MINI uses several radar sensor categories, each optimized for specific ranges and functions:

  • Front Radar Sensor (FRS) / Long-Range Radar (LRR): Typically mounted in the lower front bumper or grille area. Used primarily for Adaptive Cruise Control (ACC), Forward Collision Warning, and Automatic Emergency Braking.
  • Short-Range Radar Sensors (SRR): Front Side Short-Range (e.g., FSSR- Front Left, FSSR- Front Right), Rear Short-Range (e.g., HRSNL – Rear Left, HRSNR – Rear Right). These are corner-mounted behind bumper panels.
  • Mid-Range Radar (MRR): Bridge the gap between short and long-range detection for enhanced urban and highway performance.

These sensors operate in the 76–79 GHz frequency band for high resolution and reliability in various weather conditions common to the Bay Area (fog, rain, coastal moisture).