Start/Stop Eliminator Install the Quick Way

[rydfree]

An easier solution... lift the hood unplug the sensor cable on the neg battery terminal. Close the hood and forget about it.

Pulling the plug at the battery will also disable the battery management system. It will cause the alternator to charge 100% all the time. There could be a long-term downside to that with AGM batteries but not sure. I tried the nightlight and old usb charger trick on my 2020 Lariat and neither worked. I ended up using ForScan to turn it off. I'm pretty sure I would have worn the paint off that ASS button if I pushed it every time I started the truck, lol.

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[TJC]

Ummm,

Pulling the plug at the battery will also disable the battery management system. It will cause the alternator to charge 100% all the time. There could be a long-term downside to that with AGM batteries but not sure. I tried the nightlight and old usb charger trick on my 2020 Lariat and neither worked. I ended up using ForScan to turn it off. I'm pretty sure I would have worn the paint off that ASS button if I pushed it every time I started the truck, lol.

Umm, not quite true. It does not disable the BMS, it reverts to the standard BMS charging algorithm very similar to that of the 4G Rangers.

While it may charge the battery 100% of the time depending on the battery state of charge. It does not charge the battery at a constant rate. The charge voltage varies depending on the battery state of charge. When the battery is at a full SOC, the charge rate drops to a sustaining trickle charge.

Keeping any lead acid battery at a 70% - 75% SOC will prematurely kill the battery due to sulfation buildup on the lead plates. I suspect that this is a tradeoff Ford made in the name of increased fuel economy.

I have had a 10 year old AGM battery in my 2005 Ranger that is being charged on the same (or extremely similar) charge patterns as the 2020 Ranger uses with the sensor unplugged. The patterns appear to be identical with a .2v lower charge across the charge spectrum on the 4G. I think the voltage difference reflects that the 4G came with a standard Lead Acid battery vs the 5G being equipped with AGM,

 

[Muscleford]

Ummm,

Umm, not quite true. It does not disable the BMS, it reverts to the standard BMS charging algorithm very similar to that of the 4G Rangers.

While it may charge the battery 100% of the time depending on the battery state of charge. It does not charge the battery at a constant rate. The charge voltage varies depending on the battery state of charge. When the battery is at a full SOC, the charge rate drops to a sustaining trickle charge.

Keeping any lead acid battery at a 70% - 75% SOC will prematurely kill the battery due to sulfation buildup on the lead plates. I suspect that this is a tradeoff Ford made in the name of increased fuel economy.

I have had a 10 year old AGM battery in my 2005 Ranger that is being charged on the same (or extremely similar) charge patterns as the 2020 Ranger uses with the sensor unplugged. The patterns appear to be identical with a .2v lower charge across the charge spectrum on the 4G. I think the voltage difference reflects that the 4G came with a standard Lead Acid battery vs the 5G being equipped with AGM,

Comments?? Wondering if it is really this easy and no ill effects.

 

[Chris M]

Comments?? Wondering if it is really this easy and no ill effects.

Me too.

 

[TJC]

That last 10 year old battery was a Mexican made Optima Yellow top (not known for quality). An AGM spiral that was charged using the 4G BMS system designed for a standard flooded Lead Acid battery.

I have turned off a lot of bells and whistles including disabling and unplugging the cellular modem (TCM) that was calling home to Ford when the truck was shut down. But on the other side of the coin I have Amp Research Auto PowerSteps installed with puddle lamps... and love them.

I do have onboard Desulfators on all my autos. The Optima lasted a little over 11 years, and it would have gone longer except that my Alternator failed 125 miles from my destination on Christmas Eve evening. I drove the last 125 miles on that battery. When I arrived I dared not shut the truck off. Just touching the brake pedal would cause the engine to stumble. During that last 20 miles I went from having one failure light on to having all of them on, to having none of them on. I had called ahead and had an alternator waiting for me. I installed it at my nephews home upon arrival and charged up the battery enough that it would start the truck. I stayed overnight and drove back on Christmas evening. That battery lasted 2 more years. But I know that very deep discharge damaged it enough to shorten its life.

My 2020 Is still running on the original battery without the sensor. It is still very healthy with an internal resistance of ~3.2 mOhms. I waited a year before I started experimenting with settings after getting the "Low Battery" warning messages a few times, usually after letting the truck sit for 3-4 days.

I have not had a warning since. YMMV

The onboard desulfator will double your battery life, and even triple it with a little care.

 

[Sparky2]

I have the 2019 and I installed that same device shortly after I got the truck in early 2020. I used the video as a guide and they do make it look much easier than it is. I think it took me about 15 minutes to install it. I do enjoy not having to push the button every time I start the engine. My wife’s car also has ASS and when I drive it for whatever reason I always forget to push the button.

 

[EJH]

I have the 2019 and I installed that same device shortly after I got the truck in early 2020. I used the video as a guide and they do make it look much easier than it is. I think it took me about 15 minutes to install it. I do enjoy not having to push the button every time I start the engine. My wife’s car also has ASS and when I drive it for whatever reason I always forget to push the button.

I installed a start-stop eliminator in my wife's car also

 

[Sparky2]

I installed a start-stop eliminator in my wife's car also

Unfortunately at this time they do not have a device for her car , a 2022 Hyundai Tuscan.

 

[Bat-1]

a 2022 Hyundai Tuscan.

Ahh yes, the Tuscan, like the Tuscon but more compact to fit Italy's narrow streets. Reliability also questionable

 

[VegasP11]

I also found a free way to disble the AS/S.

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