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.
2004 Lexus RX 330 AWDFACTORY OEM SERVICE PROCEDURE
Dynamic Laser Cruise Control System DTCS
DYNAMIC LASER CRUISE CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| P0500/21 | VEHICLE SPEED SENSOR CIRCUIT "A" |
| P0503/23 | VEHICLE SPEED SENSOR "A" INTERMITTENT/ERRATIC/HIGH |
| P0571/52 | BRAKE SWITCH "A" CIRCUIT |
| P0607/54 | CONTROL MODULE PERFORMANCE |
| P1615/61 | COMMUNICATION ERROR FROM DISTANCE CONTROL ECU TO ECM |
| P1616/62 | COMMUNICATION ERROR FROM ECM TO DISTANCE CONTROL ECU |
| U0122/64 | LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE |
| U0100/65 | LOST COMMUNICATION WITH ECM/PCM |
| P1575/66 | WARNING BUZZER MALFUNCTION |
| P1578/69 | MALFUNCTION IN BRAKE SYSTEM |
| U0235/71 | COMMUNICATION ERROR FROM LASER RADAR SENSOR TO DISTANCE CONTROL ECU |
| U0235/72 | COMMUNICATION ERROR FROM DISTANCE CONTROL ECU TO LASER RADAR SENSOR |
| P1570/73 | LASER RADAR SENSOR MALFUNCTION |
| P1572/75 | IMPROPER AIMING OF LASER RADAR SENSOR BEAM AXIS |
| P0571/76 | BRAKE SWITCH "A" CIRCUIT |
Factory Service Tools
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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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