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Originally Posted by rfx45
It might be possible. 14 miles round trip a day seems like very little driving and the car may not fully charge the battery enough during your drive? You may have been using more power than you are charging in the battery in the past week so it started giving you errors. Also keep in mind, the brakes are electronic and I believe it drains batteries while activated, it uses little power but it still consumes it. How long was the car sitting w/o being driven?
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The parking brake uses a locking screw type actuator, once it is set, no power is needed or applied to maintain the pressure on the rear rotor from inside the piston. It is designed to be "fail safe" even if the battery is removed, and requires power to be applied to be released.