Service bulletin T-TT-0730-23
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10236186 |
| Published by NHTSA | 2023-05-15 |
| Manufacturer's number | T-TT-0730-23 |
| Manufacturer's date | 2023-04-05 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
TT: Vehicle may exhibit one or all in combination of the following DTC U115687 or U11B900 or U11B987 or U11BF87 shortly after short pin installed during PDS/PDI.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system
Trouble codes named
U1156, U11B9, U11BF
| TOYOTA CROWN | 2023 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 25V595000 | 2025-09-11. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL |
|---|
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| 22TE09 | 2026-06-04. Warranty extension. Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers’ ownership experience. Toyota is providing extended coverage under this Customer Support Program for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start. |
|---|---|
| 22TE09 | 2026-02-11. Warranty extension. Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers’ ownership experience. Toyota is providing extended coverage under this Customer Support Program for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start. |
| 25TD01 | 2025-10-08. Service campaign. The subject vehicles are equipped with a rear motor unit and an HV Floor Under Wire that provide high voltage to operate the motor. Mud, water, or road salt could potentially enter the HV Floor Underwire connector housing and could cause corrosion over time. Excessive corrosion could cause AM Radio Static during certain driving cycles, or the vehicle may not start. |
| 25TD01 | 2025-10-08. Service bulletin. TECHNICAL INSTRUCTIONS FOR 25TD01 REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2019 - 2024 RAV4 HV (AWD), 2021- 2024 RAV4 PRIME, 2020-2024 HIGHLANDER HV (AWD), 2021-2024 VENZA HV, 2023-2024 CROWN HV VEHICLES |
| 25TD01 | 2025-10-08. Service campaign. The subject vehicles are equipped with a rear motor unit and an HV Floor Under Wire that provide high voltage to operate the motor. Mud, water, or road salt could potentially enter the HV Floor Underwire connector housing and could cause corrosion over time. Excessive corrosion could cause AM Radio Static during certain driving cycles, or the vehicle may not start. |
| 25TD01 | 2025-10-08. Service bulletin. TECHNICAL INSTRUCTIONS FOR 25TD01 REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2019 - 2024 RAV4 HV (AWD) 2021- 2024 RAV4 PRIME 2020-2024 HIGHLANDER HV (AWD) 2021-2024 VENZA HV 2023-2024 CROWN HV |
| 25TD01 | 2025-10-08. Service campaign. The subject vehicles are equipped with a rear motor unit and an HV Floor Under Wire that provide high voltage to operate the motor. Mud, water, or road salt could potentially enter the HV Floor Underwire connector housing and could cause corrosion over time. Excessive corrosion could cause AM Radio Static during certain driving cycles, or the vehicle may not start. |
| 22TE09 | 2025-10-08. Service bulletin. TECHNICAL INSTRUCTIONS FOR CUSTOMER SUPPORT PROGRAM 22TE09 HV FLOOR UNDER WIRE HARNESS AND REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2023 - 2024 MODEL YEAR CROWN |
| 22TE09 | 2025-10-08. Service campaign. Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers’ ownership experience. Toyota is providing extended coverage under this Customer Support Program for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start. |
| T-SB-0058-23 Rev1 | 2025-07-10. Service campaign. The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and repairing refrigerant leaks. |