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DMiller 
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 35048
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 Topic: Three year old Ford Expedition
Posted: 09 Jan 2026 at 6:48am |
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Good friend of ours and I were speaking last night as mentioned blower motor, he noted replaced there old Expedition with a newer one a little over year and half ago. Got thru a close by dealer and was one of the Ford Certified used cars, 1 year warranty as bought. The wife was driving it and all the Aux functions quit, radio, windows, dis have wipers on and working but would not shut off. So to a repair shop as no warranty remaining.
Came to find out the electrical system is split into TWO Separate bodies, engine/drivetrain and what can be considered Accesoiries, has TWO Batteries, Separated Charging Circuits thru a special Module where charges each battery separately, accessory battery was not accepting a recharge where was getting a charge value, replaced battery and all was good again for two weeks. Repeated. So replaced module ar Ford, again not warranty, $488, as well new battery was drained and would not recover so took back to first shop that replaced NC. So far seems good and been a couple months. He is now gunshy of it. Been explained are SEVENTEEN separate modules in their car. Charging Module one of the least expensive and known failure point.
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 35048
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Posted: 09 Jan 2026 at 8:30am |
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Related same to guy I received KW from, he has a newer Jeep, Same, TWO Batteries and independent charge system, his New F550 Diesel THREE Batteries and closer to THIRTY Modules, he is going to trade out ANNUALLY to Semi Annually to keep Warranty and functions as see this even in OTR Semi Trucks.
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Ed (Ont)
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Joined: 08 Nov 2009
Location: New Lowell, Ont
Points: 1548
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Posted: 6 hours 39 minutes ago at 8:39am |
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Crazy. Hard to understand why these manufacturers want to make things so complex. No need for two batteries in a vehicle like that.
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DougG
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Joined: 20 Sep 2009
Location: Mo
Points: 8404
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Posted: 4 hours 49 minutes ago at 10:29am |
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Its gotten Fricken nuts,,,, Ive never believed in buying new,, but if it keeps it under warranty- and they stand behind it, probably how Ill go,,,
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 35048
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Posted: 4 hours 19 minutes ago at 10:59am |
 Ed (Ont) wrote:
Crazy. Hard to understand why these manufacturers want to make things so complex. No need for two batteries in a vehicle like that. |
Two batteries takes Parasite load off the Start System battery and keeps it off the machine to be able to drive after short but longer than normal parked durations was what I was told. The Onboard Control Modules for all the Enter/Info-tainment systems up links and reloads all the time, unless add a battery isolator and reprogram every return to power or add a plugin battery charger to be plugged in for longer durations it is what it is.
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24935
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Posted: 3 hours 24 minutes ago at 11:54am |
gee every EV has TWO batteries......THAT is like, um, totally STUPID !!! Wife's NISSAN 'only' has 8 computers.. the remote start one crapped out, so car could be driven without the key . NISSAN 'experts' couldn't find the problem after 3 tows to 'best dealership in Hamilton, wall of diplomas of the 'factory trained and certified' techs...... ...in the end I READ some NISSAN papers, and my $5 homebuilt 'scanner' SAW the problem module. Idiots......
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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