Kia K4: Rear Cross-Traffic Collision-Avoidance Assist (RCCA): / Rear Cross-Traffic Collision-Avoidance Assist malfunction and limitations

• Please remain vigilant, as the Kia K4 may not always display a warning message even if the Rear Cross-Traffic Collision-Avoidance Assist is experiencing reduced operational accuracy.

• The system may not calibrate correctly or operate properly in open, featureless areas immediately after the Kia K4 is started, as it requires environmental references to initialize.

To prevent false alerts or system errors, it is recommended to turn OFF the Rear Cross-Traffic Collision-Avoidance Assist manually when installing or removing a trailer, carrier, or similar attachment. Once the attachment is securely removed, remember to toggle the system back ON to maintain full safety coverage in your Kia K4.

For additional technical details regarding the rear corner radar sensors, please refer to the "Blind-Spot Collision-Avoidance Assist (BCA)" section of your owner's manual.

• Operating near vehicles or structures:

  Structure

  The Rear Cross-Traffic Collision-Avoidance Assist in your Kia K4 may have limited visibility when maneuvering near large vehicles or fixed structures. In such environments, the system might fail to detect a vehicle approaching from the left or right, resulting in a failure to provide a warning or engage the brakes. Always perform a manual check of your surroundings while backing up.

• Complex parking environments:

  In highly congested parking lots, the RCCA system may occasionally detect vehicles that are merely parking or pulling out in the vicinity of your Kia K4 (such as a neighboring vehicle departing, or a vehicle turning nearby). This can lead to unnecessary alerts or unintended brake control. Always maintain awareness of your surroundings while reversing.

• Diagonal parking or maneuvering:

  The detection capability of your Kia K4 may be restricted when backing up at a diagonal angle. Under these conditions, the system may not detect traffic approaching from the sides, and automated warnings or braking may not be initiated. It is your responsibility to monitor your surroundings carefully at all times.

• For safety reasons, please ensure that you turn OFF the Rear Cross-Traffic Collision-Avoidance Assist whenever you are towing a trailer or attaching other rear-mounted accessories to your Kia K4.

• High-intensity electromagnetic interference in the environment may disrupt the radar sensors, causing the Kia K4 system to operate inconsistently.

• Please note that after the engine is started or the rear corner radars are initialized, there may be a brief delay of approximately 3 seconds before the Kia K4 system becomes fully active and operational.

• If you restart your Kia K4 while the sensors are blocked or in a faulted state, the RCCA function will remain in its last active status; however, it may not function properly until the obstruction is cleared.

Any changes or modifications to the equipment in your Kia K4 not expressly approved by the party responsible for compliance could void your authority to operate the equipment.