25/03/2024 17:28:07

Oil Pump - Rear Drive Unit (Remove and Replace)

Correction code 40304602

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 vehicle

Note
Set air suspension to "Jack Mode" if equipped
Open LH front door and lower window
On the touchscreen, touch Controls (vehicle icon), and then touch the Software tab to display the vehicle firmware version.

Note
Make sure the vehicle Firmware is 2019.40.2 or later, update the firmware if not. Update the vehicle firmware. See Firmware Update.
Open hood
Remove rear underhood apron

Note
8x clips
Remove RH underhood apron

Note
9x clips
Remove LH underhood apron

Note
9x clips
Release drainage hoses from HEPA filter inlet duct

Note
2x hoses
Remove clips securing HEPA filter inlet duct to cowl panel

Note
3x push clips
Remove HEPA filter inlet duct

Note
2x clips on HEPA filter
Remove HEPA filter outlet duct from vehicle

Note
Lift up, pull towards front of vehicle, then rotate clockwise
Power down vehicle using MCU

Note
Controls > E-brake & Power Off > Power off
Disconnect 12V negative terminal and First Responder Loop

Note
1x nut, 10mm, 5 Nm, 1x connector, Wait at least 2 minutes before disconnecting modules or HV components
Raise vehicle fully 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
Partially remove front aero shield

Note
12x bolts, 10mm, 4Nm, 2x push clips
Disconnect the front drive unit oil pump connector

Note
1x electrical connector, Access through subframe between steering rack and right axle
Remove clips securing LH shear plate to wheel fairing

Note
2x push clips
Remove LH shear plate

Note
1x nyloc nut, 15mm, 35 Nm, 3x screws, T25, 6 Nm, 1x bolt, 10mm, 4 Nm, Discard nyloc nut after removal
Remove clips securing RH shear plate to wheel fairing

Note
2x push clips
Remove RH shear plate

Note
1x nyloc nut, 15mm, 35 Nm, 3x screws, T25, 6 Nm, 1x bolt, 10mm, 4 Nm, Discard nyloc nut after removal
Remove bolts securing mid aero shield to vehicle

Note
7x bolts, 10mm, 4 Nm
Remove clips securing mid aero shield to vehicle

Note
7x push clips
Remove mid aero shield from vehicle
Disconnect the rear drive unit oil pump connector

Note
1x electrical connector,Rear oil pump location on top of drive unit at left side, Release connector lock, depress and gently pull
Position the oil drain container under RDU drain plug
Remove rear drive unit fill plug

Note
1x hex bolt, 8mm, 28 Nm, Remove fill plug first and observe, no fluid should come out otherwise system over filled
Remove rear drive unit drain plug

Note
1x hex bolt, 8mm, 28 Nm, Remove drain plug slowly, drain fluid into oil drain container
Install oil filter socket

Note
Carefully install oil filter socket until fully seated on to oil filter to ensure proper grip and clearance
Install flexible funnel

Note
Shape flexible funnel to keep fluid from spilling laterally, Position flexible funnel underneath oil filter toward oil drain container
Remove oil filter

Note
Tesla recommends that the oil filter is replaced with a new one upon removal. Any oil filter with visible corrosion or leaks must be replaced.

Note
Use 21mm ratcheting wrench to loosen oil filter, spin counterclockwise, 3 Nm and 135 degrees, Allow oil to drain, be mindful of coolant hoses, once loose remove wrench, unscrew oil filter by hand, allow fluid to flow down flexible funnel into oil drain container, Discard after removal
Re-position flexible funnel

Note
Move the flexible funnel to the right underneath the oil pump, move oil drain container to match the funnel output
Remove oil pump bolts

Note
2x bolts, M8, 5 Nm + 20 degrees
Remove oil pump

Note
Carefully insert plastic wedge between oil pump and lower housing bracket, in small increments work the wedge between lower housing bracket and oil pump until green o-ring is visible, remove oil pump by hand toward front of vehicle between coolant hoses, residual oil will drain from housing, allow oil to drain
Inspect seals and o-rings

Note
Inspect o-rings on removed parts, 3 o-rings on pump, one o-ring on each drain and fill plug, if missing o-ring on pump ensure it is not left in housing, if damaged o-ring on plugs replace affected plug, Check seal on oil filter, if missing check if still on housing and remove before install
Remove flexible funnel
Install oil pump to RDU

Note
Lubricate all o-rings on new oil pump, carefully position oil pump between coolant hoses, install pump
Install the fasteners securing the oil pump to the RDU

Note
2x bolts, M8, 5 Nm + 20 degrees
Connect the rear drive unit oil pump electrical connector

Note
1x electrical connector,Rear oil pump location on top of drive unit at left side, Engage connector lock, install and gently pull to test secure connection
Install new oil filter to RDU

Note
Tesla recommends that the oil filter is replaced with a new one upon removal. Any oil filter with visible corrosion or leaks must be replaced.

Note
Spin clockwise, 3 Nm and 135 degrees, Lubricate seal prior to installation
Install drain plug to small RDU

Note
1x hex bolt, 8mm, 28 Nm, Lubricate o-ring on fill plug, start by hand, Do not over torque due to risk of cracking case
Fill small RDU gearbox

Note
Ensure SK lubricant 212-B is used, Fill 2.4 qts or 2300 mL through fill plug hole, Pump slowly, If the RDU is filled too quickly the fluid will spill out before the correct amount is added
Install small RDU fill plug

Note
1x hex bolt, 8mm, 28 Nm, Lubricate o-ring on fill plug, start by hand, Do not over torque due to risk of cracking case
Remove oil drain container

Note
Position the oil drain container clear of the vehicle hoist, Clean any residual oil from drive unit and subframe
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
Reconnect First Responder Loop and 12V negative terminal

Note
1x nut, 10mm, 5 Nm, 1x connector
Enable Service Mode. See Service Mode.
If not already connected, connect a laptop with Toolbox 3.0 to the vehicle.

Note
Open Toolbox 3 website and establish connection to the vehicle. Select connection status icon at top right corner, and select Connect Locally (icon will turn green when vehicle is connected)
Type PROC_PMS_REAR_WRITE-OPC-TYPE in the search field, Make sure "Actions/Autodiag" is selected if not already
Select "Configure Rear Oil Pump LIN Node ID" and then "Run" once popup opens
Raise vehicle fully 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
Connect front drive unit oil pump connector

Note
1x electrical connector
Install push clips and tighten bolts securing aero shield to vehicle

Note
12x bolts, 10mm, 4 Nm, 2x push clips
Position mid aero shield and install bolts securing mid aero shield to vehicle

Note
7x bolts, 10mm, 4 Nm
Install clips securing mid aero shield to vehicle

Note
7x push clips
Install screws, bolt, and nut securing RH shear plate to vehicle

Note
3x screws, T25, 6 Nm, 1x bolt, 10mm, 4 Nm, 1x nut, 15mm, 35 Nm, Install new nut
Install clips securing RH shear plate to wheel fairing

Note
2x push clips
Install screws, bolt, and nut securing LH shear plate to vehicle

Note
3x screws, T25, 6 Nm, 1x bolt, 10mm, 4 Nm, 1x nut, 15mm, 35 Nm, Install new nut
Install clips securing LH shear plate to wheel fairing

Note
2x push clips
Lower vehicle fully

Note
Raise lift off locks, then hold lock release lever to keep locks free while vehicle is lowered
Connect 12V charger

Note
The vehicle 12V system must remain supported until vehicle firmware is completed
Reinstall the vehicle firmware. See Firmware Reinstall - Touchscreen.
Disconnect Toolbox from vehicle and install cubby under the MCU

Note
1x connector, 2x clips
Disconnect 12V charger from vehicle

Note
After FW update has completed the vehicle should no longer need auxiliary 12V support
Install HEPA filter outlet duct
Install HEPA filter inlet duct

Note
2x tabs, One on each side
Install clips securing HEPA filter inlet duct to cowl panel

Note
3x push clips
Secure drainage hoses to HEPA filter inlet duct

Note
2x hoses
Install LH underhood apron

Note
9x clips
Install RH underhood apron

Note
9x clips
Install rear underhood apron

Note
8x clips
Close hood

Note
Press firmly in green highlighted areas (see image), Damage may result from pressure elsewhere on hood
Remove vehicle from lift

Note
Lower rack arms fully and remove them from under vehicle, Remove air suspension from "Jack Mode"
Raise LH front window and close door