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      01-08-2020, 02:01 PM   #167
Jim S
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Drives: Z4 M40i G29
Join Date: May 2017
Location: Scotland

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Quote:
Originally Posted by Josh65 View Post
Thanks Jim! Just as I suspected! It was probably a response to premature key fob battery depletion! The dealer didn't realize the change when I dropped the car off this morning. They are also looking into the trunk/alarm issue and didn't seem to know about that yet either!
Yes Josh, there certainly is an issue with premature depletion of the key fob batteries. I have had to replace 4 batteries, two in each key fob, in only 8 months driving just 3,000 miles.

In each case I measured the voltage of the depleted battery and it was around 3.00 volts.The required lithium CR2032 battery is rated at 3 volts and a new battery measures about 3.3 volts. Clearly this is a software issue as the battery should not show depletion until the voltage drops to around 2.5 volts.

I have, again, reported this to my dealer but says he is unable to do anything to correct this.
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