- Ignition "OFF".
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- Check bumper cleanliness: If bumper is contaminated with snow or dust, performance will be impaired.
- Check the condition around the bumper: If metal stickers or foreign substances are attached around the radar, a warning lamp may occur.
- Checking bumper geometry or mounting status: Warning lights may occur if bumper or radar is not properly installed after an accident.
- Check the operation status of the switch: Press the switch to check whether the LED works.
- Check the bumper, bracket, or radar when a diagnostic trouble code occurs.
- Bumper: Mounted, external deformation of the bumper external deformation.
- Bracket: Mounting status, bracket deformation.
- Radar: Poor radar nut engagement, radar foreign material contamination.
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