Truck Steering Wheel Left Switch Cruise Control Module 22372590 for FH4 FM4

The cruise control module on the left steering wheel of a truck usually has the following main buttons and functions:

♦ On/Off button: Press this button to start or turn off the cruise control function. When the vehicle reaches a suitable speed and the road conditions are suitable for using cruise control, press this button, the cruise system enters the standby state, and the corresponding indicator light on the dashboard will light up; press it again to turn off the cruise function and the indicator light will go out.
♦ Set speed button: In the standby state with cruise control turned on, press this button to set the current vehicle speed to the cruising speed. The vehicle will automatically maintain this speed, and the driver does not need to step on the accelerator pedal to maintain the speed, which reduces the driver's fatigue during long-distance driving.
♦ Acceleration/deceleration button: Generally achieved through the "+" and "-" buttons. Short press the "+" button, the vehicle's cruising speed will increase by a certain amount (such as 1 km/h per press or a fixed increment set by the vehicle); long press the "+" button, the cruising speed will continue to increase rapidly. Similarly, a short press of the "-" button can slightly reduce the cruising speed, while a long press can quickly reduce the cruising speed, making it easier for the driver to adjust the speed according to actual road and traffic conditions.

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