I'm planning on swapping my driver's seat for one that has the electronic lumbar support. My seat is completely manual.
I went through a process of seeing how much BMW would charge to retrofit lumbar support but it was £219 in parts and £575 in labour!
However I found out from them that there are 'low' and 'high' wiring modules. Because my car has electric back windows apparently that means I have the 'high' module and in theory there should a wiring loom under the driver's seat carpet to plug my electric lumbar cable into.
Speaking to an indie, he was concerned that if I swapped the seat for a completely electric one (eg not just the lumbar pump) that I might need some kind of ECU to be fitted.
Does anyone know what 'gotchas' I might come up against or things I should consider in terms of installing seats with complete or partial electrics in place of my current manual ones?