The driver must be cautious in the below situations, because the system may not detect other vehicles or objects in certain circumstances.
- The vehicle drives on a curved road or through a tollgate.
- The sensor is polluted with rain, snow, mud, etc.
- The rear bumper, in which the sensor is located, is covered or blocked with a
foreign matter such as a sticker, a bumper guard, a bicycle stand, etc.
- The rear bumper is damaged, or the sensor is out of the original default position.
- The vehicle height gets lower or higher due to heavy loading in a tailgate, abnormal
tire pressure, etc.
- The vehicle drives in a bad weather such as heavy rain or snow.
- There is a fixed object near the vehicle, such as a guardrail.
- A big vehicle is near such as a bus or truck.
- A motorcycle or bicycle is near.
- A flat trailer is near.
- If the vehicle has started at the same time as the vehicle next to you and has
accelerated.
- When the other vehicle passes at a very fast speed.
- While changing lanes.
- When going down or up a steep, uneven road.
- When the other vehicle approaches very close.
- When a trailer or carrier is installed.
- When the temperature of the rear bumper is very high or low.
- When the sensors are blocked by other vehicles, walls or parking- lot pillars.
- When the detected vehicle also moves back, as your vehicle drives back.
- If there are small things like shopping cart and baby carriage.
- If there is low height vehicle like sport vehicle.
- When other vehicles are close to your vehicle.
- When the vehicle in the next lane moves two lanes away from you OR when the vehicle
two lanes away moves to the next lane from you.
- When driving through a narrow road with many plants.
- When driving on wet surface.
Kia Niro 2017 (DE HEV) Service Manual: Crankshaft Position Sensor (CKPS) Troubleshooting
Signal Waveform
This example shows a typical Crankshaft Position Sensor (CKPS) and Camshaft Position
Sensor (CMPS) waveforms at idle. The PCM controls the injection and ignition timing
by using these signals.
Generally, the CKPS signal is used to detect the piston position whe ...
Kia Niro 2017 (DE HEV) Service Manual: Coolant Repair procedures
Refilling And Bleeding
Never remove the radiator cap when the engine is hot. Serious scalding
could be caused by hot fluid under high pressure escaping from the radiator.
...