DTC C1753: Radar Blockage Detected: Notes
CAUTION:
When the ACC/FCM-ECU is replaced, calibrate the radar (refer to RADAR CALIBRATION ).
NOTE:
The radar may not function normally if foreign object or dirt (snow or ice) is adhered on the radar or its surrounding area, or the road condition is bad due to a severe weather (heavy rain or snow). In that case, the system will deactivate the ACC as system protection and display an alert message ("RADAR BLOCKAGE") on the combination meter.