C5 Power Windows Failure

I had a similar problem with my C5. The symptoms sound the same. Before you take things apart, the power window switch might be the problem, like a blown fuse cutting off power. In my case, the driver's side switch was the issue. Did you check the switch?

Regarding the power window switch, what troubleshooting steps did you use to isolate it as the problem? Did you use a multimeter to check conductivity or resistance? Did the error memory point to a switch malfunction, or was it a generic fault code?

I wasn't able to fix it myself. Based on a recommendation, I took my car to a workshop, where they found the faulty switch. I'm not sure if the error pointed directly to the switch. I would recommend consulting a professional.

Based on your advice, I took my C5 to a workshop. The power window switch was defective. The replacement and labor cost 200€. The system now works. Thanks again for your help.