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.
Advanced Smart Cruise Control (ASCC) Radar Sensor Alignment: Notes
Advanced Smart Cruise Control (ASCC) unit detects a vehicle in front and then calculates the distance to the vehicle in front and the relative speed by using the built-in radar sensor.
In order for the radar sensor to operate correctly, it must be properly aligned parallel to the driving direction of the vehicle. For this reason, the radar sensor alignment procedure must be carried out whenever the sensor has been reinstalled or replaced with a new one.
If the sensor alignment procedure is not performed in the conditions mentioned above, the smart cruise control system may not operate correctly.
- The ASCC unit has been reinstalled or replaced with a new one.
- The radar sensor or the surrounding parts have been impacted by collision.
- The sensor cannot detect a vehicle in front.
- The Steering Angle Sensor (SAS) has been replaced or adjusted.
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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.