One question we have is whether we will need to do anything to make sure that the tire pressure monitoring system (TPMS) will automatically work without having to keep the valve stems with the original vehicle?
From digging around on forums about other Jeeps, it looks like the actual sensors are located near the wheel at each corner of the Jeep and they will automatically start working since they are designed for the same make/model. Can anyone confirm this is actually the case?
I wouldn't see why not... its just a system the monitors the air pressure and reports it back to the vehicle.
The only difference, perhaps, may be the "correct" inflation pressure in the vehicle's EVIC, i.e., the 18" Michelin's require X-psi and the 20" Fortera's require Y-psi. That may even be the same number - not sure as I have never looked. If they are different, I am sure the dealership could "re-program" the EVIC easily - of course at a cost
A lot of other members have purchased 2nd rims from Mopar so they may be better equipped to answer.
You won't have any issues. All TPMS senders are the same across the model lineup (and Chrysler for that matter). The sender is detected by a proximity sensor and it's data reported back to the computer for display. It also doesn't care whether 33 or 36 lbs are your target, it only reports an error when you get below a fixed value, probably 30 lbs or lower. The recommended pressure is not stored or tracked by the EVIC, it only reports the actual pressure and alarms when it gets below a fixed value that is wheel/tire independent.
I suppose if i wanted to buy the stock 18" wheels for my WK2 Overland from someone who DOES have TPMS on their WK2 Laredo, it would not work as intended. Correct me if i'm wrong here guys but my understanding was that there were two different kinds of TPMS systems on the Jeeps depeniding on trims or options.
My TPMS shows me the current PSI for each individual tire. If I took the wheels from a Laredo, it would no longer show me individual PSI... i would still get that warning light if the psi dropped below the preset level.
I've asked this before and received a 99% sure response that the same TPMS sensor is used in all WK2 trim lines. The higher trim has different receiver modules to provide the advanced features.
The parts book shows only one TPMS for all lines, which is same same (more expensive) TPMS used on several other Chrysler vehicles. All the WK2 TPMS send pressure readings, the controller uses the data to set the warning and optionally display the reading on the EVIC. The programmed warning thresholds are the same regardless of wheel or tire size, so reprogramming is not necessary.
"... the controller uses the data to set the warning and optionally display the reading on the EVIC."
That's good to know and makes sense. Thanks! Now has anyone here experienced actual results and can confirm? I'll post up if i end up buying the wheels off of a Laredo.
Didn't mean to thread jack, just good related info.
Before I purchased my 2011 Overland I had a 2010 Limited that I installed 20" aftermarket KMC wheels. We put the new TPMS sensors in the new wheels and after about 10 miles they were working just fine.When winter came on I put the OEM wheels back on and they registered right away.You should have no problem as long as you use jeep TPMS sensors.
I'm guessing that the 18" wheels/tires have a lower air pressure than the 20" ones. How does that work out with the EVIC? Are the sensors specific for each size?
read through the posts here, the EVIC only displays a warning based on a programmed pressure that is not tied to suggested pressure. The EVIC doesn't know or care what size tires you have or what the recommended pressure is.
I have the same 18" snow tires on Sahara rims with generic sensors that worked fine on MY2012 Overland, that now have warning on MY2016 after installing. The system display `_` Is this warning going to keep coming on every time, and is there any damage going to happen if ignored. I thought there would be a way to cancel out system and not require sensors in winter rims.
I just put snow tires that I used to run on my 2012 Overland on my 2018 High Altitude. The 2018 is not recognizing the sensors. Could it be 4 dead batteries or did Jeep change the frequency they broadcast on?
I have a 2014 overland with 18" tires and rims from new. Tyre censors worked.
Bought new second hand tires and rims from a Jeep Cherokee limited. Exactly same as my old tires and rims. The owner swooped out at new and sold them to me.
TPMS didn't work. I waited for a while hoping they would calibrate, didn't happen.
Maybe i did something wrong?
Do GC limited have/diferant sensors?
I have a 2014 overland with 18" tires and rims from new. Tyre censors worked.
Bought new second hand tires and rims from a Jeep Cherokee limited. Exactly same as my old tires and rims. The owner swooped out at new and sold them to me.
TPMS didn't work. I waited for a while hoping they would calibrate, didn't happen.
Maybe i did something wrong?
Do GC limited have/diferant sensors?
The Jeep Cherokee uses different TPMS than the Grand Cherokee's. Also the did change the TPMS sensors on the JGC in 2016 (the Freq is the same but it wont pick up the old ones on the new system and vise versa). Also you can't relearn the sensors to make them work with the new vehicle you must have the correct sensor. Please see link...scroll down to Table in section 4...Hope this helps.
I spoke to the dealer and he figures they changed the frequency in the system in 2016. The sensors that were once good on previous GC are crap now. He also mentioned after several resets at start up, the TPMS may go into winter mode. Can't wait if that is the case.
I just checked RockAuto and looked up TPMS sensors for a 2018 and 2012 Grand Cherokee, they have different part numbers. So it may be there are not the same sensors over the entire M/Y run of the WK2.
The sensor has to work on the same frequency and be programmed with the correct protocol to communicate over that frequency. The TPMS system in the vehicle has to identify and register the identifier for the sensor on each wheel. It goes through a process of elimination to make sure its a sensor on the vehicle and what position it is at on the vehicle. That is why you may have to drive several miles before the sensors start to report pressures.
If you swap wheels with another vehicle, the TPMS would have to go through the process again.
If you're worried about min pressure with different tires, check the tire placard on each vehicle on the Door Jamb. I usually run my tires a few PSI higher, the max pressure will be printed on the side of the tire.
Had new winter tires put on recently by dealer who matched a local price. He added $360 as he misunderstood that I needed new sensors, but I was suppling them, which I bought from a Mopar site in USA for $90. I guess they thought they were going to make back some money on the tire discount. After 2 winters of toggling through the warnings waiting for tires to wear out, all is finally good again with updated TPMS. Wife just bought new civic and thankfully there are no TPMS on it being a Canadian car. One less expense for winter tires. Not hard to check air in tires when a cold snap hits.
Rock Auto shows only the Mopar OEM Part for the later TPMS. That might only mean Rock Auto doesn't carry an aftermarket alternative.
Regardless, you could go to Rock Auto and look up the part number for the TPMS you need, then do a Search on eBay for that part number. I've seen OEM TPMS offered as sets of 4 for significant savings also. But if the only thing that works with your M/Y is OEM sensors, while you could save money on eBay, its likely not going to be bargain basement prices like some of the aftermarket TPMS sets.
Good reference; similar to abundance of printer ink cartridges. Many models for same vehicle to do the same thing. Could be standardized for simplicity.
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