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

Kia Optima DL3 2019-2021 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 2019-2021 Owner's Manual: Air cleaner


Filter replacement The air filter must be replaced when necessary, and should not be washed. While inspecting the air clear element, the air filter can be cleaned using compressed air. 1. Pull out the air cleaner cover. 2. Unlock by turning the locking lever downward. 3. Pull the air ...

Kia Optima DL3 2019-2021 Service and Repair Manual: SRS Control Module (SRSCM)


Description and operation Description The primary purpose of the SRSCM (Supplemental Restraints System Control Module) is to discriminate between an event that warrants restraint system deployment and an event that does not. The SRSCM must decide whether to deploy the restraint sys ...

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