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so I recently bought a 2008 limited. noticed while scrolling through the menus that the passenger rear did not show a tire pressure while the other three did, so I figure one of the TPMS is bad and I will fix it when I get new tires. well over the course of the first week the pressure in the drivers front dropped from 42 down to 28... great I got a leak in my tire. so I go to put some air in it today and next thing I know the system shows my passenger front at 51 psi. So my tires are in all the wrong spots according to the system.

Driver front in the system, is actually passenger rear tire
Passenger front is actually driver front tire
passenger rear is actually passenger front tire
Driver rear is actually driver rear, but doesnt show anything

everything I have read says these should auto locate. Or am I missing something? Is there a way to do a hard reset and calibrate these things?
 

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so I recently bought a 2008 limited. noticed while scrolling through the menus that the passenger rear did not show a tire pressure while the other three did, so I figure one of the TPMS is bad and I will fix it when I get new tires. well over the course of the first week the pressure in the drivers front dropped from 42 down to 28... great I got a leak in my tire. so I go to put some air in it today and next thing I know the system shows my passenger front at 51 psi. So my tires are in all the wrong spots according to the system.

Driver front in the system, is actually passenger rear tire
Passenger front is actually driver front tire
passenger rear is actually passenger front tire
Driver rear is actually driver rear, but doesnt show anything

everything I have read says these should auto locate. Or am I missing something? Is there a way to do a hard reset and calibrate these things?
On a wim, I would say try disconnecting your positive battery terminal for a couple of minutes and then reconnect it and see if that initiates an auto locate.

Also, please don't post the same thread in multiple sub-forums.
 

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hey heffercow, did you get this figured out?

I had new tires installed and a new sensor installed. i now have problems with the new sensor i think. I'll try your method to determine which tire it actually is before going back to the installer.

On another note, has anyone tried an Autel TPMS tool to re-write sensor data to the ECU?
https://www.amazon.com/Autel-MaxiTPMS-TS501-Pressure-Diagnostic/dp/B00BHCFNTS/ref=sr_1_5?ie=UTF8&qid=1514922328&sr=8-5&keywords=autel+ts601

have not figured it out. When I added the new tires and wheels the previous owner had pulled the TPMS out... So i have to buy new ones and just havent bit the bullet on any yet. so much stuff out there that some people say worked and some people say didnt.
 

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Just buy a replacement set of Ebay. There are a few sellers seling take off sensors cheap. I bought a set and am having them instaĺled tomorrow.
 

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hey heffercow, did you get this figured out?

I had new tires installed and a new sensor installed. i now have problems with the new sensor i think. I'll try your method to determine which tire it actually is before going back to the installer.

On another note, has anyone tried an Autel TPMS tool to re-write sensor data to the ECU?
https://www.amazon.com/Autel-MaxiTPMS-TS501-Pressure-Diagnostic/dp/B00BHCFNTS/ref=sr_1_5?ie=UTF8&qid=1514922328&sr=8-5&keywords=autel+ts601
Apparently they do not work on factory sensors.
 

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Well I had the replacement sensors installed and they read the correct pressure bur continually flash low. I assume they must have done something wrong when reprogramming.
 

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No, the sensors are reading the correct pressure. I set the tires all to 45 psi and the sensors are showing them at 45 psi. The display is telling me that each tire has low pressure as in left front tire low pressure etc. I spoke to the shop and he said they would have set it to the door sticker, which is 35 psi. He thinks that the computer is in a glitch because the actual pressure is too high.
 

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meaning the tool will not read factory sensor values/config or will not write values to the ECU?
An autel dealer told me they cannot read/write factory sensors to the ecm, only their own. Chysler and the shop that did my swap use a Star scanner to write to the ecm. They are about $1700 US from what I saw.
 

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Interesting stuff guys.

My spare has continuly read as low pressure since i got the Jeep 12 months ago. My first thought was to put the spare on and drive around a bit so that the sensors could read each other and correct the reading. when i dropped the spare wheel down though it was a different size (the original Jeep wheel with Wrangler tyre) as against the startech alloys fited by a previous owner, and not being happy about driving around for any distance with a vehicle at a very strange angle i gave up on that idea.

someone suggested that with starscan the TPMS in the spare could be taken out of the system, by entering either '0' 8 times (as the code for the TPMS module in the system) or '*' 8 times. the Jeep was in for service yesterday (not at a Jeep dealer) and i pursuaded the guy to use his scanner to give this a try. We managed to recode the spare wheel to eight zeros but couldnt change the settings - so its still reading 'low pressure' although an old fashioned tyre pressure gauge reading (from the valve) is 35psi.

is this something that can only be done with a specialist reader such as a Jeep specific one or should it be possible whilst getting pretty deep access into the menus and sub menus?

I think the reader (computer) used should be able to do it (see my other posts in the introduce yourself thread about the VIN on my Jeep coming up as a GC ) this reader auto checked the VIN from the Jeep and identified it as a commander.
 

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So, after I downloaded & applied the latest software update to my Superchips Flashpaq F5 3874 using the "Ignition" program about 2 months ago, I finally have a "Tire Pressure" selection in my Quick Options Sub-Menu:

This is where you change the tire pressure setting that will set off the TPM sensors - that's the good news; The bad news is that the lowest you can take the Tire Pressure setting down to is 22 PSI; it's set at 28 PSI by default from the factory.

If it allowed you to take the tire pressure setting all the way down to 0 PSI, you could have essentially disabled the TPM Sensors which would have been great;

However since the lowest you can take the tire pressure down to is 22 PSI, it's not really very helpful in my opinion.

 

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So, after I downloaded & applied the latest software update to my Superchips Flashpaq F5 3874 using the "Ignition" program about 2 months ago, I finally have a "Tire Pressure" selection in my Quick Options Sub-Menu:

This is where you change the tire pressure setting that will set off the TPM sensors - that's the good news; The bad news is that the lowest you can take the Tire Pressure setting down to is 22 PSI; it's set at 28 PSI by default from the factory.

If it allowed you to take the tire pressure setting all the way down to 0 PSI, you could have essentially disabled the TPM Sensors which would have been great;

However since the lowest you can take the tire pressure down to is 22 PSI, it's not really very helpful in my opinion.
thanks for the reply.

If i get any success with it i'll share it on here, someone on a uk based forum says he has deleted the spare wheel TPMS on his Grand cherokee (GC). i'll get back to him and see how he did it.
 

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Im still getting some more information, but someone has suggested this - but it needs access to the Jeeps software.

https://appcar-diagfca.com/en/

the suggestion was to code out the entire system (which Im not too sure is a good idea)
So, I read up on it; Appcar DiagFCA is a professional Windows PC diagnostics software program, specifically made for Chrysler, Dodge & Jeep Vehicles. The purchase includes free lifetime updates for the software. I pulled up Jeep Commanders and it says you can turn on/off the TPM Sensors with it - and gives you a lot of other nifty options that you can't do with Superchips Flashpaq F5 3874.

I guess I'm the Guinea Pig, I ordered it. Sounds like a good tool to have to me - and it's only $50.00 so, not much to lose. When/if you order it, it asks you for your VIN number, so apparently the software will be coded and only usable on your specific vehicle, I assume so you can not pass it on to someone else, or try to resell it down the road.

Unfortunately, it will be about 2 1/2 months before I get back home to give it a try - I like what I read about it though. I really don't believe this will be much different then using a Superchips programmer to change settings in the ECU, the only real difference being you are using a Windows laptop computer as the programmer, so to speak - instead of a handheld flashpaq tuner/programmer. This sounds like a legitimate solution to the age old TPM sensors riddle, that a lot of us have been looking for an answer to.

Thanks for posting the link @CP07; nice work.
 

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So, I read up on it; Appcar DiagFCA is a professional Windows PC diagnostics software program, specifically made for Chrysler, Dodge & Jeep Vehicles. The purchase includes free lifetime updates for the software. I pulled up Jeep Commanders and it says you can turn on/off the TPM Sensors with it - and gives you a lot of other nifty options that you can't do with Superchips Flashpaq F5 3874.

I guess I'm the Guinea Pig, I ordered it. Sounds like a good tool to have to me - and it's only $50.00 so, not much to lose. When/if you order it, it asks you for your VIN number, so apparently the software will be coded and only usable on your specific vehicle, I assume so you can not pass it on to someone else, or try to resell it down the road.

Unfortunately, it will be about 2 1/2 months before I get back home to give it a try - I like what I read about it though. I really don't believe this will be much different then using a Superchips programmer to change settings in the ECU, the only real difference being you are using a Windows laptop computer as the programmer, so to speak - instead of a handheld flashpaq tuner/programmer. This sounds like a legitimate solution to the age old TPM sensors riddle, that a lot of us have been looking for an answer to.

Thanks for posting the link @CP07; nice work.
So, I received my software download from the seller via e-mail; in the e-mail was this little tidbit:

For connecting to a vehicle we recommend the use of original ELM327 USB, OBDLink LX/SX or Vgate iCar2 bluetooth interfaces. In most cases of 'Chinese' ELM327 clones, the application also correctly connects to the vehicle, but there are devices refusing to cooperate. For 2014+ Jeep Grand Cherokee and 2013+ Ram Trucks we recomend the OBDLink MX bluetooth interface.
That's when the lightbulb came on and I realized that I needed the proper cable ELM327 USB, OBD II cable so that the software on my laptop can talk to the Commanders ECU/computer - this is where things get a little tricky, there are a lot of Chinese clones/knock-offs of this particular cable, these are the cheaper ones that usually range from around $11 - $14.00 and they will give you problems, from some of the nightmare reviews that I've read about them on Amazon and Google; After some reading & searching, I picked this one which will cost me about $48.00 with shipping - I think it was $39.00 before shipping, I just chose to ship it 1st class mail, so I would have tracking on it.

Here is a link to the ELM327 USB Cable that I ordered from Total Car Diagnostics ;

ELM327 USB V2.1 OBDII OBD2 Car Diagnostic Code Reader Scanner Tool

Along with how to install instructions:

How to Install ELM327 USB Cable on Windows and OBD2 Software | Car OBD Diagnostics, ECU Chip Tuning & Auto Repair Support

So now I'm about $90.00 into this, but, I'm pretty sure this is the last piece of the puzzle. Anyway just wanted you all to be aware of what exactly is involved as I'm learning about this on the fly, so to speak. Still not happy that I have to wait 2 1/2 months to actually dive into this, but hey, I learned a couple of things today.
 

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The info came to me from a guy on a forum over here. ill pass the thanks on to him. if you get any news or snags with it let me know and i'll pass them on.

Commanders are fairly rare over here compared to the GC, but are basically the same vehicle (in most respects),
 

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The info came to me from a guy on a forum over here. ill pass the thanks on to him. if you get any news or snags with it let me know and i'll pass them on.

Commanders are fairly rare over here compared to the GC, but are basically the same vehicle (in most respects),
Right now, you know as much as I do;

As I stated above, in addition to this software you also need the proper ELM327 USB, OBD II cable for your laptop, so you're able to connect to your Commanders ECU/computer through the diagnostics port and change/modify any settings. Or you can try the Bluetooth route which I'll stay away from because I prefer the larger display of a Laptop computer to the tiny display of a smart phone.

I've downloaded the software and it looks legit, however, I can't really go any further until I get home in early November - but I'll keep you posted when the time comes.
 

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no worries, like wise if i get any progress i'll pass it on.

(p.s. not a thread hijack..... but what colour is your Jeep classed as? it looks the same colour as mine, but mine is registered as 'silver' I know Jeep once did a strange colour which they called silver, but i'd say mine is some strange greenish colour)

Edited to add update.
Further information is that it only allows you to delete the full TPMS system, not invidual wheels such as the spare.
 
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