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.
2007 Lexus LS 460FACTORY OEM SERVICE PROCEDURE
Cruise Control (Dynamic Radar)
DYNAMIC RADAR CRUISE CONTROL DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| C1A01 | Driving Support ECU |
| DTC C1A02 | Vehicle Information Not Obtained |
| DTC C1A03 | Driving Support ECU Internal Logical Error |
| DTC C1A05 | Stop Light Switch Circuit |
| DTC C1A06 | Stop Light Switch Input Circuit |
| DTC C1A0A | Front Radar Sensor Region Code Mismatch |
| DTC C1A10 | Front Radar Sensor |
| DTC C1A11 | Front Radar Sensor Incorrect Axial Gap |
| DTC C1A14 | Front Radar Sensor Beam Axis Not Adjusted |
| DTC C1A40 | ENG / EHV Device |
| DTC C1A41 | Brake Request Value Mismatch between ENG / EHV and Driving Support ECU |
| DTC C1A4A | Skid Control Buzzer Circuit |
| DTC U0100 | Lost Communication with ECM/ PCM "A" |
| DTC U0122 | Lost Communication with Vehicle Dynamics Control Module |
| DTC U0123 | Lost Communication with Yaw Rate Sensor Module |
| DTC U0126 | Lost Communication with Steering Angle Sensor Module |
| DTC U0235 | Lost Communication with Cruise Control Front Distance Range Sensor |
| DTC U1104 | Lost Communication with Driving Support ECU |
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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