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I wonder if they use the smaller battery to lighten the car, I see where the 94R is 15 pounds heavier than the 96R. Gotta meet those EPA numbers.
From an engineer's viewpoint:

The battery used was chosen because it was the lowest cost (cheapest) one that gives "sufficient" performance for the application.

Trust me when I say that manufacturing is all about cost.
 
From an engineer's viewpoint:

The battery used was chosen because it was the lowest cost (cheapest) one that gives "sufficient" performance for the application.

Trust me when I say that manufacturing is all about cost.
Because of the need to increase fuel mileage, they will actually pay extra if you can save weight to improve mileage.

Also, you don't need a ton of CCA to start a car anymore. When was the last time you cranked a car for 30 seconds? If it doesn't start in the first 3, it isn't going to start at all. A high CCA battery in a warm climate will have shorter life than a low CCA battery. We are conditioned to by on CCA when what we really need is reserve capacity because of all the electronic gadgets we have on new cars.
 
I've been designing and building machinery for over 35 years, trust me when I say - to the "guys with the ties" cost is the only factor.

As far as battery ratings go, Reserve capacity is definitely more important than CCA these days.
From what I have observed, the computer controlled startup routine manages to get the engine running within one revolution of the crankshaft even on very cold days.
 
I guess a better way to word my question would be does it reset like a standard MIL trigger the way emission codes do or is it restricted like SRS triggers or ABS modulation?
The reset is not resetting a fault code, you are actually resetting a battery monitoring algorithm back to "zero" so it knows that a new battery has been installed in order to control the charging system accordingly.
This type of function might be available on some professional scanners, but would normally be available only on a Ford-specific scanner.
 
I asked a Ford mechanic today about the battery circuit. He said that the system needs to know where the "health" of a battery is when it's first connected. There is no special programming or fancy reset tool needed although they can do it at the shop if one is triggered after a drained battery or replaced battery event occurs. Works like Check Engine light errors on cars that need to be driven for awhile after resetting or else won't pass emissions immediately. Apparently newer Fords will read and adapt to the new battery if there are no issues with any of the battery cells or unexpected battery drain while engine is off.
 
From what I have been reading, the Battery Monitoring System will self reset if it is allowed to learn the battery State of Charge. Here is one line I found in multiple references to the new BMS in these cars:

If the vehicle battery has been charged or battery replaced, it takes approximately 8 hours for the BCM to learn the new battery state of charge. During this 8 hour period, the vehicle must be undisturbed, with no doors opened or keyless entry buttons pressed. If the vehicle is used before the BCM is allowed to learn the new battery state of charge, engine off load shedding may occur earlier than normal and a message may be displayed.
If the vehicle has been jump started, engine off load shedding can still occur and a message may be displayed until the BCM determines the battery state
of charge is above 40%.
One such thread discussing battery replacement can be found here.
 
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After reading the above referenced F150 forum, it seems tat the only way to get a sure-fire reset of the BLM system is for the dealer tech to plug in a Ford scanner and perform the reset.

What's next - going to a dealer to have genuine Motorcraft air put in your tires, because regular air won't work with the TPMS.
Yep - they really have us over a barrel!!
 
There are two separate things (to reset) mentioned in this thread.

The first one is "Battery State of Charge". This is where BCM (Body Control Module) is keeping track of the current state of charge of the battery. The state of charge is reset when the car is sitting without load (<300mA) for 4-6 hours. During this time BCM will sample battery voltage and calibrate state of charge. Consider this scenario. You left something plugged in the 12 volt outlet and it ran down the battery and the car wouldn't start. So, you removed the battery from the car and charged it up. You reinstalled the battery and the car can be started. However, because the battery was charged outside the car, BCM, had no knowledge of that and the car now showed low battery warning message. The car can be driven but BCM had turned off non-critical systems such as A/C, radio and navigation. You went home, parked the car overnight and next morning, all is well again.

In this first scenario, if the battery was charged while it was still in the car and negative cable (from charger) was connected to vehicle body ground (not battery negative terminal), BMS (Battery Monitoring Sensor) then knew about the charging and BCM knew the correct charging level of battery. You won't get low battery warning.

The second one is "Battery age" if you will. This is where BCM is keeping track of how old the battery is (time in service) and other parameters. The workshop manual didn't say much about what it keeps, however. If a new battery is installed, then, BMS (Battery Monitoring Sensor) needs to be reset so that BCM knows the battery is new. This can only be done using Ford IDS (Integrated Diagnostic System) software.
 
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It boils down to a dealer will be needed to do a proper battery replacement and system reset.
Since most batteries will outlast their warranties, when the time for replacement comes, dealers are going to SLAM us to do what used to be a simple DIY task. What a rip-off!!

( wish I still had my '79 Bronco!)
 
It boils down to a dealer will be needed to do a proper battery replacement and system reset.
Since most batteries will outlast their warranties, when the time for replacement comes, dealers are going to SLAM us to do what used to be a simple DIY task. What a rip-off!!

( wish I still had my '79 Bronco!)
Could always upgrade . lol

Image
 
After reading the above referenced F150 forum, it seems tat the only way to get a sure-fire reset of the BLM system is for the dealer tech to plug in a Ford scanner and perform the reset.

What's next - going to a dealer to have genuine Motorcraft air put in your tires, because regular air won't work with the TPMS.
Yep - they really have us over a barrel!!
It boils down to a dealer will be needed to do a proper battery replacement and system reset.
Since most batteries will outlast their warranties, when the time for replacement comes, dealers are going to SLAM us to do what used to be a simple DIY task. What a rip-off!!
A bit over-exaggerated but I understand your point. If the batteries were micro chipped or RFID'd to accept only Motorcraft batteries then your point would be valid. As it stands, were not quite locked into only Ford batteries and maintenance visits with them.
 
A bit over-exaggerated but I understand your point. If the batteries were micro chipped or RFID'd to accept only Motorcraft batteries then your point would be valid. As it stands, were not quite locked into only Ford batteries and maintenance visits with them.
No, never suggested that only a Motorcraft battery will do (I was being tongue in cheek about Motorcraft air).

But, after a little technical research, the battery life monitor may not be such a bad idea. As a battery "ages" the charging characteristics of the battery do change, so altering the charging voltage a bit may prolong the battery's life.
The BLM is probably part of the system Ford refers to as the "smart alternator".
Only bad part is - the BLM is not resettable by the customer - it should be.
 
I have a couple of external battery tender/conditioners that de-sulfate the plates inside inoperative Pb-acid batteries. These chargers have actually brought several batteries back to life which means they paid for themselves. Would be nice to see a smart alternator system that worked identically.

As a side note here, the mechanic also told me about the conditions and precautions of charging or jump-starting dead batteries in the newer Fords with reference to the grounding locations.
 
This is insane. Ford is trying to get cute with technology to "improve" battery life and usage. The problem is, batteries are the least of my worries. Batteries wear down over time and you replace them -- cheap and easy in most cars. Even if this system gets me an extra year of life out of my battery (which I doubt it will) and/or fewer drains, I'd rather not have to deal with this when I need a new battery.
I'm also not all that pleased with the effort needed to physically replace the battery. As some have said, between these two hassles, I'll probably just buy the new battery from Ford and have them install it when the time comes.
 
I have a couple of external battery tender/conditioners that de-sulfate the plates inside inoperative Pb-acid batteries. These chargers have actually brought several batteries back to life which means they paid for themselves. Would be nice to see a smart alternator system that worked identically.

As a side note here, the mechanic also told me about the conditions and precautions of charging or jump-starting dead batteries in the newer Fords with reference to the grounding locations.
The smart alternator, helps prevent sulfation by very tight regulation of the charging voltage (sometimes even shutting completely off).
Yes - you must jump or charge via the designated posts so the battery monitoring system knows what is going on.
 
Did some more reading.
The battery's present state of charge determines what the optimal charging voltage should be. This is why it is important for the "smart alternator" to know the state of charge in order to adjust its output voltage for optimum charging. As it turns out the applied voltage during any given portion of the charging cycle has a great effect on plate sulfation.
Wrong voltage = lots of sulfation
Right voltage = little sulfation and even removal of previously formed lead sulfate deposits.
Also the "age" of the battery affects the required charging voltage during any given part of the charging cycle.

Seem like the old 13.8 volt charging system is dead. Just like everything else, today's charging systems are adaptive to give optimum performance.

We ain't drivin' Henry's model T no more.
 
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