Question about 2009 Ford Expedition EL

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My message window shows low tire pressure, but it doesn't say which tire. How do I find out which tire has pressure problems, and will the message automatically erase when the tire is fixed?

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Well there's only one way to find out. Go full the tires. The air pump would have a psi reader and each tire if not identical have range of psi to fill to. So you don't have to buy a meter just go to the pump. Or do visual check.

Posted on Dec 29, 2010

  • jwg1987 Feb 12, 2011

    Also, they learn the pressure after driving about 1/2 to 1 mile. I had this issue after a flat tire, we verified all tires and then when I drove it, the message finally cleared after about a mile.

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Yellow triangle with exclamation mark permanently showing


This is the master warning light. It is a warning that another light is lit or a condition has occurred that requires review by the driver. If there is a driver information window a message may be displayed.

Example of other conditions depending on the car is:
  • Low tire pressure
  • low window wash
  • Low fuel warning


26143099-cuwo5vs5donv5atj0gwaggyx-3-0.jpg Hope this helps?

Mar 27, 2016 | Cars & Trucks

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How to tell which tmps is bad


TPMS, or Tire Pressure Monitering System, tends to be very touchy when it comes to the pressure of the tire. I have seen some sensors not read low until the tire was almost PSI from what it should be, and I have seen some tires read low when they were only 1 PSI low. Are you sure its bad? Although its now standard to have TPMS on all vehicles, most only use a dummy light to show that there is a pressure issue with a given tire. So that could just be the issue here, that a tire is a tad bit low on pressure. I would check that first.

If adjusting the pressure doesn't fix things, your next step would be to take it to the tire shop, as there is no way for the consumer to know which tire sensor is bad, short of seeing the sensor snapped off inside the tire.

Hope this helps!!

Oct 22, 2012 | Cars & Trucks

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Pressure system on a 06 h3


That's the tire pressure monitor system that tells you if a tire has low pressure. Since you have different wheels, there may be nothing really wrong. But check all your tires' pressures. One or more may be low. If they are okay, and light won't go off, you may want a mechanic or the dealership to investigate further.

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Message center keeps showing service tire pressure system soon . what is the problem .


The sensors of the tire pressure are located inside of each rim or wheel, sometimes get dirty sending error messages like this or low pressure in one tire

Dec 28, 2010 | 2003 Chrysler Town & Country

1 Answer

Service tire monitor on what is the problem? how do you reset the system?


TIRE PRESSURE MONITOR SYSTEM
The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. If your vehicle has this feature, sensors are mounted on each tire and wheel assembly, except the spare tire. The TPMS sensors monitor the air pressure in your vehicle's tires and transmit tire pressure readings to a receiver located in the vehicle.

The TPMS is designed to alert the driver, if a low tire pressure condition exists. This system also allows the driver to check tire pressure levels using the Driver Information Center (DIC).

When a low tire pressure condition is detected, the TPMS displays the "CHECK TIRE PRESSURE" warning message on the DIC, and at the same time illuminates the low tire pressure warning symbol.

You may notice, during cooler weather conditions, that the tire pressure monitor light, located on the instrument panel cluster, and the "CHECK TIRE PRESSURE" message will appear when the vehicle is first started and then turn off as you start to drive the vehicle. This could be an early indicator that the tire pressures are getting low and need to be inflated to the proper pressure.

Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label. (If your vehicle has tires of a different size than the size indicated on the vehicle placard or tire inflation pressure label, you should determine the proper inflation pressure for those tires.)

As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires is significantly under-inflated.

Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability.

Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver's responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale.

The "CHECK TIRE PRESSURE" warning message and low tire pressure light (telltale) will appear at each ignition cycle until the tires are inflated to the correct inflation pressure.

The Tire and Loading Information label (tire information placard) shows the size of your vehicle's original tires and the correct inflation pressure for your vehicle's tires when they are cold.

Your vehicle's TPMS can alert you about a low tire pressure condition but it does not replace normal tire maintenance.

NOTICE: Do not use a tire sealant if your vehicle has Tire Pressure Monitors. The liquid sealant can damage the tire pressure monitor sensors.

RESETTING THE TPMS IDENTIFICATION CODES
Each TPMS sensor has a unique identification code. Any time you rotate your vehicle's tires or replace one or more of the TPMS sensors, the identification codes will need to be matched to the new tire/wheel position. Each tire/wheel position is matched to a sensor, by increasing or decreasing the tire's air pressure. The sensors are matched to the tire/wheel positions in the following order: LF TIRE (left front tire on the driver's side of the vehicle), RF TIRE (right front tire on the passengers side of the vehicle), RR TIRE (right rear tire on the passengers side of the vehicle), and LR TIRE (left rear tire on the driver's side of the vehicle).

You will have one minute to match the first tire/wheel position, and five minutes overall to match all four tire/wheel positions. If it takes longer than one minute, to match the first tire and wheel, or more than five minutes to match all four tire and wheel positions the matching process stops and you will need to start over.

The TPMS sensor matching process is outlined below:
  1. Set the parking brake.
  2. Turn the ignition switch to "RUN" with the engine off.
  3. Turn the headlamp switch from "OFF" to the parking lamps setting four times within three seconds. A double horn chirp will sound and the TPMS low tire warning light will begin to flash. The double horn chirp and flashing TPMS warning light indicate that the TPMS matching process has started. The TPMS warning light should continue flashing throughout the matching procedure. The "SERVICE TIRE MONITOR" message will be displayed on the Driver Information Center (DIC).
  4. Start with the driver's side front tire.
  5. Remove the valve cap from the valve cap stem. Activate the TPMS sensor by increasing or decreasing the tire's air pressure for 10 seconds, then stop and listen for a single horn chirp. The single horn chirp should sound within 15 seconds, confirming that the sensor identification code has been matched to this tire and wheel position. If you do not hear the confirming single horn chirp, you will need to start over with Step 1. To let air-pressure out of a tire you can use the pointed end of the valve cap, a pencil-style air pressure gage or a key.
  6. Proceed to the passenger's side front tire, and repeat the procedure in Step 5.
  7. Proceed to the passenger's side rear tire, and repeat the procedure in Step 5.
  8. Proceed to the driver's side rear tire, and repeat the procedure in Step 5.
  9. After hearing the confirming horn chirp for the left rear tire, check to see if the TPMS warning light is still flashing. If it is, turn the ignition switch to LOCK to exit the sensor matching process. If the TPMS warning light is not flashing, the five minute time limit has passed and you will need to start the process over beginning with Step 1.
  10. Set all four tires to the recommended air pressure level as indicated on the Tire and Loading Information label.
  11. Put the valve caps back on the valve stems. The spare tire does not have a TPMS sensor. If you replace one of the road tires with the spare, the "CHECK TIRE PRESSURE" message will be displayed on the DIC screen. This message should go off once you re-install the road tire containing the TPMS sensor. The "SERVICE TIRE MONITOR" message is displayed when the TPMS is malfunctioning. One or more missing or inoperable TPMS sensors will cause the service tire monitor message to be displayed.

Nov 23, 2010 | 2006 GMC Yukon

2 Answers

What does it mean when the warning SERV_TPM come on


Hello, SERV-TPM means Service Tire Pressure System. There could be several items to bring up this message. It could be a bad sensor in one of the wheels. It could also be the sensors require programming. The best way to find out is to have the system checked for codes. Before you do any of the above. check the placard on the drivers door for the correct pressure then check each tire with a gage. Thank you

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1 Answer

Why does it show the message: LOW TIRE PRESSURE


there is a tire pressure sensor on each tire check the air pressure on each tire and recalibrate the system each time you put air in any of the 4 tires or if any of the tire gets low air.Its like teaching the system on the present tire air pressure.One thing more the valve on each tire are special valve that have electronic part inside so make sure you dont replace them with an ordinary tire valve.Recalibrating shld be done on workshops with the proper tool

Jan 30, 2010 | 2008 Ford Focus

1 Answer

The message center shows low tire pressure why?


the message center wants you to check air pressure in all of your tires,one or more is low on air.Once you find the one or more that is low you will have to reset that part of the computer.read in the owners manual under low tire pressure and it will tell you how to reset the computer.

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2004 Lexus Ls 430 Low tire


My 2004 Lexus LS 430 has had the light come on several times, even after changing all four tires. There are no tire pressure sensors on my four tires. I was told the car computes tire rotations and since a low pressure tire takes more rotations than a fully inflated tire, the computer puts up a message on the dash.
To reset/turn off the message, put the emergency brake on, start the car and reach below the dash to the right side of your steering column until you feel two buttons in a depressed area under the dash. One button turns on /off your smart key and the other will turn off your tire low pressure message. Depress and hold until the message on your dash goes out and you are good to go. I know this works, I just reset mine a few minutes ago.

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