What Does PSM Failure Mean on a Porsche? Porsche PSM light may come on due to something as simple as low tire pressure, but it can also be on due to a bad ABS wheel speed sensor or come on after you replace the battery. ... In such cases, restarting the vehicle will typically reset the PSM light.Aug 2, 2019
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"Adaptive cruise control with Porsche Active Safe (PAS) This system regulates the speed of your vehicle in line with the speed of the vehicle in front and brakes your vehicle automatically – if necessary, even down to a halt.Apr 14, 2018