1988cherokee

Ok I thought you had to change the size in the ABS module; I’ll leave that alone.
I tried to put back the settings manually with same results, I was getting low battery screen all the time. Guessing my battery is going bad? I figured I’d wait and try again later.
Is it 720-12-01 or 726-12-01 ?
thanks for or your help.

Wicked ace

If you are just trying to figure things out or going to spend time in FORscan then hook up a battery charger. With doors open and the radio on it doesn't take long to get the battery into a low state. You don't want to take a chance of corrupting a data transfer. Also remember you have an AGM battery.

1988cherokee

Did not know it had AGM battery, can’t be cheap to replace
thanks

Nicklaus

Nice! Let us know the test result ! In the meantime,
I re-activated auto start stop with Forscan. I also tried to disconnect the connector on the negative pole of battery to achieve a “electrical” way to deactivate start stop: DTC has stored and same message that “vehicule is charging. So the electrical way has the
same effect as Forscan deactivation.

Until I learn more about the collateral effects of Forscan deactivation, I’ll continue to shut it off with the dash button.

Wicked ace

Just a reminder I showed you this option:https://www.autostopeliminator.com/hacks.html
10 minute install and a simple to undo right from your dash.

Nicklaus

Yep, thank you. Still considering this option. I also consider what Airborne Ape just posted (according his experience and testing, BCM still does its job after Forscan auto/stop deactivation).

I'll sleep over it

hollidayt

Last Feb. changed BCM to 726-48-02 x0xx xxxx xxxx with forscan to disable a/s/s. That appears to have worked. Check bat pids with forscan and forscan lite with same results. Can't charge battery above 40%. Twice I used my c-tek maintainer on 16 hour overnights and managed a 100% soc. This morning, bat measured 12.58 volts, 30%soc, with less than .025 amp draw (ground and web cables) with clamp on meter. Truck undisturbed, doors locked, hood ajar 14 hours sleep). I'm beginning to believe that bms is still alive in spite of BCM change.
Best,
Tom

kenny2182

So I've looked through this thread and the forscan spreadsheets til my head was spinning...all I'd like to know is can I change the ambient lighting on my 2018 lariat screw??? And if so, where in the spreadsheets are the changes listed?

Hawkman98

You have to buy each individual lights to take the place of the standard ambient lights that come with the truck. Once you swap all of them out, you then do use Forscan to enable the ambient lighting option. There is instructions and a parts list on here somewhere.

labmaster02

From my experience in testing the BMS while using Forscan to disable the A.S.S is that there are two features to the BMS. 1). it will shut down truck accessories from draining the battery and render the truck unable to start. 2). It allows the alternator be me monitored and disabled to reduce parasitic drag when not needed, this would be a fuel saving feature. Number 2 is what is affected by disabling through Forscan. When A.S.S is disabled my alternator would put out a constant 13.6 volts and never change. With A.S.S reenabled the alternator would vary from 12.6 to 14.2 volts while stopped, with engine running and while driving. It definitely affects this feature, but probably will never be noticed. I had it disabled through Forscan for over a year with no ill affects. I changed over to the Autostopeliminator only because I wanted the option to turn it back on when wanted, so far I haven't used it.