MMI 3G / Navigation Maps update

[philip0001]

I still haven't done the software update yet. Should I do the software update then the maps or does the order not matter.

Software update first, to be able to load new map database.

^ Do you just leave accessories on for 3 hrs and let the battery drain?

you do not have to keep key in ignition ON state or car turned on.... Gas is pricey and if you leave in ignition 2 - you might drain the battery eventually...

Solution is to use KEYFOB (EVEN if you HAVE key-less entry):

First switch off the car so nothing works (you can lock the car and then unlock it so you come to initial state):

Insert the KEYFOB into the switch but DO NOT turn it / press it to ignition position! (The KEYFOB itself - no need to remove the actual key or something)

This way MMI will turn on but all other car aspects will be still off - no ignition 2 state... and this is exactly what we need: only MMI on...

and MMI will not shut off by itself after 15 minutes like it generally does if you leave car like this - because it will be in "Engineering mode"...