Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
66 20 515 Removing and installing/replacing a front left ultrasonic transducer
Release the expanding rivet at marked points.
Fold wheel arch panel (1) to one side.
Unfasten plug connection (1) and disconnect.
Unclip ultrasonic transducer from retaining tabs (2).
Installation note:
Retaining tabs (2) must not be damaged!
Make sure ultrasonic sensor is securely seated.
Installation note:
Make sure rubber ring (1) is correctly seated on ultrasonic sensor (2).
Before installation of ultrasonic sensor on wiring harness, clean plug connection!
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.