With Manufacturer's Scan Tool
a. Check the indicator light.1. Turn ignition switch ON.
2. Check that height control indicator light and height control OFF indicator light go on for 2 seconds.
If the indicator does not light, inspect the height control OFF indicator light circuit and height control indicator light circuit.
b. In case of using LEXUS hand-held tester:
Check the DTC.
1. Hook up the LEXUS hand-held tester to the DLC3.
2. Turn the ignition switch ON.
3. Read the DTCs by following the prompts on the tester screen.
HINT: Please refer to the LEXUS hand-held tester operator's manual for further details.