Kia Optima: Brake system / Hill-start assist control (HAC)

Kia Optima DL3 2019-2023 Owner's Manual / Driving your vehicle / 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.

Vehicle stability management (VSM)
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 ...

Good braking practices
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:

Kia Optima DL3 2019-2023 Owner's Manual: Easy access function


The system will move the driver's seat automatically as follows: Without smart key system - It will move the driver’s seat rearward when the ignition key is removed and front driver`s door is opened. - It will move the driver’s seat forward when the ignition key is inserted. With sm ...

Kia Optima DL3 2019-2023 Owner's Manual: Fuses


A vehicle’s electrical system is protected from electrical overload damage by fuses. This vehicle has 2 (or 3) fuse panels, one located in the driver’s side panel bolster, the other in the engine compartment near the battery. If any of your vehicle’s lights, accessories, or controls do ...

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