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.
2022 Lexus NX 450h+ BaseFACTORY OEM SERVICE PROCEDURE
Front Side Radar Sensor System
FRONT SIDE RADAR SENSOR SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC Code | Description |
|---|---|
| C1A16-04 | Front Side Radar Sensor (Module "A") System Internal Failure |
| C1A17-00 | Front Side Radar Sensor (Module "A") Beam Axis Misalignment (Horizontal) |
| C1A18-04 | Front Side Radar Sensor (Module "B") System Internal Failure |
| C1A19-00 | Front Side Radar Sensor (Module "B") Beam Axis Misalignment (Horizontal) |
| U0129-87 | Lost Communication with Brake System Control Module "A" Missing Message |
| U0131-87 | Lost Communication with Power Steering Control Module "A" Missing Message |
| U0293-87 | Lost Communication with Hybrid/EV Powertrain Control Module Missing Message |
| U1235-87 | Lost Communication with Cruise Control Front Distance Range Sensor Front Side "A" Missing Message |
| U1236-87 | Lost Communication with Cruise Control Front Distance Range Sensor Front Side "B" Missing Message |
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.