XC90 Parking Aid Failure

I had a similar issue on my XC90. Those ultrasonic sensors are like fussy toddlers; they throw a tantrum if anything is slightly off. Check your rearview camera too. My bet is on faulty wiring or a loose plug somewhere. The whole obstacle detection system relies on clean signals.

So, are you saying you had the exact same symptoms? Where did you find the faulty wiring? Was it near the sensors themselves?

Yep, same symptoms. I'm no mechanic, so I took mine to the workshop. Turned out a cable or plug connection of the component was defective. Cost me 95€ Saved me a headache poking around myself and potentially causing more damage.

Thanks for the tip! I'll take it in. Sounds like chasing wires myself might be a bad idea. Hopefully, it's a quick fix like yours was!