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.
2005 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Cruise Control (Dynamic Radar) DTCS
DYNAMIC RADAR CRUISE CONTROL DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC P0500, DTC P0503 | VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION |
| DTC P0571 | STOP LIGHT SWITCH CIRCUIT MALFUNCTION |
| DTC P0607 | INPUT SIGNAL CIRCUIT MALFUNCTION |
| DTC P1615, DTC U1101 | COMMUNICATION ERROR FROM DISTANCE CONTROL ECU TO ECM |
| DTC P1616, DTC U0100 | COMMUNICATION ERROR FROM ECM TO DISTANCE CONTROL ECU |
| DTC P1617 | DISTANCE CONTROL ECU MALFUNCTION |
| DTC P1630, DTC U0122 | COMMUNICATION ERROR FROM VSC TO ECM |
| DTC P1631, DTC U0100 | COMMUNICATION ERROR FROM ECM TO VSC |
| DTC P1575 | WARNING BUZZER MALFUNCTION |
| DTC P1578 | BRAKE SYSTEM MALFUNCTION |
| DTC U0235 | LOST COMMUNICATION WITH CRUISE CONTROL FRONT DISTANCE RANGE SENSOR |
| DTC U1102 | LOST COMMUNICATION WITH RADAR SENSOR |
| DTC P1572 | IMPROPER AIMING OF RADAR SENSOR BEAM AXIS |
| DTC U0126 | LOST COMMUNICATION WITH STEERING ANGLE SENSOR MODULE |
| DTC U0123 | LOST COMMUNICATION WITH YAW RATE SENSOR MODULE |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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