Quote:
Originally Posted by ///My5UV
Could be something's wrong with the smarttop and it's loading the battery differently than previous ones you've had. Also they might have made a minor change between model years on the Z4 that's interacting badly with it. You'd probably notice something big like a smaller battery, but there could be some more subtle change in the controllers... This is all assuming that the car battery getting low is affecting the CA electronics. Leaving the car on a trickle charger and testing it should tell you more, and so would putting a voltmeter on the battery...
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How do I put a voltmeter on the battery?
Unlike my e93, the Z4 battery is easy to access so I'd love to try this