penetrox, New busbar comes with Penetrox applied to HV connector
Clean busbar HV connector contact surface of residual Penetrox

Note
Allow 1 minute dry time after removing Penetrox, It is necessary to clean HV connector during re-use of busbar
Apply Penetrox onto HV connector joints

Note
Apply 2 drops of Penetrox A-13 about 5mm in diameter to either side of the hole on both leads, Spread evenly to verify the contact surface is fully covered
Position busbar connector and lower onto HV header

Note
Release bungee cord
Install bolts securing charge port busbar kit to HV Header

Note
2x bolts, 10mm, 9 Nm
Perform Hioki resistance test at each HV joint from HV busbar lead to bolt head

Note
2x HV joints, When using Hioki tester, verify the meter has been properly adjusted and set prior to usageThe acceptable resistance is between 0.050 mΩ (50 μΩ) and 0.195 mΩ (195 μΩ).If the resistance is greater than 0.195 mΩ (195 μΩ), stop work and escalate the Toolbox session.If the resistance is lower than 0.050 mΩ (50 μΩ), reposition the probes and measure again.If the resistance is repeatedly between 0.00 mΩ and 0.050 mΩ (50 μΩ), hioki test passed, proceed to next step
Install bolt securing busbar HV connector lid

Note
1x bolt, EP10, 9 Nm
Remove leather over gloves and HV insulating gloves
Connect Ancillary bay MV connector

Note
1x connector, double locking, Rotate lever into 2nd lock, Perform a pull test to ensure connector engaged correctly
Secure tonneau coverbox cross supports

Note
8x screws, T25, 5 Nm, Supports install in the same direction of the fasteners
Install LH tonneau NVH cover

Note
Ensure busbar clearance during install to avoid damage to NVH material
Secure LH tonneau NVH cover

Note
5x bolts, 10mm, 5 Nm
Install RH tonneau NVH cover
Secure RH tonneau NVH cover

Note
6x bolts, 10mm, 5 Nm
Remove Ancillary Access Bench then place air suspension reservoir into position for installation

Note
Ensure air lines are not twisted, Ensure no harnesses are caught
Secure air suspension reservoir

Note
2x nuts, 13mm, 33 Nm, 2x fir tree clips
Secure air suspension valve block

Note
3x rubber grommets, Rotate counter-clockwise until top 2 rubber feet are secured onto bracket, Push downwards at 45 degree angle to secure bottom rubber foot into bracket, Position air lines and connections into place for installation
Install new VOSS air fitting to pressurized pack valve block at ANC circuit

Note
1x VOSS fitting, 12mm, 8 Nm, Do not remove VOSS plastic plug until pressurized pack line is installed
Secure pressurized pack air line from Ancillary to valve block

Note
1x line, Remove plastic cap from VOSS fittings, Press air lines into fitting until mark aligns with top of fitting, Verify line is properly secured by performing push and pull test
Secure pressurized pack valve block to air suspension reservoir

Note
1x bolt, 10mm, 5 Nm, 1x connector, 1x clip, 1x zip tie, Secure reservoir and ancillary air lines at white marked sections
Install bed floor assembly

Note
10x bolts, 15mm, 56 Nm, 4x anchors, Open and close anchors as needed, Recommend assistance
Raise vehicle fully
Secure PCS coolant header to ancillary floor

Note
2x bolts, EP10, 6Nm
Position coolant drain container underneath RH rear of HV battery
Remove one PCS coolant header plugs & connect leak test adapters

Note
2x spring clips, Leave coolant plugs in supply and return lines, Secure NW22 plug to either coolant header port (Item 6 of kit), Combine NW18 Male testing Couple (Item 5 of kit) to Adapter NW18 180° (Item 1 of kit) and secure to other coolant header port
Attach coolant pressure tester to pressure fitting adapter

Note
Confirm hose is securely screwed tight
Attach coolant pressure tester to compressed air line

Note
Make sure valves are closed on pressure regulator
Open the regulator valve then slowly adjust regulator to 50 psi

Note
Use caution as coolant may spill, Make sure to wear safety glasses
Open 2nd valve slowly

Note
Slowly open valve on pressure regulator and allow pressure to reach specification
Close the valve and let pressure settle

Note
Wait 2 minutes for pressure to settle, Record the reading
Set timer for 2 minutes and select start

Note
Once timer is complete, select Stop Reset
Perform the coolant pressure leak test

Note
Wait for another 4 minutes and record the reading. Max delta 0.35 psi. Check coolant hose to see if it is fully seated or not if pressure test fails
Close both valves
Remove coolant pressure tester from pressure fitting adapter
Remove coolant pressure tester adapter from PCS coolant header
Secure rear PT supply and RDU supply hoses to PCS coolant header

Note
2x spring clip, Make sure the locking tabs are fully seated, Perform push-pull-push test
Remove coolant drain container from underneath vehicle
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
Install LHRDU, FDU, RHRDU headers to ancillary flange

Note
3x headers, No tools required, inspect header seals, Replace header if damaged
Secure bolts to HC-Stak HV Headers for LHRDU, FDU, RHRDU to ancillary flange

Note
6x bolts, 5-lobe 10mm, 10 Nm
Secure 2x4 header assembly

Note
4x bolts, 5-lobe 10mm, 6 Nm, Confirm alignment of assembly with fastener openings
Secure connectors at 2x4 header (AC compressor and Charger headers)

Note
2x connectors, Fully engage red lock tab
Secure drive unit connectors to ancillary headers

Note
3x connectors, Rotate black latch, Ensure blue locking tab is fully engaged
Install secondary pyro fuse

Note
2x bolts, 13mm, 5 Nm + 60 degrees, Support pyro fuse while installing bolts
Install primary pyro fuse

Note
2x bolts, 13mm, 5 Nm + 60 degrees, Support pyro fuse while installing bolts
Perform Hioki resistance test at each HV joint from HV busbar lead to pyro fuse busbar

Note
4x HV joints, When using Hioki tester, verify the meter has been properly adjusted and set prior to usageThe acceptable resistance is between 0.050 mΩ (50 μΩ) and 0.195 mΩ (195 μΩ).If the resistance is greater than 0.195 mΩ (195 μΩ), stop work and escalate the Toolbox session.If the resistance is lower than 0.050 mΩ (50 μΩ), reposition the probes and measure again.If the resistance is repeatedly between 0.00 mΩ and 0.050 mΩ (50 μΩ), hioki test passed, proceed to next step
Remove leather over gloves and HV insulating gloves
Install Pyro Fuse Access cover

Note
4x bolts, E-Torx 5 lobe, 10 Nm, Ensure seal is fully seated and undamaged
Install pressurized pack lines

Note
2x VOSS fittings, 12mm, 8 Nm, Remove plastic caps from VOSS fittings, Install new VOSS fittings if re-using fuse cover, Press air lines into fitting until mark aligns with top of fitting, Verify line is properly secured by performing push and pull test
Install the mid aeroshield. See Undertray - Mid 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
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
Reconnect MV power. See Disconnect MV Power.
Select "Stop Thermal Fill Drain" through UI

Note
Allow routine to complete, ensure routine is successful
Select "Start Coolant Air Purge" using the UI

Note
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
Install the rear underhood apron. See Underhood Trim - Rear Apron Assembly (Remove and Install).
Perform Thermal Performance through the UI

Note
Select Thermal > Actions > Test Thermal Performance, click Run, close once routine is completed, if thermal test fails follow https://toolbox.teslamotors.com/articles/206000
Install the tonneau slats. See Slat System - Tonneau (Remove and Install).
Exit Service Mode. See Service Mode.
Raise the LH front window and close the LH front door.
Remove the vehicle from the lift. See Raise Vehicle - 2 Post Lift.

Cybertruck Service Manual

Ancillary Components - Last Mile Busbar Assembly (Remove and Install)

Figure 1

Figure 2

Figure 3