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Today, I had my LE in for an oil change. I had been watching my tire pressure on my Navigation screen and was observing numbers between 34 and 38. The guy working on my vehicle informed me that all my tires were at 45!! Has anyone else noticed this? How accurate are the tire pressure monitors? I can't stand the fact that the navigation screen doesn't indicate which tire has which pressure. Now I find out the numbers are very inaccurate! :ugh:
 

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tire pressure

Texas Titan said:
Today, I had my LE in for an oil change. I had been watching my tire pressure on my Navigation screen and was observing numbers between 34 and 38. The guy working on my vehicle informed me that all my tires were at 45!! Has anyone else noticed this? How accurate are the tire pressure monitors? I can't stand the fact that the navigation screen doesn't indicate which tire has which pressure. Now I find out the numbers are very inaccurate! :ugh:
i had the same problem, mine were just over 40 and the tire has a max press or 35 which is kind of odd because it is the recomended tire press .so it makes me wonder could this higher tire pressure be causing my tires to chop so i informed bfg of my situation and they told me to try 32 psi and swap both rear tires around to see if they would run smooth ,i no longer trust the info on my nav, but still love my titan.
 

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I've checked mine numerous times comparing it to my nav screen and the numbers match exactly to what's displayed. Cold or hot.... I would think the dealer could reprogram that part of the nav display, maybe not but it would make sense that the sensors could be nulled out and reset to specs. Please let us know what you all do to get it fixed to help educate myself and others who may run into the same problem someday. Good luck!!
 

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Every Titan has a Low Tire Pressure Warning System. The Low Tire Pressure Warning System will warn the driver (by way of a 10 second buzzer and a light on the instrument cluster) if any tire pressure falls below 28psi. Some Titans come equipped with a monitoring system which displays individual tire pressures as well.

The Low Tire Pressure Warning System must be reset after replacement of a low tire pressure warning transmitter, BCM or tire rotation.

Reading through the service manuals, it appears that there is no way for the end-user to re-initialize the system.

That means that I can't change out my own wheels/tires in my garage and have an active Low Tire Pressure Warning System. Even if I have a second set of OEM wheels/tires, each with their own internal pressure transmitter, I have to go to the dealer to have the system relearn the sensors.

The local dealership tells me that there is no way to perform sensor ID registration without their special tools.

Calling 1.800.NISSAN.1 and speaking with the new vehicle information department in Texas (option 3), the only resident Titan specialist (named Mike) tells me that there is a way to do this manually, but he does not know it.

Calling 1.800.NISSAN.1 and speaking with the Consumer Affairs division in California, I'm told that they'll get back to me...

Hmmphhh...





I just want to change my own tires and not have a warning light on the dash.
 

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Discussion Starter #6
Texas Titan said:
Today, I had my LE in for an oil change. I had been watching my tire pressure on my Navigation screen and was observing numbers between 34 and 38. The guy working on my vehicle informed me that all my tires were at 45!! Has anyone else noticed this? How accurate are the tire pressure monitors? I can't stand the fact that the navigation screen doesn't indicate which tire has which pressure. Now I find out the numbers are very inaccurate! :ugh:
Thanks to everyone who responded. Its hard to believe the system may have to be calibrated everytime you have the tires rotated! I will be going to the dealer shortly and will advise if I find a solution.
 

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Austin said:
The Low Tire Pressure Warning System must be reset after replacement of a low tire pressure warning transmitter, BCM or tire rotation.

Reading through the service manuals, it appears that there is no way for the end-user to re-initialize the system.

That means that I can't change out my own wheels/tires in my garage and have an active Low Tire Pressure Warning System. Even if I have a second set of OEM wheels/tires, each with their own internal pressure transmitter, I have to go to the dealer to have the system relearn the sensors.

The local dealership tells me that there is no way to perform sensor ID registration without their special tools.

I just want to change my own tires and not have a warning light on the dash.
The system does not have to be reset after tire rotation (provided you do not use the spare as part of a 5 tire rotation) or even after mounting new tires as long as the same rims (sensors) are put back on. The system is not smart enough to know what sensor is at what location on the truck so rotating 4 tires has no effect on them. If you use the spare you will have to go to a dealer and have the system reset.

As the post by Austin shows, the sensor is part of the valve stem. Somebody told me the sensors (valve stems) cost $175 each so you really don't want to mess them up changing tires. The shop manual says to unscrew the nut on the stem (after letting all the air out) and push the stem into the tire before removing the tire from the rim to avoid damage to the sender.
 

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KingTitan said:
As the post by Austin shows, the sensor is part of the valve stem. Somebody told me the sensors (valve stems) cost $175 each so you really don't want to mess them up changing tires. The shop manual says to unscrew the nut on the stem (after letting all the air out) and push the stem into the tire before removing the tire from the rim to avoid damage to the sender.
I was quoted $80 so you are advised to be careful when changing tires.
 

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KingTitan said:
The system does not have to be reset after tire rotation (provided you do not use the spare as part of a 5 tire rotation) or even after mounting new tires as long as the same rims (sensors) are put back on.
Unless you have an LE with NAVI package and the pressure monitor system, you are correct - the system doesn't *have* to be reset - but it is advantageous to do so.

The system is definitely smart enough to know which tire is where. Another benefit of having the dealer properly ID the sensors to the BCM is that if one sensor/transmitter becomes faulty, the BCM can tell you which transmitter to replace. There are several fault codes for each corner of the truck.

I was quoted $79 and change per transmitter/sensor from my local dealer.
 

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KingTitan said:
The system does not have to be reset after tire rotation (provided you do not use the spare as part of a 5 tire rotation) or even after mounting new tires as long as the same rims (sensors) are put back on. The system is not smart enough to know what sensor is at what location on the truck so rotating 4 tires has no effect on them. If you use the spare you will have to go to a dealer and have the system reset.

As the post by Austin shows, the sensor is part of the valve stem. Somebody told me the sensors (valve stems) cost $175 each so you really don't want to mess them up changing tires. The shop manual says to unscrew the nut on the stem (after letting all the air out) and push the stem into the tire before removing the tire from the rim to avoid damage to the sender.
I dont think this is correct. I have already had a flat on my SE Titan. I had to use the spare to get to a tire shop. The low pressure indicator activated about 20 seconds before my tire went completely flat. I pulled over and put on the spare. The low pressure indicator light stayed active the entire time the spare was on (about 30 minutes). Once the flat tire was fixed and reinstalled the low pressure light remained on until I drove approximately 25 miles, it then went off and is working fine. I did call Nissan (both my dealer and 1-800 Nissan1) to ask about the resetting of the low pressure light and they told me it would have to be reset by them. I was actually on my way to the dealer when it reset itself.
 

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bg478 said:
I dont think this is correct. I have already had a flat on my SE Titan. I had to use the spare to get to a tire shop. The low pressure indicator activated about 20 seconds before my tire went completely flat. I pulled over and put on the spare. The low pressure indicator light stayed active the entire time the spare was on (about 30 minutes). Once the flat tire was fixed and reinstalled the low pressure light remained on until I drove approximately 25 miles, it then went off and is working fine. I did call Nissan (both my dealer and 1-800 Nissan1) to ask about the resetting of the low pressure light and they told me it would have to be reset by them. I was actually on my way to the dealer when it reset itself.
Sorry to hear about the flat. Good to hear that the system worked.

The key here is that you put the repaired tire and wheel back on the ground so the system would not need to be reset. IF you left the spare on and used the repaired tire as the spare you would have to get the system reset.
 

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KingTitan said:
Sorry to hear about the flat. Good to hear that the system worked.

The key here is that you put the repaired tire and wheel back on the ground so the system would not need to be reset. IF you left the spare on and used the repaired tire as the spare you would have to get the system reset.
Good Point. But, I don't think it would have reset even by the dealer. On my SE the spare tire does not have the pressure monitor. It is the plain old black rubber stem.
 

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According to my dealer, the spare tires do not have the pressure mounted system and should not be used in the rotation. They should only be used as a spare and replaced as soon as possible.

Not sure I like that information, but that is what they told me.
 

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You know these high tech gizmos are great and all till they break. I'd just as soon not have it at all on my truck.
Gotta thank the lawyers out there for protecting the public from ourselves :fu: ; since we're obviously too lazy/ignorant to occasionally check our tires. :rolleyes:

Brian
 

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Texas Titan said:
Today, I had my LE in for an oil change. I had been watching my tire pressure on my Navigation screen and was observing numbers between 34 and 38. The guy working on my vehicle informed me that all my tires were at 45!! Has anyone else noticed this? How accurate are the tire pressure monitors? I can't stand the fact that the navigation screen doesn't indicate which tire has which pressure. Now I find out the numbers are very inaccurate! :ugh:
My readings:


NAV tire pressure indicator: COLD 32 WARM 34

hand dial-type pressure gage: COLD 35 WARM unknown
 

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I've been trying to find threads regarding the difference in the navi tire pressure and a old fashioned hand held tire pressure tool. This was the closest thread I could find. Yesterday, I checked all tires and filled them to 35. I checked my navi 30 seconds after driving away and they were all at 37/38. Is this normal that the hand held differs from the navi sensors? Can the tires heat up 3 psi in 30 seconds? Should I trust the hand held cold temp?
 

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My tire pressures were within a lb or 2 of what the nav screen indicated.
 

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as another poster remarked, you cannot use the spare as a rolling tire and have the system tell you that it is going flat. that does not mean that you can't use it in a 5-wheel rotation, you just have to check the condition and pressure of your tires regularly. if you have a sudden deflation due to severe tire damage, you'll know about it.

I did a little research about this topic, schrader electronics is the vendor for the transmitters and receiver for the system. apparently they have been supplying GM and others for a few years now. I found a DIY page for corvette owners on how to reset the system. using some kind of magnet tool, the transmitters are 'forced' to send a signal out.

anyway, I e-mailed schrader and they told me that you could by a 5th sensor for the spare, you would just have to retrain it at each rotation so it would know which 4 codes to look for on the rolling tires.

so, question of the day is, can this be done by the owner? I think so, it just will take a little more digging. :computern
 

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Austin said:
No, sensor ID cannot be performed by the owner.
so quick to give up! I gave some of my reasons to beleive it might be possible, do you have any reasons to support the NO? I hope you didn't ask a dealer!
 
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