Kia Optima: Brake system / Hill-start assist control (HAC)
A vehicle has the tendency to roll back on a steep hill when it starts to go
after stopping. The Hill-start Assist Control (HAC) prevents 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.
This system provides further enhancements to vehicle stability and steering responses
when a vehicle is driving on a slippery road or a vehicle detects changes in coefficient
of friction between r ...
Check to be sure the parking brake is not engaged and the parking brake
indicator light is out before driving away.
Driving through water may get the brakes wet. They can also get wet when
...
Other information:
If you don’t hear an audible warning sound or if the buzzer sounds intermittently
when shifting the gear to the R (Reverse) position, this may indicate a malfunction
in the parking distance warning-reverse. If this occurs, have your vehicle checked
by an authorized Kia dealer as soon as poss ...
Components and components location
Component Location
1. Outside rear view mirror
Repair procedures
Replacement
Put on gloves to prevent hand injuries.
...