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Author Topic: How to Turn off the TPMS light  (Read 12345 times)

Offline dragonslayer169

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How to Turn off the TPMS light
« on: July 02, 2010, 09:27:17 pm »
My brother just got a 2008 1500 and the TPMS light is on. The dealer said to just drive the truck for 15 minutes and it would reset as the tire pressure is set right. He has driven it more than enough and it hasn't reset yet. We have checked the tire pressure ourselves and it is fine. Does any one know how to reset the TPMS so that the light will turn off?
:cnfg:
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Offline Mitch

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Re: How to Turn off the TPMS light
« Reply #1 on: July 02, 2010, 09:50:13 pm »
The tire pressure has to match the pressure that is on a tag inside the door. My light is on as well, but it goes out after I hit the button after a few hundred miles on the road. Tell him to check the tire pressure, on the spare as well. If the tire pressure matches the pressure on the sticker inside the door, then he has a bad sensor.

2008 6.7

Offline lilfroger

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Re: How to Turn off the TPMS light
« Reply #2 on: July 02, 2010, 10:14:30 pm »
The TIPM should reset once the vehicle is driven for 10 minutes or longer at a speed of more than 15 MPH.

Check the status of the Light Load switch.  It changes the parameters for min air pressure
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Offline Mitch

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Re: How to Turn off the TPMS light
« Reply #3 on: July 03, 2010, 12:53:14 am »
Jo, that is if the pressure is correct in all 5 tires. In light load mode, the amber light should be on.

2008 6.7

Offline Parts/Service

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Re: How to Turn off the TPMS light
« Reply #4 on: July 03, 2010, 01:05:35 am »

If all is working correctly, the light should reset on its own.  Some times the valve stems will go into "park" mode and will have to be set at the dealer with a tool like this one > http://www.revolutionsupply.com/VT55-0DB.aspx

Would bet some tire dealers can do it too...





DIAGNOSIS AND TESTING
When diagnosing a tire pressure issue, first check the Tire Pressure Monitoring (TPM) indicator lamp in the instrument cluster during ignition key ON. From the OFF position, turn the key to ON and check the TPM indicator lamp to observe one of the following:

If after 10 seconds the indicator lamp is illuminating continuously (not flashing), proceed to LOW PRESSURE below.
If after 10 seconds the indicator lamp flashes on/off for 75 seconds, then remains on solid, there is a system fault detected. Proceed to SYSTEM FAULT below.


LOW PRESSURE


NOTE:  Tire pressure may increase from 2 to 6 psi (14 to 41 kPa) during normal driving conditions. Do NOT reduce this normal pressure build up. 

NOTE:  Tire pressure will vary with temperature by about 1 psi (6.9 kPa) for every 12°F (6.5°C). This means that when the outside temperature decreases, the tire pressure will also decrease. Tire pressure should always be set based on cold inflation tire pressure. For details, (Refer to 22 - Tires and Wheels/Tires - Description) 

Check air pressure as necessary in all tires using a known accurate air gauge and adjust to the specification listed on the Tire Inflation Pressure Label (Placard) provided with the vehicle (usually applied to the driver side B-pillar). After adjusting air pressure in a tire on the vehicle, allow approximately two minutes for the message or indicator lamp to go out.

If air pressure in any tire is low, inspect all the tires for leaks. A water “dunk tank�? or other water test may be used to check for a leak around the sensor as long as any water at the valve core is removed once the procedure is completed. The water can be easily expelled from the core area by pushing in on the core for several seconds, allowing escaping air to drive out any moisture. Reinflate the tire as necessary. Always make sure the original (special) valve stem cap is securely installed to keep moisture out of the sensor.

If the indicator lamp is still ON continuously, refer to the appropriate diagnostic information.



SYSTEM FAULT
After an ignition key ON, if a system fault is detected, a chime will sound, and the TPM indicator (telltale) lamp will flash for 75 seconds, then remain on solid. A system fault can occur by many scenarios, including the following:

Signal interference due to electronic devices or driving next to facilities emitting the same Radio Frequencies as the TPM sensors.
Installing some form of aftermarket window tinting that affects radio wave signals.
Accumulation of snow or ice around the wheels or wheel housings.
Using tire chains on the vehicle.
Using wheels not equipped with TPM sensors.

Offline dragonslayer169

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Re: How to Turn off the TPMS light
« Reply #5 on: July 03, 2010, 08:14:37 am »
Awesome, thanks for the information guys. We will check this out and see whats going on. I didn't realize that the spare would have one on it so we never checked that. Would filling the tires with nitrogen affect this as I think his tires are.

thanks
:cnfg:
'03 2500 CTD HO Laramie QC SB, Edge Juice w/ Attitude, BD X-Intake, custom 4" TBE, 35x12.50R17 Nitto Trail Grappler M/T on 17x9 Cragar Soft 8s, Bilsteins all around, ProComp Dual Stabilizers w/ Bilsteins, Custom Diesel SBS, GlowShift 7 Series White guages (Boost, EGT, Trans)

Offline Mitch

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Re: How to Turn off the TPMS light
« Reply #6 on: July 03, 2010, 01:38:46 pm »
Awesome, thanks for the information guys. We will check this out and see whats going on. I didn't realize that the spare would have one on it so we never checked that. Would filling the tires with nitrogen affect this as I think his tires are.

thanks
Nitrogen does not expand with heat or altitude. So maybe.

2008 6.7

Offline Cumminalong

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Re: How to Turn off the TPMS light
« Reply #7 on: July 03, 2010, 02:50:52 pm »
Guys, just for general knowledge.....the air you breathe is like 78% nitrogen.

The main advantage it gives you when filling tires, especially the spare, is that the molecules are larger and don't seep through the pores in the rubber as easily, making them less likely to go flat over time. The best place for it is your spare.
« Last Edit: July 03, 2010, 02:52:48 pm by Cumminalong »

Offline noplugs

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Re: How to Turn off the TPMS light
« Reply #8 on: July 03, 2010, 03:05:28 pm »

Nitrogen does not expand with heat or altitude. So maybe.



Az, ummm, all gases expand or contract when heated or cooled and the tires would expand when going to a higher altitude, even with Nitrogen.

Google Charles Law or Boyles Law


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Offline NickBeek

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Re: How to Turn off the TPMS light
« Reply #9 on: July 05, 2010, 12:57:13 am »
Tire pressure doesn't change "AS MUCH" when full of pure nitrogen with temp changes, or at least that's how they sell it...... ;D

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Offline Mitch

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Re: How to Turn off the TPMS light
« Reply #10 on: July 05, 2010, 04:16:47 am »
Tire pressure doesn't change "AS MUCH" when full of pure nitrogen with temp changes, or at least that's how they sell it...... ;D
Pretty amazing though. Whoever came up with the idea to sell air is a genius.

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Offline dragonslayer169

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Re: How to Turn off the TPMS light
« Reply #11 on: July 07, 2010, 06:48:51 am »
So we checked the tire pressure and all of the tires are set to 40psi which is the recommended for his tires but the door placard states 35. Would being set above the pressure be an issue? I can't see that being the issue but figured I would ask anyways.

When we ran through the test procedure it returned the system fault indicator. When we looked at the possible symptoms listed in Dave's procedure none of them are relevant.

  • Signal interference due to electronic devices or driving next to facilities emitting the same Radio Frequencies as the TPM sensors. Not relevant as it happens all the time.
  • Installing some form of aftermarket window tinting that affects radio wave signals. Not relevant as the only tint is the factory tint on the back. He does have a canopy that came on the truck though
  • Accumulation of snow or ice around the wheels or wheel housings. Not relevant as its sunny, warm, and dry right now
  • Using tire chains on the vehicle. Not relevant as there are no chains currently being used
  • Using wheels not equipped with TPM sensors. Possible as the spare appears to have a normal valve neck (like mine with no TPMS) rather than the same bulky ones that are on the other wheels. Is the system expecting a signal from 5 wheels so it includes the spare or just 4?

We are at a loss and trying to figure it out since it is annoying and the local dodge dealer just keeps saying that it will reset itself and go away.

Another question, is it possible to disable the TPMS so that it doesn't illuminate lamp on the dash and beep, perhaps by removing a fuse?

Thanks,
Steve
:cnfg:
'03 2500 CTD HO Laramie QC SB, Edge Juice w/ Attitude, BD X-Intake, custom 4" TBE, 35x12.50R17 Nitto Trail Grappler M/T on 17x9 Cragar Soft 8s, Bilsteins all around, ProComp Dual Stabilizers w/ Bilsteins, Custom Diesel SBS, GlowShift 7 Series White guages (Boost, EGT, Trans)

Offline Parts/Service

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Re: How to Turn off the TPMS light
« Reply #12 on: July 08, 2010, 02:43:26 am »
Tire Pressure Monitoring Sensors, mounted to each road wheel as part of the valve stem, transmit an RF signal indicating their individual pressure to a receiver located in the Wireless Control Module (WCM), commonly referred to as the Sentry Key Remote Entry Module (SKREEM).These transmissions occur approximately once every minute at speeds over 15 mph

Meaning the spare should not matter.....

 If the TPM system detects that the tire pressure in any road tire is going low, beyond the Low Pressure (lamp) ON threshold (see placard table below), the TPM system will continuously illuminate an indicator lamp. If a system fault is detected, the indicator lamp will flash on/off for 75 seconds and then remains on solid.

If the WCM detects a warning or fault condition at ignition key "on" it will wait ten seconds +/- 10 % before sending the first request to illuminate the yellow telltale. This will assure that the display module has concluded its bulb check period. The display module will request a chime once per ignition cycle for each "warning" or "fault" condition detected. A "warning" or "fault" condition will remain enabled until the problem causing the condition is corrected and removed/reset.

The WCM shall continuously monitor for the receipt of tire pressure RF message transmissions from the wheel sensors during both the ignition key "on" and key "off" cycles. The wheel sensor ID’s and the location of each sensor (e.g. Tire 1, Tire 2 etc.) are stored in the WCM non-volatile memory during the initial Manufacturing Plant Process, or during a service procedure, as required.

The TPM System will continue to warn the driver of low tire pressure as long as the condition exists, and will not turn off the indicator lamp until the tire pressure is at or above the Low Pressure (lamp) OFF threshold (see placard table below). The system will automatically update and the TPM warning lamp will extinguish once the updated tire pressures have been received.

The tire pressure will vary with temperature by about 1 psi (6.9 kPa) for every 12°F (6.5°C). This means that when the outside temperature decreases, the tire pressure will decrease. Tire pressure should always be set based on cold inflation tire pressure (placard pressure). This is defined as the tire pressure after a vehicle has not been driven for more than 3 hours - and in outside ambient temperature. The tire pressure will also increase as the vehicle is driven - this is normal and there should be no adjustment for this increased pressure.


The battery operated tire pressure sensor is both a transmitter and a receiver. The TPM sensor can be forced to transmit if using a special tool such as a TPM-RKE Analyzer, or from a transponder. The TPM-RKE Analyzer has the ability to change the sensor mode and to diagnose a faulty TPM sensor. Using a TPM-RKE Analyzer can take up to a minute to force a transmission from a sensor.

The High Pressure TPM sensor can be in one of the following modes:

• Sleep Mode – A new TPM sensor will be in this mode. If placed on the vehicle as a road tire, the TPM sensor will transmit once every 20 seconds when the vehicle is driven at speeds over 15 mph (24 km/h). If the vehicle is not moving, the sensor will only transmit on a pressure change greater then 2 psi (13.8 kPA). Driving the vehicle continuously at speeds over 15 mph (24 km/h) for more then 4 minutes will change the sensor state into 30 BLOCK MODE. The TPM sensor will not return to SLEEP MODE. Now, if the vehicle has been stopped for 20 minutes, the TPM sensor state will change to PARK MODE.
• Park Mode – This is the correct mode when the vehicle is not moving. The sensor will transmit once every 13 hours to update the WCM, or will transmit on a 2 psi (13.8 kPA) delta change. The sensors will internally take a measurement of the tire pressure every minute to determine a change in tire pressure.
• 30 Block Mode – If the vehicle has not been moving for more then 20 minutes, or if the sensor’s mode was forced to Park Mode using a TPM-RKE Analyzer, the sensor’s operating mode will transition from PARK MODE to 30 BLOCK MODE once the vehicle is driven over 15 mph. In this mode, the sensor will transmit once every 15 seconds when the vehicle is driven at speeds over 15 mph (24 km/h) for the first 30 transmissions. After 8 minutes of continuous driving above 15 mph (24 km/h), the TPM sensor will change to DRIVE MODE.
• Drive Mode – In this mode, the sensor will transmit once every minute when the vehicle is driven at speeds over 15 mph (24 km/h). At any time that the vehicle speed drops below 15mph, the sensor will not transmit. The sensor mode will still be in drive mode when the sensor reaches speeds over 15 mph (24 km/h). If the vehicle has been stationary for more then 20 minutes, the TPM sensor will change to PARK MODE.
Each sensor’s (transmitter) broadcast is uniquely coded so that the wireless control module (WCM) can monitor the state of each of the sensors on the four rotating road wheels. The WCM can automatically learn and store the sensor’s ID while driving “within 10 minutes continuously above 15 m.p.h. (24 Km/h)” after a sensor has been replaced. The vehicle must be stationary for more then 20 minutes in order to initiate the learning sequence.

The sensor IDs can also be programmed using the TPM-RKE Analyzer Tool. Scan each TPM sensor at each road wheel, and store each Sensor ID in the correct location. (LEFT FRONT, LEFT REAR, RIGHT FRONT, and RIGHT REAR) Connect the TPM-RKE Analyzer Tool to the Scan Tool. Then follow the programming steps outlined in the diagnostic Scan Tool for “Program Tire Pressure Sensor ID w/ TPM Tool” under “MISC” for the “WCM/WIRELESS CONTROL MODULE”.

Offline 07FX4Chick

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Re: How to Turn off the TPMS light
« Reply #13 on: December 06, 2010, 06:33:47 pm »
I have having a TPS issue on the new Ram that is ticking me off.  I plan to try this approach this evening!

The TPS light stays on and the TPS computer display in the middle of the gauges seems to be "locked" on also.  I hope it is not a sensor going bad.  I really don't want to have to disconnect the battery as I don't want the PCM set back to default because it is currently programmed for the wheel and tire size (aftermarket).  We have tried adding air, drove around... but I don't think that we stayed above 15mph constantly for 20+ minutes.

Good information!  :2cool:

Offline ROCKET

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Re: How to Turn off the TPMS light
« Reply #14 on: December 15, 2010, 02:47:02 pm »
Tire pressure doesn't change "AS MUCH" when full of pure nitrogen with temp changes, or at least that's how they sell it...... ;D
Pretty amazing though. Whoever came up with the idea to sell air is a genius.
prolly the same guy  who decided to sell water.......lol. I would rip out the sensors at the wheel. There really is no reason for those idiot lights, How long have we as Humans been driving around on tires, day in day out, with no problems. These were initially put on indy cars too warn drivers of a tire failure, which at 200 mph is a good thing, but I'll never see that speed in my truck, less it's my last day on earth.just my :cents:
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