Tesla, Inc.
Service Bulletin

SB-22-17-005
April 29, 2022

UHF Antenna Wire Rework To Improve
Charge Port Door Response To Charge
Cable Button Press

Classification

Section/Group

Mobile Service

Configuration

Repair Bulletin

17 - Electrical

Cannot Perform

All

Model Year

Model

Country/Region

Build Location

2021

Model S

United States, Canada

Fremont

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
On some Model S vehicles manufactured before June 1, 2021, the charge port door may be unresponsive to a charge
cable button press and may not open because of poor Ultra High Frequency (UHF) antenna performance. However,
the charge port door still opens through the touchscreen, press-to-open (vehicle unlocked), key fob, or mobile app.

Correction
Inspect the vehicle for symptoms related to the condition. If symptoms are present, install a new UHF antenna overlay
wire. If the new overlay wire does not fix the issue, replace the charge port ECU.

Correction Description

Correction

Time

SB-22-17-005 Not Applicable

S012217005

0.0

Overlay UHF Antenna Wire To Improve Responsiveness Of Charge Port Door To
Charge Cable Button Press

S022217005

1.0

Overlay UHF Antenna Wire To Improve Responsiveness Of Charge Port Door To
Charge Cable Button Press And Replace Charge Port ECU

S032217005

1.0

Part Number
Parts Required 1061177-00-B
1115735-00-A
1115736-00-A
1115737-00-A
1684770-00-A
1684771-00-A
If Necessary 1619321-00-C

Description

Quantity

Wire Harness Repair Kit
Terminal Repair Kit 1
Terminal Repair Kit 2
Terminal Repair Kit 3
Box 2: Terminal Kits 2.0
Box 3: Terminal Kits 2.0

As Required
As Required
As Required
As Required
As Required
As Required

ASY. CHARGE PORT CONTROLLER GEN 4, MS EU

1

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

Shop Supplies Electrical tape
Cable tie

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Procedure
1. Remove the rear underhood apron (refer to Service Manual 12251102).
2. Disconnect LV power (refer to Service Manual procedure 17010200).
3. Remove the LH trunk side trim (refer to Service Manual procedure 15245002).
4. Cut the cable tie that attaches the wiring harness loop to the inlet logic branch (Figure 1).

Figure 1
5. Disconnect charge port electrical connector X1400 (Figure 2).

Figure 2
6. Disconnect charge port ECU electrical connector X1496 (Figure 3).

Figure 3

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7. Unpin the purple UHF antenna wire at charge port inlet electrical connector X1400, cavity 13 (Figure 4) by
releasing the connector lock.
CAUTION: Use the proper jig pick to avoid damage to the electrical connector housing.

Figure 4
8. Unpin the purple UHF antenna wire at charge port ECU electrical connector X1496, cavity 12 (Figure 5) by
releasing the connector lock.
CAUTION: Use the proper jig pick to avoid damage to the electrical connector housing.

Figure 5

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9. Cut off the wire terminals at both ends of the purple UHF antenna wire using diagonal cutters, and then use
electrical tape to cover the leftover wire (Figures 6 and 7).

Figure 6

Figure 7

10. Prepare the new UHF antenna overlay wire:
a. Obtain an overlay wire (0.35mm2) 450 mm in length.
b. Obtain new wire terminals 1116824-00-A and 1099424-00-A from the wire harness repair kit.
c.

Peel off approximately 7 mm of wire insulation at both ends of the overlay wire.
CAUTION: Do not remove any wire strands during the stripping of insulation.
NOTE: Make sure enough wire conductor is exposed to reach the center stop of the crimp barrel.

d. Install the wire terminals on both ends of the overlay wire appropriately. For more information, refer to
document SI-17-17-002, Electrical Harness Repair.
11. Install the new wire terminal (1116824-00-A) from the UHF antenna overlay wire into electrical connector X1400,
cavity 13 (Figure 4).
NOTE: Make sure the correct wire terminal 1116824-00-A is being inserted.
NOTE: Make sure the electrical connector TPA is relocked after the wire terminal is inserted.
12. Install the new wire terminal (1099424-00-A) from the UHF antenna overlay wire into electrical connector X1496,
cavity 12 (Figure 5).
NOTE: Make sure the correct wire terminal 1099424-00-A is being inserted.
NOTE: Make sure the electrical connector TPA is relocked after the wire terminal is inserted.

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13. Add electrical tape at each end of the new UHF antenna overlay wire to the existing harness, and then position
the UHF antenna overlay wire relative to connector positions as shown in Figure 8.
CAUTION: Failure to route the UHF antenna overlay wire as instructed may cause lower than expected UHF
performance.
CAUTION: The new UHF antenna overlay wire should be routed in front of the busbars and sit inboard of all
the other inlet wiring.
NOTE: The distance between the center of the electrical tape and the back side of each electrical connector
should be approximately 30 mm (Figure 8).

UHF antenna
overlay wire
(dark gray)
Figure 8
14. Route the remaining LV harness bundle so that the existing harness loop is tucked securely inside the trim cavity
(Figure 9).
CAUTION: Failure to tuck the harness as instructed may cause lower than expected UHF performance.

Figure 9
15. Connect charge port ECU electrical connector X1496 (Figure 3).
16. Connect charge port electrical connector X1400 (Figure 2).

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17. Verify that the UHF antenna overlay wire is properly routed as demonstrated in Figures 10, 11, and 12.

Figure 10 – Wiring harness is correctly routed in front of busbars

Figure 11 – Wiring harness is not correctly
routed (behind busbars)

Figure 12 – Bring the wiring harness to the front
of the busbars

18. Close the liftgate.

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19. Verify that the charge port door opens using the charge port handle button at approximately 12 inches (30 cm)
away from these locations (Figures 13 and 14):
•

Center of the charge port door.

•

Left of the charge port door.

•

Right of the charge port door.

If the charge port door still does NOT function properly, replace the charge port ECU (refer to Service Manual
procedure 44015002).
CAUTION: Keep the new harness routing as instructed in steps 13 and 14 even if the charge port ECU is
being replaced. Replacement of the charge port ECU is not an alternative, but a supplemental step to be
performed if the UHF antenna overlay wire alone is ineffective.

Figure 13

Figure 14
20. Install the LH trunk side trim (refer to Service Manual procedure 15245002).
21. Reconnect LV power (refer to Service Manual procedure 17010200).
22. Install the rear underhood apron (refer to Service Manual 12251102).

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