[pdxpeter]

Buy the one that has the options for your car plus the heated wheel.
1140, 1139, 1142, 1145 - no heated wheels. Dont buy that those.

1141 - heated wheel, no rain sensor, no HBA.
1143 - heated wheel, no HBA.
1144 - heated wheel, no rain sensor.
1146 - supports all the options so get that one if you don't want to worry about it.

Basically, look at the second column. Find the ones that have the options your car has in addition to S248a.

I got the 1143 SZL because my car doesn't have HBA and its was cheaper than 1146.