I'd start by making sure the battery is fully charged and in good order. I had all sorts of electrical issues when mine was on it's way out, even though the car started.
 
The only way to fix this is to replace the IDM or BCU which ever is faulty , if you are lucky it's the IDM(interior fusebox) cos it's cheaper and it's plug and play while the BCU needs complex programming with dedicated diagnostic tool
 

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