Hi, my driver power seats and column adjust have gone (had the slow response/click click now nothing) and I swapped over the passenger control unit and found motors working ok so guessing the relays/switches are at fault.

It appears from some online sites that the 3 series E46 models use the same base switch - it looks identical and I can get one where I am a lot cheaper than an E53 version. And I have found a seller who says it works with both cars...

Does anyone know for certain if they are or definitely not interchangeable? My other concern is the column adjust - not sure that was available on the E46?

Thanks...