WARNING: This page is about a different car, the 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.

Connect hand-held tester to (DLC3). See Figure.
Check that shift lever is at P. Turn steering wheel to straight ahead position.
Start engine and check that VSC warning light flashes. If light does not flash, check VSC warning light circuit and Ts terminal circuit. See SYSTEM TESTING .
If a new skid control ECU is installed, start engine and keep vehicle stationary on a flat surface for 3 seconds or more. This should set zero point calibration of yaw rate sensor.
Turn steering wheel either left or right to full lock position and back to straight ahead position. This will check steering angle sensor.
Shift lever to D and drive vehicle at approximately 3 MPH . Turn steering wheel either left or right 90° or more and continue until completing a 180° or more turn. Do not spin wheels. Stop vehicle and shift lever to P. Ensure VSC buzzer sounds for 3 seconds.
If VSC buzzer sounds, sensor check is normal. If buzzer does not sound, check VSC buzzer circuit. Then do sensor check again. See TEST H: VSC BUZZER CIRCUIT under SYSTEM TESTING.
If buzzer still won't sound, there is a malfunction in VSC sensor. Check DTC. If DTC is retrieved, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .

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.

Safety Warning

With Hand-Held Tester

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?