Inspection [09/2023 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus TX 550h+ and 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT ELECTRIC PARKING BRAKE SWITCH ASSEMBLY
- Inspect the "TRAIL" mode switch:
- Measure the resistance according to the value(s) in the table below.
*a Component without harness connected
(Electric Parking Brake Switch Assembly)Standard Resistance
Tester Connection Condition Specified Condition Result 6 (B) - 7 (E) Pressed Below 40 Ω Ω 6 (B) - 7 (E) Not pressed 10 kΩ or higher kΩ If the result is not as specified, replace the electric parking brake switch assembly.
- Measure the resistance according to the value(s) in the table below.
- Inspect the "TRAIL" mode switch:
- INSPECT ELECTRIC PARKING BRAKE SWITCH ASSEMBLY (ILLUMINATION)
- Inspect the illumination:
- Apply auxiliary battery voltage to the drive mode select switch (combination switch assembly) and check that the switch illuminates.
*a Component without harness connected
(Electric Parking Brake Switch Assembly)OK
Condition Specified Condition Auxiliary battery positive (+) → Terminal 11 (ILL+)
Auxiliary battery negative (-) → Terminal 15 (ILL-)Illuminates If the result is not as specified, replace the electric parking brake switch assembly.
- Apply auxiliary battery voltage to the drive mode select switch (combination switch assembly) and check that the switch illuminates.
- Inspect the illumination: