Sienna electronic parking brake issue

I had a similar issue on my 2018 Volvo XC60. The symptoms you describe point towards a potential brake sensor malfunction or even a system glitch. Have you checked the brake sensor readings? A faulty sensor could trigger the EPB failure.

Thanks for the quick response! I haven't checked the brake sensor readings myself. Where exactly is the sensor located, and is it something I could potentially troubleshoot without specialized tools?

The sensor's location varies, but it's generally integrated into the brake calliper assembly. Given the potential impact on vehicle safety with a faulty EPB, and the error codes stored, I'd strongly recommend taking it to a qualified workshop for diagnostics. The error memory should give a precise indication of the brake fault.

Okay, I appreciate the advice. I took it to the workshop, and it turned out to be a defective electric motor in the brake calliper, just as I suspected. The repair cost came to 505€ Thanks again for your help!