The steering wheel key switch requires professional installation and is not plug and play. If the cruise control switch is non-functional, it is not a quality issue; the vehicle may lack a cruise control module or it may be hidden. Each side control button's functionality depends on the support of the in-car DVD system. The control of DISP, trip, and other instruments necessitates high-configuration instruments and proper wiring connections. Wiring order by region and should be adjusted according to the existing wiring at the clock spring. This product is designed for vehicles that require specific installations and configurations. compatibility with your vehicle's systems before installation. Professional assistance is recommended for optimal performance and functionality. Color: Black Material: plastic Package Contents: 1X Multifunction Steering Wheel Cruise Button Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.