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On-board scales befuddlement

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Old Apr 6, 2025 | 11:28 AM
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On-board scales befuddlement

I don't feel particularly dumb... With the on-board scales system, I understand that there are rotary sensors activated by a lever arm attached to suspension, those feed an analog signal to an analog/digital converter, some processor takes that digital signal and interprets its value with a suspension deflection associated with a particular load weight, that that calculation is supposed to be displayed on the center screen user interface.

I tried my scale for the first time when my son and I cut up a tree and loaded it the truck to go to the green dump. I started by putting the screen on the scales page to see if everything looked ready to go. Seemed to. So I keyed-off, and we loaded the tree for a couple of hours. Turned the truck on, and the scale page didn't who any difference in weight. The scales at the dump said the wood was about 700 pounds. Surely that would have been sensed by the system(?)

OK, so I am particularly dumb. Can some tell me the real procedure? Thanks!
 
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Old Apr 7, 2025 | 08:44 PM
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Old Apr 7, 2025 | 10:12 PM
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Thanks roadpilot for taking the time to find and post that. I saw that in advance, and have watched it since. I didn't leave the motor running for a couple hour while we loaded, that's the only thing I see different than what I did. I guess I'll start it, leave it running, and put some stuff in to see if it reads anything.
 
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Old Apr 8, 2025 | 09:45 AM
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Originally Posted by F250 Platzilla
Thanks roadpilot for taking the time to find and post that. I saw that in advance, and have watched it since. I didn't leave the motor running for a couple hour while we loaded, that's the only thing I see different than what I did. I guess I'll start it, leave it running, and put some stuff in to see if it reads anything.
Looks like you also have to have your tires aired up to max pressure for the scales to work. That would/could be a pain if you want use it every now and then.
 
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Old Apr 8, 2025 | 10:12 AM
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I run my rears at 40psi which is good for a ~1600lb load, in addition to my 2960lb axle weight (checkout tirepressure.org). Knowing the system wanted to see full 65psi pressure, I pumped them up first thing before even driving to my son's house.


 
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Old Apr 8, 2025 | 10:26 AM
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Originally Posted by MikeT5200
Looks like you also have to have your tires aired up to max pressure for the scales to work. That would/could be a pain if you want use it every now and then.
I wonder how this will work on a 450 without any TPMS.
 
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Old Apr 8, 2025 | 10:42 AM
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Originally Posted by F250 Platzilla
I run my rears at 40psi which is good for a ~1600lb load, in addition to my 2960lb axle weight (checkout tirepressure.org). Knowing the system wanted to see full 65psi pressure, I pumped them up first thing before even driving to my son's house.

my truck is 60 cold up front and 50 cold rears
Until I need to carry heavy or tow
I use a chart and the actual contact patch evidence to mske sure tread is as even as possible across width contacting pavement
I don't get any tps warnings either..
scales is weird imo
I just need to spend a day trying and learning
 
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Old Apr 8, 2025 | 10:49 AM
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Originally Posted by robert sloane
snip...I use a chart and the actual contact patch evidence to mske sure tread is as even as possible across width contacting pavement...snip
Do you do the chalk on the tread trick for contact patch?

My truck is set for 60psi front, I run 55 without any warnings. But yeah, I do get them on the rear which I "OK" away every time I drive it (empty, of course).
 
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Old Apr 8, 2025 | 12:47 PM
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Originally Posted by F250 Platzilla
Do you do the chalk on the tread trick for contact patch?

My truck is set for 60psi front, I run 55 without any warnings. But yeah, I do get them on the rear which I "OK" away every time I drive it (empty, of course).
chalk on smooth concrete.
Tire dressing works great to
It's probably waste of time
But I do it for ride empty.
 
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