Causes of “Unavailable Front Radar Obstruction” warning:
- Dirty or obstructed radar sensor. The front radar sensor is located behind the front bumper and is used for features such as adaptive cruise control, automatic emergency braking, and lane departure warning. If the sensor becomes dirty or obstructed by snow, ice, mud, or debris, the system may disable itself to prevent false readings.
- Faulty radar sensor. The radar sensor itself can fail, either due to a manufacturing defect or wear and tear. If the sensor is faulty, it will not be able to send accurate readings to the vehicle’s computer, which will cause the “Unavailable Front Radar Obstruction” warning to appear.
- Incorrect radar sensor calibration. The radar sensor must be calibrated periodically to ensure that it is accurately measuring distance and speed. If the sensor is not calibrated correctly, it may produce inaccurate readings, which can lead to the “Unavailable Front Radar Obstruction” warning.
- Interference from other electronic devices. Some electronic devices, such as cell phones and radar detectors, can interfere with the radar sensor. If the sensor is experiencing interference, it may not be able to function properly.
Fixes for “Unavailable Front Radar Obstruction” warning:
- Clean the radar sensor. If the radar sensor is dirty or obstructed, clean it with a damp cloth or a vacuum cleaner with a soft brush attachment.
- Remove any objects that may be obstructing the radar sensor. If there is snow, ice, mud, or debris on the front bumper, remove it. If there is a license plate bracket or other object mounted on the front bumper that is blocking the radar sensor, try to reposition it or remove it altogether.
- Have the radar sensor repaired or replaced. If the radar sensor is faulty, it will need to be repaired or replaced by a qualified mechanic.
- Have the radar sensor calibrated. If the radar sensor is not calibrated correctly, have it calibrated by a qualified mechanic.
- Check for interference from other electronic devices. If you are using a cell phone or radar detector, try turning them off and see if the warning message goes away.
If you have tried all of the above and the “Unavailable Front Radar Obstruction” warning message is still appearing, you may need to have the vehicle’s computer system scanned for diagnostic codes. This will help the mechanic to determine the root cause of the problem and recommend a fix.
