how to lower tire pressure threshold so I can run lower pressure without getting a warning?

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ramrodraptor

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Hi All, i'm getting a 'low tire pressure' light on my gen 3 at 30 psi.
How do I program a lower threshold (maybe 25psi) so it does not trigger a low warning light at 30 lbs ? I have forscan.

Thanks in advance !!
 

Oldfart

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If you use the regular configuration in the BCM you should be able to set the PSI directly:

View attachment 375419


If you prefer to use the AsBuilt version:

BdyCM
Front: 726-10-01 - XXXX-XXXX-** (where ** is desired pressure converted to HEX)
Rear: 726-10-02 - **XX-XXXX-XX (where ** is desired pressure converted to HEX)
I had to Google what HEX was, I had never seen that before.
 

SurfRaptor

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This is a great question, and I'm new to this also. In my jeep, I would go down to about 13 PSI in the sand. In the raptor, I was planning on about 18 PSI for the sand with the method wheels bead grip technology. I wouldn't want to set the TPMS to 18 permanently, so is there a way to do this temporality for a trip? For example, the TPMS is disabled when switched into 4x4 or something similar?

Kind of off-topic, but what modes are you guys using for off-road. It seems as soon as I choose "off-road" mode on the dial, the RPM's are up super high but if I just put the truck into regular 4x4 high the RPM's stay on the lower side. Baja mode is a gas guzzler and seems to keep the RPM's way too high. What am I missing here. Sorry to hi-jack this if I did.
 
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ramrodraptor

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hi fellas, im having a hard time finding that screen on forscan
any help would be appreciated very much.
i searched the forscan thread and I couldn't find anything there either.
 

smurfslayer

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hi fellas, im having a hard time finding that screen on forscan
any help would be appreciated very much.
i searched the forscan thread and I couldn't find anything there either.

it’s in the BCM ; BdyCM module config tab that’s illustrated in the picture.
I had to Google what HEX was, I had never seen that before.
6964696F74

;-)
 

EricM

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Do you have the extended license for the Forscan software? You need that to make any changes to the BCM.
 
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