Just got my BMW scanner running and after fixing AUX Fan and cooling overhaul, decide to rescan the X. Got the following messages... I sometimes experience some type of vibration during acceleration, engine at idle is smooth. Everything seems fine except for the vibration... I am still trying to figure what to do. Please help if you have any insight.

In my DME Details, I have the following fault code
5A[090] Exhaust temperature before catalyst, bank 1, singal line, short circuit to negative
5B[091] Exhaust temperature before catalyst, bank 2, singal line, short circuit to negative
5D[093] Exhaust temperature after catalyst, bank 2, singal line, short circuit to negative
3F[063] Control unit self-test 3
53[083] Crankshaft sensor, no signal
3E[062] Solenoid valve, secondary air, short circuit to negative or open circuit

Then from my VTG [ Transfer Box], which sounds more scarier
54C6[21702] Oil abrasion

Thanks!

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2004 3.0 X5 built 06/2004 Premium Pkg & Xenon Only
First owner and 175K miles and counting
First Major cooling overhaul in 5/2014
Sparks plugs, hose and water pump and tranny filter replaced at 90K
Mobile 1 Synthetic all the way with Mann Filter