Installation Position of the New Corolla's Reversing Radar?
2 Answers
Installation position of the new Corolla's reversing radar: Beside the fog light trim, on the front wheel fender. Number of radar probes: Four in the front, four in the rear, totaling eight probes. Function of the Corolla's reversing radar: The radar is a safety assistance system for the car. The rear radar is used when reversing, while the front radar is used to prevent the vehicle from being rear-ended by others. The front radar automatically brakes to prevent rear-end collisions between your car and the vehicle in front. The rear corner and center sensor radars activate when the gear shift lever is placed in the R position, while the front corner radar sensors automatically activate when the gear shift lever is not in the P position (for continuously variable transmission) and the vehicle speed is approximately 10 km/h or lower.
Last time I helped my younger brother install a reverse radar on his Corolla, I realized the positioning is quite particular. Typically, the four sensors are evenly distributed on the rear bumper, with an ideal height of 45 to 60 cm from the ground. The outer sensors should be about 10 cm from the edges, while the two middle ones should be spaced similarly. During installation, avoid the internal metal brackets of the bumper to prevent false alarms. It's safest to mark the positions with tape before drilling—misaligned holes can affect detection accuracy. After installation, test each sensor's sensitivity with obstacles. Last time, one sensor was partially blocked by the bumper liner and almost missed detecting the curb while reversing. I recommend finding a repair shop with a lift for installation—working under the car yourself is too cumbersome.
