Switch problems

Hello all,

I have just bought an 07 plate roomster 1.9 TDI 3.

It would seem that practically every switch on the car does not work or works how it should do.

For example the electric windows, the central locking button the parking sensors.

I'm pretty sure it's not the wiring and the problem is located with the switches/sensors.

The million dollar question is are the renowned for switch problems or have I bought a pile of ............

Thanks for reading