Is anyone else having issues saving presets for xm on the x940? I save them, then once I leave my car off for about a minuet, they clear back to xm preview.

Could this be caused by the xm tuner not having constant power?

If it doesn't have constant power its not installed correctly.

well for starters, acc power is usually to turn things on, and constant power is usually to keep the memory.

now let me get this right,

( a ) your having memory problems?

( b ) you didn't hook the unit up to constant power as shown in the instructions?

( c ) you thought it would be easier to go online and ask questions instead of following the directions and see if that fixes your problem?

does that about cover it? if so, i think your answer is somewhere in you manual, RTFM!