Hey guy's, im new to the forum and have a question about the OEM nav.. I installed mine and the cursor on the nav screen is always pointing to the east. While driving the screen does not readjust to vehicle direction of travel. Last week all of a sudden it started working so I figured that it needed time to calibrate, but the last couple of days it started doing the same thing again. It seems like the compass inside the nav unit is not working or not getting a signal. The compass in the mirror is working fine and is accurate. It seems that the NAV unit does not know which direction the vehicle is facing.