The rear parking assist system may not operate properly when:
1. Moisture is frozen to the sensor. (It will operate normally when the moisture has been cleared.)
2. The sensor is covered with foreign matter, such as snow or water, or the sensor cover is blocked. (It will operate normally when the material is removed or the sensor is no longer blocked.)
3. Driving on uneven road surfaces (unpaved roads, gravel, bumps, gradient).
4. Objects generating excessive noise (vehicle horns, loud motorcycle engines, or truck air brakes) are within range of the sensor.
5. Heavy rain or water spray exists.
6. Wireless transmitters or mobile phones are within range of the sensor.
7. The sensor is covered with snow.
8. Trailer towing.
The detecting range may decrease when:
1. The sensor is stained with foreign matter such as snow or water. (The sensing range will return to normal when removed.)
2. Outside air temperature is extremely hot or cold.
The following objects may not be recognized by the sensor:
1. Sharp or slim objects such as ropes, chains or small poles.
2. Objects which tend to absorb the sensor frequency such as clothes, spongy material or snow.
3. Undetectable objects smaller than 1 m (40 in.) in height and narrower than 14 cm (6 in.) in diameter.
Operating condition This system will activate when backing up with the ignition switch ON. If the vehicle is moving at a speed over 5 km/h (3 mph), the system may not be activated correctly.
The rear parking assist system may not sound consistently depending on the speed and shapes of the objects detected. The rear parking assist system may malfunction if the vehicle bumper height or sensor installation has been modified or damaged.
Repair procedures Removal 1. Disconnect the negative (-) battery terminal. 2. Open the tailgate. 3. Loosen the high mounted stop lamp mounting nuts (A). 4. Disconnect the washer nozzle (A) and high mounted stop lamp connector (B). 5. Remove the high mounted stop lamp (C).
Components and components location Component Location 1. Seat heater unit 2. Front seat back heater 3. Front seat cushion heater Schematic diagrams Circuit Diagram Repair procedures Inspection 1.Check for continuity and measure the resistance between terminals No 1 and No 4.