Hello all. I installed a take off set of wheels last week (18 inch Sport wheels) and mounted a set of Falken Wildpeak Tires on them. These are exactly the same wheels I was using before, have 2 identical sets. Bought new TPMS sensors for these wheels and when I took the factory wheels off and installed the new set the TPMS picked them up and read within a short distance. Fast forward to yesterday afternoon, I was driving home on the interstate(about 300 miles total on new wheel and tire set) and all of a sudden I get a TPMS fault error. I look at the graphic and the right front pressure reading shows -- for the reading. I continue on home (about 75 miles) and by the time I pull in the driveway the TPMS error is gone and the tire pressure reads in the graphic again. Anybody ever seen anything like this? I bought the sensors from a reputable company and they have no problems reading except for this one hiccup. I've got 40k+ miles now so out of warranty, I can engage ESP warranty if I have to but would like to avoid $100 deductible if its something simple...

 

I would wait to see if it happens again. On a 300 mile drive, they had plenty of time to connect. If it happens again, then you need to verify which sensor is the issue.

 

When I got new rims and tires for my truck I bought 4 brand new oem TPMS sensors and one was a dud right out of the box. Maybe the battery is failing on one of yours? Mine was dead from the get go and never showed psi.

 

Well it did it again this morning. Got the fault then a few miles later the fault went away and it started reading again. Weird that its intermittent. I just got a new laptop, need to get Forscan loaded and see what the codes say and go from there..

 

Just did a scan and it says "general Signal Failure". When the light came on it showed right front on the display. Worst case I will swap one from my old set of wheels and hope for the best. The sensors I mounted I had in a drawer for several months before installing, battery failure I guess is a possibility.

 

Sensors go into a sleep mode when no movement is detected for 30 min to save battery life. Battery life is specified as 10 years. Sitting on the shelf for awhile should therefore not have an impact on battery life.

The sensors are susceptible to RFI interference with the following being listed causes:

1. Video equipment has been found to cause RFI especially when the video and power supply lines are near the TPMS.
2. Anti-theft alarms (even those installed by the dealership) have been found to create enough RFI to cause the TPMS to malfunction or lose considerable range. These anti-theft alarms can be difficult to locate, as they are usually hidden somewhere out of the way for reduced accessibility.
3. Many in-vehicle cell phone chargers have been found to cause considerable RFI. The vehicles with the power point closest to the RTM are the most affected. It must be noted that most cell phone chargers do not produce high levels of RFI all the time. This depends on the state of charge of the cell phone battery. The phone battery must be almost completely discharged in some cases.
4. Power supplies and DC/AC inverters typically create a lot of RFI. Most consumer grade equipment has very little filtering or shielding.

 

I recently had similar issues. After a couple of months I never had a problem again. I guess just try and wait it out.

 

Has it been at or near freezing? Could be a bit of moisture causing it. More than likely it's just a sensor on the cusp of failing.

 

It has been in the morning close to freezing but every time the light comes on I am driving 60-70 mph and it is in the high 50 to low 60's both days. It has happened twice more today alone, getting more frequent. Thats a sign of a flaky sensor to me. Went by my dealer and just asked and they told me that the aftermarket tpms sensors they have seen a fairly high failure rate. I did the learn procedure after the second warning light and it started reading again. They all 4 trained successfully (the procedure in the manual, let out air etc.) I went online and ordered some genuine Motorcraft sensors a few minutes ago, they were about twice the price but if they work better its worth it. Stay tuned, the eta is a week, hopefully I can get them swapped out and drive a few days and see what happens.

 

I bought a set from Amazon of real Motorcraft ones. When the dealer installed them and tried to train them, he said they weren't working. oh well.


5 miles down the road the light went out and all 4 showed proper pressures.

Wow, just did the order lookup, I paid $75 for a set of 4.


They are $40 now, so $10 each. I should probably order a spare set for that price.