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      02-01-2020, 06:18 PM   #15
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AndrewC1989's Avatar

Drives: 2017 M2 | 2015 328dx
Join Date: Aug 2010
Location: New Jersey

iTrader: (5)

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2017 M2  [5.00]
2015 328d xDrive  [0.00]
Originally Posted by Poochie View Post
I have the Euro switch also, that wasn't a problem, they gave me the car back with an error for the switch, since the vehicle software updated to the original, non-Euro switch mapping and didn't say anything, so wasn't an issue.

I can't speak on the PDC switch or the M1/M2 buttons but I'm going to assume those wouldn't be an issue either.

However, the iDrive controller has its own, unique control unit, so is the iDrive itself and HVAC unit.

Think, any part with it's own control unit needs to be original, factory unit.

So something like the instrument cluster would have its own control unit, so that would also fall under this category.

I hope this makes sense to you.
Yup, that makes a lot of sense. Thanks for the explanation.

Side note: I had the car in for service work with all my coding and mods recently (faulty eccentric shaft actuator) and there wasn't any issue having the part replaced. I guess there wasn't a software update needed, or they were able to only update the required module and didn't have to wipe everything.