When you use parking assistance frequently on your BMW auto, PDC malfunction can stem from various causes as mentioned above, including: Wiring and connection failures: loosened connections, corroded wiring, or damaged harnesses can hinder accurate sensor readings leading to sensor issues. Issues with the control module: dysfunctions within the PDC control module can lead to breakdowns in communication between the sensors and the vehicle's control module mechanisms. Sensor problem: the sensors themselves might be damaged due to physical impacts, moisture exposure, or prolonged usage. Calibration errors: improper sensor calibration during maintenance can lead to erroneous distance measurements. Environmental factors: exposure to extreme weather conditions, moisture, or even routine car washes can impact sensor accuracy. Software challenges: glitches in the parking sensor system's software can disrupt its operation, stemming from bugs, outdated firmware, or compatibility conflicts which lead to parking assistance malfunctioning. Active power steering: any problems related to the active power steering system associated with steering wheels can lead to park assist system issues. Parking sensor failures arise from a confluence of factors impacting the ultrasonic sensors responsible for gauging distances around the cars of BMW models. These factors encompass physical damage, software-related complications, control module disruptions, environmental influences, connection problems, and calibration inaccuracies.