![]() ![]() ![]() ![]() Some adaptive cruise control systems merely reduce engine speed to maintain distance, but some of the newest adaptive cruise control systems can also engage the brakes to slow or stop the vehicle. Most recently, with the development of drive-by-wire or electronic throttle control systems (ETCS), cruise control is built into the engine control module (ECM), which controls the throttle body electronically.īasic cruise control systems still require the driver to pay attention to changing road and traffic conditions.Īdaptive cruise control systems, sometimes called smart cruise, use radar or laser detection to maintain safe distances from vehicles ahead. You can increase or decrease cruise speed by tapping a button or lever, and you can cancel cruise control by hitting the Cancel or Off buttons or stepping on the brake.Įarly systems used a vacuum motor and cable, but these eventually changed over to electric motors. When vehicle speed increases or decreases (due to wind or hills, for example), the CCM decreases or increases throttle body opening accordingly.īy modulating engine speed, the CCM can maintain your desired cruising speed on the highway. When you Set cruising speed, the cruise control module (CCM) records the current speed, then takes control of the throttle body to maintain vehicle speed. ![]() When you want to engage cruise control, you first turn the system On with a button or switch. If your vehicles cruise control isnt working, one of the following nine issues may be the root cause.Ĭruise control is a system to maintain vehicle speed without direct driver input. If your car has cruise control, it can reduce stress and help you stay alert on long drives.īenjamin Jerew is an ASE-certified Master Automobile Technician with over a decade of experience in auto repair, maintenance, and diagnosis.Ĭruise control reduces stress and fatigue on long drives, but if the system isnt working properly, it can become dangerous. The CCM might use a VSS feed from the ECM, instrument cluster, or transmission. I think it sucked the pedal into the floor and then stretched out the cable or something. I have never seen such behavior, but for some reason it felt like it went faster than I could ever get it to go LMAO. Gone and wishing I never sold it:doh: 05 qcsb 4x4 Gdd, Smarty, Quadzilla commander. Cummins Isx Cruise Control Not Working Cracked Hose Or. ![]()
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