Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Section 449 (LEXUS Park Assist System): Inspection
- INSPECT ULTRASONIC SENSOR CONNECTOR TERMINALS SPECIFIED CONDITION
Tester connection Condition Specified condition 1 - 2 Constant 10kΩ +/- 2kΩ If resistance is not as specified, replace ultrasonic sensor.
- INSPECT ULTRASONIC SENSOR SWITCH CONTINUITY CONNECTOR TERMINALS SPECIFIED CONDITION
Switch position Condition Specified condition ON 3 - 4 No continuity OFF 3 - 4 Continuity If resistance is not as specified, replace the switch.
- INSPECT ULTRASONIC SENSOR
Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, and check that the buzzer sounds.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.