ADAS technologies are complex, sprawling systems that need proper maintenance to keep them working at peak efficiency. Without correct and regular care, the systems can malfunction, at best leading to driver frustration and at worst, compromising safety.
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"Keep in mind that ADAS technologies are built on the foundation of antilock braking systems (ABS) and electronic stability control (ESC) technologies," says Fred Andersky, director of demos, sales and service training at Bendix. "A fault with the ABS or ESC system means that the ADAS may not be available."
Through the regular use of the vehicle, ADAS components can move or otherwise become compromised. On-wheel speed sensors, for instance, can be susceptible to chassis harness issues such as rubbing and chafing. Wheel-end maintenance can also tamper with the sensor, causing it to fail. The steering angle sensor can also fall out of calibration after regular maintenance such as a front end alignment, or the yaw rate sensor can be incorrectly placed after work on the frame rail or chassis.
"Sometimes, systems can show a diagnostic trouble code (DTC), and a simple key cycle of the ignition key, done off-road in a safe area, can clear it," says Brian Screeton, manager of technical training and service at Bendix. "DTCs like this can be caused by road conditions or the terrain the vehicle is operating in. It's always important to first try and clear the DTC by restarting the vehicle. If it returns after restarting, the vehicle should be taken to a qualified repair facility immediately."
ADAS also uses both cameras and radar to see what's going on around the vehicle. Improper wiring or placement can interfere with both systems. Sensors in these systems can also become blocked by road debris. If you're having problems with your cameras, check the unit to ensure proper placement and wiring, and make sure the camera isn't blocked by debris.
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