How to determine problem using MOST

New (to me) '07 RR L322 SC 150K miles
Work completed by me so far: Front air bags/struts, front brakes, full brake fluid flush/bleed, sub woofer, rear diff oil change, transmission oil/filter and pan (3.5 liters only), remove buzz from windshield over 50 MPH, alternator, engine oil and filter. Added running boards and greased rear hatch cables along with new front and rear struts.
To be done: rear air bags/shocks, plugs (if needed), transmission part II (second 3.5 liter flush?), add Bluetooth to aux input.
Question for the group: Is it possible to interpret the MOST Test Form data running in the self diagnosis screen? I'm getting a constant 2 second repetition of "Tx 01 90 50/51..." stream coupled with a low whine coming from the passenger (right) lower dashboard when key in position II and while running.

Thanks

A whine coming from the passenger side is usually the wife

How did you service the 6hp gearbox?

There should be a tleast 6litres in the sump not 3.5!!

Did you correctly fill it?

The ZF requires the use of an IR thermometer and the fluid has to be added in increments 40c is the optimum temp to fill. You have to fill it cold until it flows out the fill hole..

Start her up and run it through the gears pausing for a sec in each gear, then get underneath and wait for it to get to 42c and fill her till it runs out the hole..

Again cycle it through the gears and recheck the level..

Add oil if necessary..