How Reset Battery Management System?
Logistics Pro
Joined: Nov 2004
Posts: 4,795
Likes: 47
Just stick a new battery in.
no manual reset has to be done
Technically supposed to wait 15 minutes or something like that, but nothing is harmed if you hook it up and go. Things will reset in necessary the next time it’s off for awhile
can always check your manual
no manual reset has to be done
Technically supposed to wait 15 minutes or something like that, but nothing is harmed if you hook it up and go. Things will reset in necessary the next time it’s off for awhile
can always check your manual
Logistics Pro
Joined: Jan 2001
Posts: 3,740
Likes: 37
From: Central NYS
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New User
Joined: Sep 2017
Posts: 24
Likes: 0
Thanks for the responses. Can't find anything in the owners manual on how to replace battery. Certainly not in the index or table of contents.
So, it would follow that the BMS "resets" every time the vehicle sits idle for 8 or more hours. Is that true?
So, it would follow that the BMS "resets" every time the vehicle sits idle for 8 or more hours. Is that true?
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
Nope, just sitting for 8 hours only resets the charge status. The BMS does not reset with this procedure. This is why a forced BMS reset is in the shop manual. This can be done with IDS or Forscan/Forscan Lite. Its a service function and without it the days in service will not be reset and the BMS will under charge the battery and cut accessory power earlier then it should.
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New User
Joined: Sep 2017
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One more thing....I had the dealer enable the vehicle's "dark", "police" mode for the lighting system. Will this setting be lost without battery power when the battery is replaced?
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Laughing Gas
Joined: Dec 2010
Posts: 1,200
Likes: 45
From: Timbuk3, MI
CrossCut ...Can't find anything in the owners manual on how to replace battery. Certainly not in the index or table of contents. ...
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MAINTENANCE
.
.
.
Battery Management System (If Equipped)
.
.
.
When a battery replacement is required,
the battery should only be replaced with
a Ford-recommended replacement battery
that matches the electrical requirements
of your vehicle. After battery replacement,
or in some cases after charging the battery
with the external charger, the Battery
Management System requires eight hours
of vehicle sleep time (key off with doors
closed) to relearn the new battery state of
charge. Prior to relearning the state of
charge, the Battery Management System
may disable electrical features (to protect
the battery) earlier than normal.
(owner's manual) A digital, searchable desktop document ...
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