TPMS - School me pls
Thread Starter
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Mountain Pass
Joined: Apr 2016
Posts: 154
Likes: 6
From: Wisconsin Rapids
TPMS - School me pls
So have been Googling around about the F350 TPMS sensors. They are direct and should update the computer that shows the pressures on the dash periodically - or so that’s the info I’ve found.
My situation: I got some wheels and tires that came off an Excursion, swapped them out with my OEM wheels on my ‘18 F350.
Went for a drive to the local restaurant to test out the ride and was fairly certain the TPMS warning lights would come on since the tires that had them are no longer on the truck…. Nothing. Still saying I’ve got tires on there with 65psi in them. (New ones have 50, just filled and checked them)
My question: What am I missing here? Shouldn’t the computer update and let me know something is not right? Not sure how often it updates but I’d assume in 5-6 miles of driving I should have seen something change?
Please school me on these!
My situation: I got some wheels and tires that came off an Excursion, swapped them out with my OEM wheels on my ‘18 F350.
Went for a drive to the local restaurant to test out the ride and was fairly certain the TPMS warning lights would come on since the tires that had them are no longer on the truck…. Nothing. Still saying I’ve got tires on there with 65psi in them. (New ones have 50, just filled and checked them)
My question: What am I missing here? Shouldn’t the computer update and let me know something is not right? Not sure how often it updates but I’d assume in 5-6 miles of driving I should have seen something change?
Please school me on these!
Laughing Gas
Joined: Apr 2003
Posts: 789
Likes: 231
Trying to get balanced tires, I even had my spare on here and there. The spare has no sensor and it wasn't that quick to update.
(not instantaneous, like you think it would with a sensor missing).
I have other Fords that have summer and winter tires. I've installed an entire different set of tires, forgetting to "re-learn" the sensors
occasionally, and the "old" pressures stayed on, appearing normal for quite a while.
(not instantaneous, like you think it would with a sensor missing).
I have other Fords that have summer and winter tires. I've installed an entire different set of tires, forgetting to "re-learn" the sensors
occasionally, and the "old" pressures stayed on, appearing normal for quite a while.
Thread Starter
|
Mountain Pass
Joined: Apr 2016
Posts: 154
Likes: 6
From: Wisconsin Rapids
Trying to get balanced tires, I even had my spare on here and there. The spare has no sensor and it wasn't that quick to update.
(not instantaneous, like you think it would with a sensor missing).
I have other Fords that have summer and winter tires. I've installed an entire different set of tires, forgetting to "re-learn" the sensors
occasionally, and the "old" pressures stayed on, appearing normal for quite a while.
(not instantaneous, like you think it would with a sensor missing).
I have other Fords that have summer and winter tires. I've installed an entire different set of tires, forgetting to "re-learn" the sensors
occasionally, and the "old" pressures stayed on, appearing normal for quite a while.
Fleet Mechanic
Joined: Dec 2016
Posts: 1,807
Likes: 539
From: Florida
If you want a quick update, put the truck into TPMS learning mode. The manual will say to go around and lower pressure until the horn honks, but if you don't have access to a compressor, what good is that?
I use a tool like this:
Put the truck into learning mode and then go to each wheel as directed by the dash, place this sensor by the valve stem and push the button. Horn will honk and then you move on to the next wheel. I do this after tire rotation. This nifty little device also works on the trailer TPMS sensors too.
I use a tool like this:
Put the truck into learning mode and then go to each wheel as directed by the dash, place this sensor by the valve stem and push the button. Horn will honk and then you move on to the next wheel. I do this after tire rotation. This nifty little device also works on the trailer TPMS sensors too.
Thread Starter
|
Mountain Pass
Joined: Apr 2016
Posts: 154
Likes: 6
From: Wisconsin Rapids
If you want a quick update, put the truck into TPMS learning mode. The manual will say to go around and lower pressure until the horn honks, but if you don't have access to a compressor, what good is that?
I use a tool like this: https://www.amazon.com/8C2Z-1A203-Pr...ps%2C97&sr=8-2
Put the truck into learning mode and then go to each wheel as directed by the dash, place this sensor by the valve stem and push the button. Horn will honk and then you move on to the next wheel. I do this after tire rotation. This nifty little device also works on the trailer TPMS sensors too.
I use a tool like this: https://www.amazon.com/8C2Z-1A203-Pr...ps%2C97&sr=8-2
Put the truck into learning mode and then go to each wheel as directed by the dash, place this sensor by the valve stem and push the button. Horn will honk and then you move on to the next wheel. I do this after tire rotation. This nifty little device also works on the trailer TPMS sensors too.
I wasn’t sure how often the system updates which is more of what I was asking.
Laughing Gas
Joined: Apr 2003
Posts: 789
Likes: 231
I suspect it updates quick if it senses a quick pressure loss (assuming a sensor is present and "learned"), but I've never tried pulling
a valve-stem to see what happens. If you take away the sensors (or put 4 different one's on), it probably confuses the system, as it
never expects that in normal ops, so it does nothing for a while.
a valve-stem to see what happens. If you take away the sensors (or put 4 different one's on), it probably confuses the system, as it
never expects that in normal ops, so it does nothing for a while.
Fleet Mechanic
Joined: Dec 2016
Posts: 1,807
Likes: 539
From: Florida
I’ve got a relearn tool and am familiar with that process - Issue is the wheels/tires I changed to I am pretty sure don’t have the direct TPMS in them. (I ordered some, just need to have them installed) as they came off an Excursion. I was just expecting the system to show me the warning since the wheels on the vehicle don’t have TPMS and the other tires and wheels are literally stashed in my barn.
I wasn’t sure how often the system updates which is more of what I was asking.
I wasn’t sure how often the system updates which is more of what I was asking.
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Thread Starter
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Mountain Pass
Joined: Apr 2016
Posts: 154
Likes: 6
From: Wisconsin Rapids
I suspect it updates quick if it senses a quick pressure loss (assuming a sensor is present and "learned"), but I've never tried pulling
a valve-stem to see what happens. If you take away the sensors (or put 4 different one's on), it probably confuses the system, as it
never expects that in normal ops, so it does nothing for a while.
a valve-stem to see what happens. If you take away the sensors (or put 4 different one's on), it probably confuses the system, as it
never expects that in normal ops, so it does nothing for a while.
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