Auto Start Stop (ASS) Eliminator

[JesseS]

According to the airline tech's research and another gent who courageously disconnected the BMS, charging voltages higher than 14.5 V have not been seen, I concur with that and have had my BMS disc'd for over a year now and battery remains healthy. Having said that when it does die I'll likely go with flooded LA, but I am expecting the current batt to live long and prosper. What airline tech's tutorial hopefully may reveal what is the relationship with the smart charge system and the bms, and if bms disco negates smart charge. As smart charge was there 1st I believe BMS adds additional functions - which I believe are mainly geared towards ASS support. BTW - a year back when I disco'd the BMS did some research and found nothing that indicates such a bold move would destroy the battery - some of that found on an F-150 forum where a greater number have done it.

Please provide a link to the report, I would like to read it. A 'smart' charge is just a 3 stage charger, Float, Saturation, and boost, and has been around for a long time. Small aircraft use gas regulated LA batteries but AFAIK all large commercial aircraft use Ni-Cad batteries, which use a totally different charging strategy and don't pose as much of a explosion or fire risk as LA batteries.

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[dtech]

Please provide a link to the report, I would like to read it. A 'smart' charge is just a 3 stage charger, Float, Saturation, and boost, and has been around for a long time. Small aircraft use gas regulated LA batteries but AFAIK all large commercial aircraft use Ni-Cad batteries, which use a totally different charging strategy and don't pose as much of a explosion or fire risk as LA batteries.

Hate to disappoint but he hasn't yet produced it - but the thread is current and he says will be available soon. Most if not all AGM absorbed mat batts are protected by a pressure relief valve, battery explosions in autos are rare, would need to be vastly overcharged, valve regulated agms are protected against this, and charging voltage of 14.5 V isn't going to cause anything near a severely overcharged condition.
What some folks fail to grasp it that any decent charging system, be it lead acid, lith-ion, ncad, etc - just like modern battery chargers - sense when a battery is charged to capacity - disco the BMS and the batt will charge at a slightly higher voltage - but it is still governed by a regulator which is charge level aware. So will 14.5 V charge raise internal batt temps - highly likely but to a small degree, conversely a degraded battery of which the BMS is suspected to cause - will also raise internal batt temps because the internal resistance is higher - agms battery are charged above 15V - but as the SOC ramps towards 100% SOC the internal resistance also increases, hence the charge voltage is lowered as a precaution.

 

[Highlander]

Cool devise Frank, but I'll still have to use my LED nightlight. The Polish in me still can't bring myself to spend $29.00 when the nightlight is only $4.00 for a 2 pk. ?

Polish, eh?

Frank

 

[Highlander]

If you're trying to eliminate the auto start stop, just disconnect the small wires on the negative terminal on the battery... Auto Start stop deleted. Then pop switch out and disconect.

Not a great idea, according to a Ford tech.


I'm okay to hit the button when I start the truck.

Frank

 

[OrlandoJay23]

He is talking about the control module under the dash of an F150.

 

[OrlandoJay23]

The F1 50s equipped with the copilot that remove the connector to try to override the auto start. Stop well, then start throwing codes.

 

[OrlandoJay23]

Here.He will explain it better in this video. Same ford tech

 

[OrlandoJay23]

Yes it does! Some people THINK you are better off without it.

Only on the F1 50s with the higher technology packages

 

[MXGOLF]

I did unplug the one little plug on the positive side of the battery and it did stop the ASS from working. I then months later had my Ranger in for service and they plugged it back in due to throwing some codes. That plug is for the BMS and in all reality needs to be plugged in for all the electronic stuff to work properly. Now I think my battery may be getting weak or something because now the ASS doesn't work and I have done nothing to deactivate it?? I sure like not having to push the ASS off button every time I drive but I have a feeling my battery is probably getting weak and it's only a little over two years old. My Ranger is the Lariat model so there is more electronic stuff than a XL or LXT models. Just my 2 cents worth. That may be 5 cents worth.

 

[OrlandoJay23]

I did unplug the one little plug on the positive side of the battery and it did stop the ASS from working. I then months later had my Ranger in for service and they plugged it back in due to throwing some codes. That plug is for the BMS and in all reality needs to be plugged in for all the electronic stuff to work properly. Now I think my battery may be getting weak or something because now the ASS doesn't work and I have done nothing to deactivate it?? I sure like not having to push the ASS off button every time I drive but I have a feeling my battery is probably getting weak and it's only a little over two years old. My Ranger is the Lariat model so there is more electronic stuff than a XL or LXT models. Just my 2 cents worth. That may be 5 cents worth.

Does your lariat have copilot 360? Or technology packages? As it’s a lariat I would say so. Therefore it would be an issue but I believe it’s not the positive side you need to takeoff. I believe it is the negative side. If I remember correctly, I may be wrong, but again I posted above how to do it, and it will set it out in your computer and less turned back on at the dealership.

 

[OrlandoJay23]

Running the battery down after removing that plug it is the process I believe after the BMS detects low battery a few times. It will automatically shut off the ASS by the computer.

 

[dtech]

Yes it does! Some people THINK you are better off without it.

I KNOW my battery is better off without it, and she (female owing to her at times volatile nature) has told that me the BMS just doesn't get her juices flowing, tries to take charge of her.

 

[OrlandoJay23]

ASS is the stupidest idea ever thought of to try to cut back on emissions and an exchange we didn’t have to put extra strain on the starter as well as the charging system and battery. I don’t know what anyone is thinking when they think the ASS is doing anyone any good especially when it was created just a cut corners with the EPA. So to think that it is a good thing U ASS lover lol

 

[MXGOLF]

Does your lariat have copilot 360? Or technology packages? As it’s a lariat I would say so. Therefore it would be an issue but I believe it’s not the positive side you need to takeoff. I believe it is the negative side. If I remember correctly, I may be wrong, but again I posted above how to do it, and it will set it out in your computer and less turned back on at the dealership.

Yes Jayson it does have the tech package so I will probably will pay the $80 and get the ASS stop which a lot of people here have done. I agree it's got to be very hard on starters with the ASS. The brains at Ford and the other manufactures out thought themselves on that one. STUPID.

 

[Dgc333]

Below is a description of the BMS (IBS in Jeep speak) from a Jeep workshop manual. Thing I noticed with my wife's Jeep with the BMS connected is the charge voltage stays at a constant 14.5 volts unlike the Ranger BMS system that reduces the charge voltage down into the 13 volt range and sometimes I to the 12s. IMHO the BMS systems primary function is to ensure that the battery always has enough power to restart the engine after an auto-stop. Seems Ford is putting a large emphasis on reducing the load on the engine for improved mpg by not allowing the alternator to sufficiently charge the battery under certain conditions. Seems like their algorithm is back firing especially for the folks that do infrequent short trips.



The IBS is mounted directly on the 12 VDC battery's negative post.

The IBS is black and has BOSCH printed on it.

The Intelligent Battery Sensor (IBS) serves to record and process measured battery variable values (current, voltage, temperature) for the vehicle power net management system. The Intelligent Battery Sensor (IBS) will calculate the Battery 'state of charge', 'state of health', and 'state of function'.

The mechanical part of the IBS is comprised of the battery clamp for the negative terminal and a captured
bolt to attach the ground cable to. The functional tasks include establishing the electrical contact between the body and the negative battery post, housing the electronic module (actual sensor element) and the provision of an adequate thermal contact between the sensor system temperature sensor and the negative
battery post. The mechanical part of the IBS also protects the sensitive electronic components from external influences.

The IBS is mounted directly on the 12 VDC battery's negative post. The battery post clamp nut is a captive nut and the stud will break if the nut is removed.

The battery sensor measures, calculates and reports battery: voltage, current, temperature, state of charge
and other parameters via a LIN (Local Interconnect Network) bus to a master control module (engine controller, body controller etc). The battery sensor is used to optimize vehicle performance (maintain battery charge, fuel economy etc) via the vehicle's electrical system.

The battery sensor is readable/diagnosable via a "scan tool" that can display all of the available parameters needed for vehicle servicing or trouble shooting.

Information the Intelligent Battery Sensor (IBS) send out on the CAN Bus is:

SOC = Battery State of Charge: Percentage of the residual charge of the battery in respect to its nominal capacity.
SOH = Battery State of Health: A percentage of the real capacity of the battery in respect to the nominal capacity of the battery. It's so called because during the functioning, the battery is subject to
irreversible processes that reduce its capacity to be recharged and to give energy (battery ageing).
SOF = Battery State of Function: The prediction of the minimum voltage that will be reached during a cranking phase.

When the IBS is powered up for the first time or is powered after a power disconnection, it goes into a "recalibration" phase, where the IBS must recognize the type of battery and its characteristics and state. So in this phase the tolerances on the state functions (SOC, SOF, SOH) are greater than in normal working condition.

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