Kia Niro: Lane Keeping Assist System (LKAS) / Description and operation


System block diagram

System function

Camera unit of the LKAS processes below function with the video signal inputted


LKAS (Lane Keeping Assist System) : The system is designed to help recognize the lane ahead and to give off a lane departure warning when the vehicle starts moving out of the lane by using the camera image and vehicle signal information.


High Beam Assist (HBA) : Detects head lamp and tail lamp lights of vehicle ahead and turns the high beam ON/OFF.


Speed Limit Information Function (SLIF) : Detects traffic signs by using the camera and displays the speed limit by using the map data from navigation.


It supports Automatic Emergency Braking (AEB) systems.

Lane Keeping Assist System (LKAS)
High Beam Assist (HBA)

Lane Keeping Assist
When detecting light from vehicle in front

Speed Limit Information Function (SLIF)
Automatic Emergency Braking (AEB)

Speed Limit Information
Vehicle and pedestrian detection

System Activation Conditions

LKAS Controller Typical Operating Conditions

Note that operating conditions are tuned to meet the customer requirements .

Vehicle speed within 60 kph – 175 kph

A lane is clearly visible.

Driver is not overriding the system – applying a large steering torque

Directional (including hazard) signals are off.

The lane width is within 2.8m to 4.3m

The driver’s hands are on the steering wheel.

The absolute steering angle is < a given value (e.g 90 degrees).

The maximum allowable time for maximum torque application has not been exceeded. (90 seconds)

Reverse or EPS city mode is not engaged.

No fault is present in the system.

Activation conditions for HBA are as follows:

HBA is activated when the light switch is at 'AUTO' and the high beam switch is ON (push).

HBA is activated when the function is enabled and the vehicle speed is 45 km/h or higher, and automatically deactivated when the vehicle speed is 35 km/h or less.

HBA is not activated in daytime even if the activation conditions are satisfied.

In nighttime, HBA detects the preceding vehicle's lamp light and automatically turns the high beam on or off.

Activation conditions for DAA are as follows:

The function should be enabled on the User Setting Menu (USM) of the cluster.

The function should be enabled and the vehicle speed should be 60 km/h - 175 km/h.

Components and components location
Components 1. LKAS ON/OFF switch 2. Instrument cluster 3. LKAS Unit (MFC) * MFC : Multi Function Camera – Function : LKAS, ...

Repair procedures
Service Point Target Auto Calibration (SPTAC) This procedure provides a way to calibrate the camera by having the service technician align the car to a well lit simulated straight r ...

Other information:

Kia Niro 2017 (DE HEV) Service Manual: Components and components location
Component Location 1. Fender assembly ...

Kia Niro (DE HEV) Owners Manual: Headlamp bulb
WARNING - Halogen bulbs Halogen bulbs contain pressurized gas that will produce flying pieces of glass if broken. Always handle them carefully, and avoid scratches and abrasions. If the bulbs are lit, avoid contact with liquids. Never touch the glass with bare hands. Residual oil ma ...

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