Tesla, Inc.

Service Bulletin

SB-22-33-006
April 30, 2022

Retrofit Hydraulic Control Unit Wake-Up
Wire, Model Y (Li-Ion Battery)

Classification

Section/Group

Mobile Service

Model Year

Country/Region

Build Location

Repair Bulletin
2021 - 2022

33 - Brakes

Model

Model Y

Can Perform (where
permitted)

All

Configuration
Li-Ion Battery

Fremont, Giga Shanghai

The model(s) and model year(s) listed are a general approximation of the affected VIN list. Refer to the VIN/Bulletin Tracker or Customer/Vehicle profile to determine
applicability of this bulletin for a particular vehicle.

Repair Bulletin: This repair bulletin provides instructions on addressing a noted condition or possible customer concern regarding
the operation of Tesla vehicles. These instructions should only be performed by trained professionals.

Condition
Some Model Y vehicles were built without a hydraulic control unit (HCU) wake-up wire, and in rare circumstances,
braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle
power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power
cycle.

Correction
Upon customer complaint of braking and stability control alerts that clear after a vehicle power cycle, retrofit an HCU
wake-up wire.

Correction Description

Correction

Time

Retrofit HCU Wake-Up Wire, Model Y (Li-Ion Battery)

S022233006

0.45

SB-22-33-006 Not Applicable

Part Number
Parts Required 1742989-00-A
1061177-00-B

S012233006

0.00

Description

Quantity

ASY,HARN,ESP WAKE,JUMPER,M3Y
WIRE HARNESS REPAIR KIT

1
As Needed

These part numbers were current at the time of publication. Use the revisions listed or later, unless
otherwise specified in the Parts Catalog.

Special Tools 1025812-00-A
1060908-00-A
1451046-00-A
1451045-00-A

Pin Drag Kit
Soldering Iron and Heat Tool Kit
Crimp Tool
Wire cutting and stripping pliers

Shop Supplies Electrical tape

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Procedure
1. Remove the underhood storage unit (refer to Service Manual procedure 15240702).
2. Remove the HEPA duct (refer to Service Manual procedure 18103802).
3. Disconnect LV power (refer to Service Manual procedure 17010410).
4. Release the clip that attaches the HV harness to the shock tower brace (Figure 1).

Figure 1
5. Release the clips (x2) that attach the coolant hose to the LV battery (Figure 2).

Figure 2
6. Loosen the forward RH shock tower brace bolt (Figure 3).

Figure 3
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7. Remove the remaining shock tower brace bolts (x5) (Figure 4), and shift the shock tower brace forward on the LH
side.

Figure 4
8. Slide the red locking tab, raise the lever (Figure 5), and then remove connector X151 from the HCU (Figure 6).

Figure 5

Figure 6

9. Release the clip that attaches the electrical harness to the HCU bracket (Figure 7).

Figure 7
10. If necessary, remove cable ties or cut tape to move connector X151 to a comfortable working position.

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11. Remove the cable tie from the rear of connector X151 (Figure 8).

Figure 8
12. Release the tabs (x2) that attach the rear cover to connector X151 (Figure 9), swing the rear cover out
(Figure 10), and then remove the rear cover from the connector.

Figure 9

Figure 10

13. Unwrap and remove the electrical tape from the electrical harness for a distance of 150 mm from connector X151
(Figure 11).

Figure 11

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14. Use a pick to slide the large locking tab of connector X151 from “CLOSE” to “OPEN” (Figure 12).

Figure 12
15. Use the tool from the pin drag kit to release the lock for terminal 28 of connector X151 (Figure 13), and at the
same time, remove the white wire from receptacle 28 (Figure 14).

Figure 13

Figure 14

16. Cut the terminal from the white wire, and then wrap the wire end with yellow tape (Figure 15).

Figure 15

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17. Use the tool from the pin drag kit to release the lock for terminal 25 of connector X151 (Figure 16), and at the
same time, remove the yellow wire from receptacle 25 (Figure 17).

Figure 16

Figure 17

18. Cut the yellow power terminal wire 100 mm from the end (Figure 18), and then discard the end.

Figure 18
19. Slide the shrink tubing over both wires of the jumper, to the middle of the jumper (Figure 19).

Barrel
crimp

Figure 19

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20. Make a butt splice repair to attach the yellow power terminal wire to the barrel crimp of the jumper (Figures 20, 21,
and 22).
NOTE: Refer to SI-17-17-002,’Electrical Harness Repair’ for instructions how to make this repair.

Figure 20 – Crimp wire and
solder barrel crimp

Figure 21 – Slide shrink tubing over
barrel crimp and heat

Figure 22 – Wrap with yellow
tape to complete

21. Insert the smaller terminal of the jumper into receptacle 28 (Figure 23) and the larger terminal of the jumper into
receptacle 25 (Figure 24).

Figure 23

Figure 24

22. Perform a Push-Pull-Push check on each wire to make sure the wires are secure in the connector (Figure 25).

Figure 25

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23. Use a pick to slide the large locking tab of connector X151 from “OPEN” to “CLOSE” (Figure 26).

Figure 26
24. Bundle the white wire and excess jumper wire neatly into the electrical harness with yellow tape (Figure 27), and
then wrap the harness with anti-abrasion tape (Figure 28).

Figure 27

Figure 28

25. Attach the rear cover to connector X151, and then swing the rear cover close (Figure 29), engaging the tabs (x2)
(Figure 30).

Figure 29

Figure 30

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26. Fasten a small cable tie to the rear of connector X151 to secure the rear cover (Figure 31), and then trim the tie.

Figure 31
27. Fasten the clip that attaches the electrical harness to the HCU bracket (Figure 32).

Figure 32
28. Attach connector X151 to the HCU (Figure 33), lower the lever, and then slide the red locking tab (Figure 34).

Figure 33

Figure 34

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29. Return the shock tower brace back to position, install all bolts, and then tighten the forward bolts (x2) as shown
(Figure 35) (torque 62 Nm).

Figure 35
30. Tighten the remaining bolts (x4) as shown (Figure 36) (torque 67 Nm).

Figure 36
31. Fasten the clips (x2) that attach the coolant hose to the LV battery (Figure 37).

Figure 37

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32. Fasten the clip that attaches the HV harness to the shock tower brace (Figure 38).

Figure 38
33. Connect LV power (refer to Service Manual procedure 17010410).
34. Install the HEPA duct (refer to Service Manual procedure 18103802).
35. Install the underhood storage unit (refer to Service Manual procedure 15240702).

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