Quote:
Originally Posted by skierman64
Can someone translate this to english. Does that mean I'll be able to change to the new Idrive controller or not.
|
It means simply that your car is production 03/08 so it still has the "old" CDMA TCU for the Assist system. What that relates to the OP problem is anybody's guess.
We know for sure that the -048 and the -309 replacement iDrive controllers work in a 05/08 production M3, based on mine and in another member retrofit. We know that the -048 controller is the P/N of both the M3 Sedan and the MY2009 5-Series, and that the M3Coupe and Convertible controller has a different P/N ending in -050, however the -048 controller is already known to work in a M3 Coupe so that eliminates any compatibility issues between the Sedan and the Coupe/Convertible controllers based on P/N. We know that the -048 controller was effective from production 09/08 up to 02/09, and the -309 controller is effective from 03/09 -on. If you ordered a -048 controller after 02/09 you will automatically get a -309 controller. So there is a difference in controllers based on production date and not on body style, at least in P/N. That is different from the -048 and the -050 split.
What we do
not know is what happened with the OP 01/08 production iDrive and the -309 controller that they don't like each other. We know that there was at least a TCU hardware/software change in 04/08 production M3, that
may or may not affect this new -309 controller functionality with the "old" iDrive;
this is just a guess.
It could be as simple as an iDrive update that the OP M3 have not received and the 05/08 production has, or it could be as simple as that particular controller is defective. We do not know.
I will be testing my controller in a 04/08 M3 soon, so that could help a little to verify compatibility depending of production date or iDrive coding version.