I think somebody once posted the TIS page about how the EWS works, was that maybe you Wayne? Would be nice if had stickies of that kind of reference material!

The fact that it works like that actually might make it easier to diagnose.

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1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)