How to rest PSI dash info?

[paul howard]

My PSI on the dash is showing all 4 tires low (32psi) when I have 39PSI in all four. I cant for the life of me find where to reset the dash PSI so they read correctly. One said a button under the wheel? Nope? Another says I need to use my Android phone/ HUH?

So, how does one correct the PSI the dash is telling me....?

 

[diymirage]

Drive for 5 minutes at a speed over 35 mph should do the trick

 

[paul howard]

I have to no avail...still reads incorrectly.

2016 Ram Sport 1500

 

[turkeybird56]

1. You can use program alphaobd if u have.
2. Go to dealer and let him use tool to recalibrate.
3. Maybe as long as U have access to compressor air down tires a bit, drive around a bit, check readings and air back up and hope system recognizes and resets.
4. Drive around for a time and see if system finally resets.
5. Try another air gauge?
6. Pull battery cable till all systems discharge than reconnect battery. But that also drains modules and could give other issues.
7. Live with it.

Note: There is no button U can push or any combo on wheel or anything I know of in U Connect to reset psi readout on dash. There is for oil change interval in U connect but not for psi readings.

 

[chopperman1]

I would question the gauge you used for setting the PSI before thinking the sensors are inaccurate. If they were faulty they would show dashes. Another thing to keep in mind is if you check the PSI on a hot tire it can/will show almost a 10% difference on a cold tire.

 

[jws123]

I usually have to drive around for a day after filling tires up rams are slow to respond just keep driving it.

 

[Spree]

Maybe your gage is wrong. Fill to 40 or so. I just added air today and mine went off as soon as I started the truck. Last year when it was real cold out all 4 came on because, it was too cold I guess. I brought it in for the night and all was good the next day.

 

[mtofell]

Once the warnings get triggered you have to fill all the way to max or really close and drive around a bit to get them to turn off... then you can let some air out if you like.

On my HD the rears need 80 which sucks to drive with empty. I just went through this as the weather turned cold. warning light came on and I had to go all the way to 80, drove around, lights turned off.... then I aired down to about 75. I think once it's set I can be down to 70 without the whole process starting.

 

[diymirage]

Once the warnings get triggered you have to fill all the way to max or really close and drive around a bit to get them to turn off... then you can let some air out if you like.

On my HD the rears need 80 which sucks to drive with empty. I just went through this as the weather turned cold. warning light came on and I had to go all the way to 80, drove around, lights turned off.... then I aired down to about 75. I think once it's set I can be down to 70 without the whole process starting.

I used alfaOBD to set my "low psi threshold" at 35

Sure does drive a lot smoother like that

 

[Rlaf75]

Could be the gauge reading bad but I would drive the vehicle as normal for a few days. Sometimes it take awhile for the computer to reset. When I change over to my winter tires and wheels the dash reading will be off for awhile. The light won't be on but the reading will be off. I forget about and drive it and within a few days the readings are where we they should be

 

[mtofell]

I used alfaOBD to set my "low psi threshold" at 35

Sure does drive a lot smoother like that

Yeah, I should probably do that but am a bit of a tech-phobic... how much is one of these alfaOBD things? And how many kids, geeks, etc. do I need to operate it?

 

[diymirage]

Yeah, I should probably do that but am a bit of a tech-phobic... how much is one of these alfaOBD things? And how many kids, geeks, etc. do I need to operate it?

Depends one what hardware you have, the program likes to run on android, and costs 50 bucks

then you need an interface, something that allows the android to talk to the truck, those are a little expensive, i got mine second hand for about 50 as well

the good news is, you got a '14 so you dont need a bypass cable

as for dweebs or kids, its kinda cool, even a motorhead like i can do it

 

[62Blazer]

I would verify whatever gauge you are using is accurate. Not sure what brand you are using, but don't expect that $5.99 version that you see up on the counter at the autoparts store to always be right.

 

[paul howard]

gauge is spot on. I use this one for my MC and spot on 36/40 for the MC...I'll ride it around a bit and see if....

TIA to all!

 

[oe542bob]

If you go the AlfaOBD route to reset thresholds to a lower psi, (which I did on my 2018 2500 CTD Limited) you will also need the four digit code to reset the RF Hub.

 

[diymirage]

If you go the AlfaOBD route to reset thresholds to a lower psi, (which I did on my 2018 2500 CTD Limited) you will also need the four digit code to reset the RF Hub.

I dont remember that, but it's kind of a moot point, since you can use alfaOBD to pull that code

 

[markabby]

even here in south kentucky, my tires seem to lose air, when it gets real cold, and all the warnings show up. Driving a while and warming the tires, the air usually increases a couple of pounds. they were at 31lbs the other day

if i need to add air, my settings beep the horn when they reach 36lbs.

or.....

"To reset the tire pressure monitoring system (TPMS) on a 2019 Ram 1500, you can try these steps:

1. Inflate tires: Ensure all tires are inflated to the recommended pressure, as indicated on the driver's side door jamb.
   
   
   
2. Drive: Drive the vehicle at or above 50 miles per hour for about 10 minutes.
   
   
   
3. Press TPMS reset button: With the vehicle off, turn the key to the "On" position but don't start the car. Locate the TPMS reset button, which is usually under the steering wheel, and press and hold it until the tire pressure light blinks three times.
   
   
   
4. Start car: Start the car and wait 20 minutes for the sensor to refresh.
   

If the TPMS light remains on, you can try these other methods:

• Inflate all tires 3 PSI over the recommended amount, then deflate them completely, and reinflate to the recommended pressure.
• Disconnect the positive battery cable with a wrench, turn the car on and honk the horn for about three seconds, then reconnect the battery. "

 

[Rlaf75]

Yeah, I should probably do that but am a bit of a tech-phobic... how much is one of these alfaOBD things? And how many kids, geeks, etc. do I need to operate it?

If you aren't really tech savvy I'd be very careful about using AlfaOBD because there has been threads about people screwing up the trucks computer and having to go to the dealer to fix it. I'm not telling you not to use it I'm just cautioning you about it

 

[62Blazer]

I'm not 100% sure on the architecture and mapping of the TPMS, but would be surprised that all 4 sensors are off by the exact same amount. I "thought" that each sensor was basically a tire gauge that transmits the pressure to the ECM and therefore the calibration was within the sensor. Not that there is some signal being transmitted to the ECM (or TPMS receiver) and it was applying some calculation to it....but again not 100% sure. I have never heard of somebody re-calibrating the sensors so they show a different pressure. This is different than resetting them as several posts above are talking about it. Generally the reset is something you do after rotating or replacing the tires so they know what sensor is in what tire location. The other thing talked about is changing the threshold, which simply means changing at what pressures the lights and warnings come on. That doesn't change what the sensor is reading....32 psi is still 32 psi, it just may change if the warning lights come on at 32 psi.

 

[oe542bob]

Changing the thresholds that I did was on a 2500. That was done so you could run lower TP than what the factory settings would allow. Made the truck ride much smoother. Factory would allow you to set a lower pressure in your ties, but if you aired down to that minimum, if they went below that threshold, then you had to air the tire back up to 80 psi, then drop it back down.
I just used AlfaOBD, set new thresholds, done. Back in 2019 Alfa didn’t have the pin pull, so you had to get it from the dealer.