Code U0151 on the 2021 Volkswagen Tiguan indicates lost communication with the parking assist module. This module processes data from ultrasonic parking sensors to provide distance warnings and, on equipped models, semi-automated parking capability.
VW Parking Assist Functions
The Tiguan's parking assist system uses ultrasonic sensors in the front and rear bumpers to detect obstacles. The control module processes this data and provides audible warnings as you approach objects. Park Assist can automatically steer the vehicle into parallel or perpendicular parking spaces. Communication loss disables these features.
Feature Disabled
With U0151 present, parking distance warnings won't function - you'll get no beeps when approaching obstacles. The Park Assist feature (if equipped) cannot operate. Warning messages appear on the infotainment display. The rear view camera typically still functions as it uses a different system.
Diagnostic Approach
The parking assist control module is typically located in the rear of the vehicle, near the bumper sensors it processes. Check the module connector for VW's common corrosion issues. Verify power, ground, and CAN communication at the module. Physical bumper damage from parking impacts commonly affects these systems.
Repair Considerations
Inspect bumpers for impact damage that may have affected sensors or wiring. Module connector corrosion is a common VW issue - clean connections carefully. If the module requires replacement, VCDS or ODIS is needed for coding and sensor calibration.