When weird electrical issues pop up on start cycles, look at the Ign S/W as that issue is common across all vehicles since they invented the damn thing in the 60's.. Older models would smoke as the carbon pins shorted out. Now days you get nothing. Hi turns in every parts line across all manufacturers.
As posted, many items that energize with key on, will not work as the s/w fails.
Examples: No voltage moves to starter, ignition, accessories, etc, as the switch is the source of the circuit connection failure. GM actually makes a specialty tool to eliminate that failure test.
At times you can just smack the s/w and it will work for a few cycles until total failure.
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2005 X5 4.8IS
The
Blue ones are always FASTER....
Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green