I know my 20 Overland with 8.4 does not have it.
I heard something about chip shortage but can't verify that. All I know is that I have it now
. Didn't chnage the tpms.... still have oem in aftermarket wheels/tires
Not sure what jscan is.... but my JL Mini could not enable it.
You have to enable it each time you want to use it. If you go into Settings, then Safety and Driver Assistance, you’ll see an option labeled Tire Fill Assist. Check the box next to it, then come back to your apps and it should be enabled now. Note you have to be stopped and in Park as well.
I took a peak at the demo mode of JSCAN, and it appears to be an option (assuming compatible hardware, I’d imagine):
I tried to enable this on mine with JSCAN... no dice. Not sure if I need to also enable/disable something else to make it work. I've reset ECU's, done the "power off, door open, door close, let sit" routine, still nothing.I took a peak at the demo mode of JSCAN, and it appears to be an option (assuming compatible hardware, I’d imagine):
There’s two different features that might be getting confused- Tire Fill Alert, and Selectable Tire Fill Assist. Tire file alert will just alert you when you are filling up low tires, and they have reached the required door placard pressure threshold. Selectable tire fill assist lets you configure for lower thresholds on the fronts and rears, and will alert you when deflating down from the normal placard pressures, and you reach those lower thresholds.
Is the Tire Fill Alert feature meant to only be available to Rubicons? The TSB that was shared seemed limited to Rubicon.There’s two different features that might be getting confused- Tire Fill Alert, and Selectable Tire Fill Assist. Tire file alert will just alert you when you are filling up low tires, and they have reached the required door placard pressure threshold. Selectable tire fill assist lets you configure for lower thresholds on the fronts and rears, and will alert you when deflating down from the normal placard pressures, and you reach those lower thresholds.
In Jscan, try enabling both of these (it appears by the icon next to the settings that they are both radio settings, but the selectable assist should be a vehicle configuration setting):
Otherwise, if that doesn’t work, you would need AlfaOBD to enable the feature, as it’s a far more powerful tool than Jscan or tazer. This is what the configuration looks like in the BCM of a 2020 rubicon using AlfaOBD:
Or, if you’re missing the feature, and still under warranty, they will perform the TSB for free.
As far as the TSB goes, yes only rubicons between those build dates. The feature can be added to any 2020+ JT using capable aftermarket software, though.
Appreciate it! I enabled both features on JSCAN with no change.There’s two different features that might be getting confused- Tire Fill Alert, and Selectable Tire Fill Assist. Tire file alert will just alert you when you are filling up low tires, and they have reached the required door placard pressure threshold. Selectable tire fill assist lets you configure for lower thresholds on the fronts and rears, and will alert you when deflating down from the normal placard pressures, and you reach those lower thresholds.
In Jscan, try enabling both of these (it appears by the icon next to the settings that they are both radio settings, but the selectable assist should be a vehicle configuration setting):
Otherwise, if that doesn’t work, you would need AlfaOBD to enable the feature, as it’s a far more powerful tool than Jscan or tazer. This is what the configuration looks like in the BCM of a 2020 rubicon using AlfaOBD:
Or, if you’re missing the feature, and still under warranty, they will perform the TSB for free.
If I remember right from when I had the TSB done on my early 2020 build, it fl definitely required a sleep cycle or 2, or a deep sleep cycle to get it to come up. I purposely left it at the dealership and didn’t come back until after lunch so it had time to set and I could verify it was there.
Do you recall what is said on the window sticker ? I haven't taken delivery yet, mine is in the shipping process, my order date was 10/21. Im asking because I need to purchase a set of TPMS sensors for an aftermarket set of wheels and I am not sure what part# I need. I thought the 06/2021 and newer called for part# 68339096AB ... but this shows its for the spare wheel and it does not have the STFA functionality in it.... my dilemma is ... I found a set from a private seller, stating they are take offs and they have the same part# as the spare wheel and they DO have the STFA functionality . So I'm still unclear if the 2022 models have this function and it just needs to be activated and does it matter if I use TPMS sensors with the functionality ??? I've attached a picture, the TPMS on the LEFT has the STFA function built in (notice the difference where the valve cap screws down.
build date ... pre or post 06/21 ?
