Old Prodigy Controller Question/Auto Start Stop Issue

[dclark1946]

I am trying to trouble shoot an auto start stop system failure on a 2017 Ford Escape we use to get our TT in and out of it's back yard parking spot. We trasferred an old (2003 vintage w red led display) Prodigy controller to the Escape and the controller has worked fine. After 7 months the car's auto start stop function has become intermittent either failing to restart when it should or turning itself off altogether.

The AGM battery was reading 12.5 V in the morning before starting and there was a 0.3A current draw from the battery. The car has been to the dealer and the battery was replaced after failing a load test but the failure to restart occured on the third stop coming home from the dealer. The dealer had initially suspected the Prodigy controller.

My question is does anyone have an idea how much standby current this controller should draw? I have not been able to remove the controller from it's holder or release the electrical connector from the back due to the awkward location of the controller and minimal service loop allowed by the dealer installer.


Also if anyone understands how the new Ford 12V charging system works I would appreciate a quick tutorial since charge voltage and current(12.9V /2.0A) after starting the engine seem low to me.

Thanks