Quote:
Originally Posted by UPGrayd
The Errors I had causing the 4x4 light were 55C4 and 54C6.
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The 55C4 is a comms error between the DSC controller and the transfer case controller. Many causes it seems...
The 54C6 is the classic transfer case "oil wear" error and I'm pretty sure it won't trip the 4x4 lamp (on it's own). It indicates that your transfer case need to be drained and refilled with fresh BMW Power Divider Fluid (BMW DTF1). You then need to run a reset procedure on the VTG module to reset this oil wear code (and transfer case adaptions etc.). You cannot do this with INPA - which is the main reason I got DIS up and running. you can also perform this specialised reset via a Foxwell....