Tesla, Inc.

Service Bulletin

SB-23-20-002
June 16, 2023

R5

Replace Occupant Classification System
(OCS) of Front Passenger Seat while
Servicing Subcomponents

Classification

Section/Group

Mobile Service

Model Year

Country/Region

Build Location

Repair Bulletin
2017 - 2023

Model

Model 3, Model Y

20 - Safety and Restraint
North America, Asia Pacific

Can Perform (where
permitted)

Configuration
All

Fremont, Giga Austin

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 possible customer concern regarding the operation of
Tesla vehicles. These instructions should only be performed by trained professionals.

This Service Document supersedes SB-23-20-002 R4, dated 8-Jun-23. This new revision, R5, adds front passenger
seat OCS filter module and self-capacitance electrical harness direction. Each content change is marked by a vertical
line in the left margin. Discard the previous version and replace it with this one.

Condition
Certain Model 3 and Model Y vehicles may need a different Occupant Classification System (OCS) installed in the
front passenger seat before servicing its subcomponents.
NOTE: The performance of currently-installed OCS in the front passenger seat is not affected. This procedure is
required before service can be performed to the subcomponents of the front passenger seat.

Correction
Replace the front passenger seat OCS component in order to service seat subcomponents.

Correction Description

Correction

Time

Retrofit SBR in OCS Equipped Front Passenger Seat

S012320002

1.08

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SB-23-20-002
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Part Number
Parts Required 1130363-00-B
1099592-00-F
1489060-93-F
1458818-00-B
If Necessary

Description

Quantity

1R, SBR, BOX, CLIP, M3
1R, SBR, M3
ASY,HARN,1R SEAT,RH,PREM,OCS,STPS
BOLT,PF,M10-1.5x36,[109],G0310[B],SMAT

1
1
1
4

1098408-00-B

Model 3 Only
CLIP, 90666-SDA-A010-M1

3

1496105-00-B

Model Y Only
EDGE CLIP,6MM,1.5-2.5GRP,POM,WH

7

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 1133787-00-A
1132841-00-A
If Necessary

1108272-00-B

KEY, SEAT BELT RELEASE, MODEL 3
M3 1R HEADREST REMOVAL TOOL
Model 3 Only
CAP, LOGIC CONN, INV, 3DU

Shop Supplies
If Necessary Felt tape

Procedure
WARNING: Supplementary Restraint System (SRS) components can be hazardous if not handled properly
(refer to Airbag and Supplementary Restraint System (SRS) Precautions; Model 3, Model Y).
1. [Steps to determine front passenger airbag type]:
•

If the vehicle is equipped with a full suppression front passenger airbag (part number 1077823-00-F or
earlier), perform SB-23-20-001, “Update Front Passenger Airbag to Maintain Compatibility While
Servicing Front Passenger Seat”, and then continue this procedure.

•

If the vehicle is equipped with a safety vent front passenger airbag (part number 1077823-00-G or later),
perform this procedure only.

Front Passenger Airbag Type

Sandwich OCS

SBR OCS

Full Suppression

Compatible

Not Compatible

Safety Vent

Compatible

Compatible

2. On the vehicle touchscreen, touch Controls (vehicle icon) > Software, and then scroll down to display the vehicle
firmware version.
•

If the vehicle is operating with firmware version 2023.2.11 or later, or 2022.45.12 (FSD Beta), continue
this procedure.

•

If the vehicle is operating with a firmware version earlier than 2023.2.11 or 2022.45.12 (FSD Beta),
update to version 2023.2.11 or later, or 2022.45.12 (FSD Beta) (refer to Service Manual procedure
00020003; Model 3, Model Y), and then continue this procedure.

3. Remove the passenger seat cushion foam (refer to Service Manual procedure 13070102; Model 3, Model Y).

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SB-23-20-002
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4. Disconnect the front passenger seat OCS sandwich sensor connector (Figure 1).

Figure 1
5. Remove the push clips (x2) that attach the front passenger seat OCS sandwich sensor to the seat frame
(Figure 2).

Figure 2
6. Remove and discard the front passenger seat OCS sandwich sensor from the seat frame (Figures 3 and 4).

Figure 3

Figure 4

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7. Replace the passenger seat harness with revised part number 1489060-93-F or later (refer to Service Manual
procedure 17101802; Model 3, Model Y). While installing the new seat harness:
•

If a ferrite is installed on the old self-capacitance electrical harness (Figure 5):
NOTE: Disregard the following steps if a ferrrite is not installed and proceed to the next step.
o

Remove the felt tape that attaches the ferrite to the self-capacitance electrical harness, and then
remove the ferrite from the harness and set aside for reinstallation.

o

Once the replacement passenger seat harness is fully installed, position the new self-capacitance
electrical harness into one half of the ferrite, and then clamp the other half of the ferrite closed
(Figure 6).

o

Completely wrap the ferrite and self-capacitance electrical harness together with felt tape to
prevent NVH issues.

Figure 5 – Self-capacitance electrical harness
with ferrite fully installed
•

Figure 6

If a passenger seat OCS filter module is installed on the seat (Figure 7), do not remove the OCS filter
module from the seat. Connect the new seat harness connector to the OCS filter module (Figure 8).
NOTE: Disregard this step if an OCS filter module is not installed and proceed to the next step.

Figure 7 – OCS filter module

Figure 8 – OCS filter module (shown
partially removed for connector clarity
purposes)

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•

Check the passenger seat module female connector (yellow port) to see if it was dislodged or misaligned
during the removal of the old seat harness (Figure 9). If the connector was dislodged or misaligned, press
firmly against the connector until it seats back into place.

Figure 9
8. Install the front passenger seat cushion foam (refer to Service Manual procedure 13070102; Model 3, Model Y).
While installing the foam:
•

Install a new RH front seat resistive occupancy sensor (part number 1099592-00-F or later), and then
route the sensor connector through the foam (Figure 10).

Figure 10
•

Install a new RH front seat resistive occupancy sensor box clip (part number 1130363-00-B or later)
(Figure 11).

Figure 11
9. Locally connect to the vehicle using Toolbox 3.0.

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10. Click the Actions tab, search for “OCS”, and then select OCS1P delete Sandwich and calibrate routine
(Figure 12).

Figure 12
11. Click Run and allow the routine to complete. Select X at the top right of the window to exit once the routine is
complete (Figure 13).

Figure 13
12. Click the Actions tab, search for “Seat calibration”, and then select Right Seat Calibration (Figure 14).

Figure 14

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13. Click Run and allow the routine to complete. Select X at the top right of the window to exit once the routine is
complete and “Pass” is displayed (Figure 15).

Figure 15
14. Disconnect the laptop from the vehicle.

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