Kia Rio: Brake system / Hill-start assist control (HAC)
The Hill-start Assist Control (HAC) is designed to prevent the vehicle from rolling back by applying the brakes automatically for about 2 seconds. The brakes are released when the accelerator pedal is depressed or after about 2 seconds.
The HAC is activated only for about 2 seconds, so when the vehicle is starting off always depress the accelerator pedal.
WARNING - Maintaining Brake Pressure on Incline
HAC does not replace the need to apply brakes while stopped on an incline. While stopped, make sure you maintain brake pressure sufficient to prevent your vehicle from rolling backward and causing an accident. Don’t release the brake pedal until you are ready to accelerate forward.
CAUTION
- The HAC does not operate when the transmission shift lever is in the P (Park) or N (Neutral) position.
- The HAC activates even though the ESC is off but it does not activate when the ESC has malfunctioned.
When driving It’s a good idea to keep the ESC turned on for daily driving whenever possible. To turn ESC off while driving, press the ESC OFF button while driving on a flat road surface.
This system is designed to provide further enhancements to vehicle stability and steering responses when a vehicle is driving on a slippery road or a vehicle detected changes in coefficient of friction between the right wheels and left wheels when braking.
Other information:
Kia Rio 2017-2023 YB Service Manual: Rear Washer Switch
Repair procedures Inspection Multifunction Switch Inspection [BCM Type] 1. Check for continuity between the terminals in each switch position as shown below. [Left Handle Drive] Switch Switch position Switch terminal
Kia Rio 2017-2023 YB Service Manual: Blower Motor
Repair procedures Inspection 1. Connect the battery voltage and check the blower motor rotation. 2. If the blower motor does not operate well, substitute with a known-good blower motor and check for proper operation.
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