This car was supplied with the 3-button 'diamond' shape keys (open, close,
boot/trunk open). Supposedly these keys have a rechargeable battery that the
car charges whilst in use. Our experience with these keys is that they are
very unreliable. BMW service can find nothing wrong with them, and upon the
last visit, the engineer demonstrated that they work 100%. This does not
reflect our findings after driving 400 miles, locking the car, going for a
10 minute walk, and then trying to unlock the car - which failed.
Fortunately, on the 5th try with the spare key, it opened. Ok, so there
could've been an interfernce problem (but we could lock it), but when we
open the car with the key, the alarm sounds and cannot be disabled by
putting the key in the ignition. The only way to silence the alarm is by the
button on the key. That sounds like a bit of a rant, but I have a question.
Is this a typical scenario with this model's alarm system?
How long does it take to charge the key?