Question for those of you 2021 owners that have upgraded wheels. My buddy has a 21 Lariat and has purchased a set of wheels (from a private owner) WITHOUT TPMS sensors installed. He purchased 4 sensors (315mhz) brand new from Ford and cannot get the truck to recognize them.
he’s tried multiple sensors so we know it’s not faulty sensors, Discount Tire and the Ford dealership both cannot get them the work.
did Ford go to a different sensor for 21?
Other that swapping out the sensors from the OEM wheels, what have you all done to get your sensors to work?
thanks

 

I have heard you do nothing....The trk will relearn itself....But it also has to be driven to wake up the sensors (plus 20 miles I think)
My 16 I just switched rims with the new sensors & everything reads fine ?? I have a relearn tool for my 2013 (09 to 14)

 

Correct. Drive. If they don't work, they are wrong sensors.

 

How does it know position?
looking at the drivers information screen it shows pressures for each tire.

 

Didn't have any issues when I got new wheels... Discount Tire used my original Ford sensors and they connected immediately.

 

You can ask Custom Offsets about the correct frequency. They installed sensors when I ordered my wheels and they switched over fine.

Everyone here is correct, just drive. I drove for about 5 minutes over 20mph and nothing happened. I drove home from my buddies house and 15 minutes later the pressures switched.

 

Four 'antennas'. The signal is very short distance, picked up from within the wheel well so it can't read the other sensors, or has a low enough s/n ratio so the computer can tell which one it's supposed to pay attention to on that input.

 

i see proximity.
On my 18’ exploder i assume one receiver since you program in a set pattern
lf rf rr lr
thanks

 

Ford uses 2 frequencies 315 and 433MHz. Possible the wrong one was used. Not sure what on the F150 makes one use 315 and another 433 but on others it's a trim/options determination. If unknown short of breaking down one factory wheel to see what's printed on the factory sensor, you could get the parts department to use the vin to find what sensors were used on the build.

 

You assumed correctly. There are multiple ways of doing TPMS:

With my son's 2010 Fusion. single channel monitoring, with no programming requirements. Ease of use, but it can only alert that a tire is low, not where it is located. Not helpful if you've got a slow leak, are in the middle of nowhere, and want to put on the spare in case it bleeds out entirely. Oddly specific scenario because it happened to him.

On your Explorer, single channel, matched each TPMS sensor ID with a corner of the vehicle. You get positional info, but programming in order is required, and rotating tires requires either re-programming or going into a menu setting to denote the changes in wheel position. No ease of use, but provides more information to the driver.

On my 2015, four channels. TPMS are correctly identified in their position at all times with no intervention required. Ease of use and max information, but costs more.