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Old 01-05-2026, 12:47 PM
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Quote:
Originally Posted by andrewwynn View Post
... if the button key won't crank, hold the valet key right next to the button key when it's in the ignition: if it will crank and especially start that indicates the EWS circuit in the button key has a bad solder joint....
That would explain why my OEM diamond key fob (button key) has been having intermittent no crank, no start problems. I know that there's at least one bad solder joint in it, maybe more. The Valet key has no such problems.

If my X5 wasn't currently down, I'd be using the Valet key and my generic remote-only fob, and finally open up the OEM key to repair it (I can't bring myself to try it, yet, because I fear I'll do more harm than good, hahaha).
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