It is clear that you an only READ with the TS401 and NOT program.
That is the job of the TMPS Pad with Software or MS906TS.

About the read option the support has to give details as I do not have mx sensors at hand.
(Asssuming it can read them before they get programmed, and may be some extra data once they are customized for the car)

 

 Not 100% sure but I thinks all blank programmable sensor are MX sensors

But you can only program sensors branded to the tool ie:ts501 with autel sensor-wurth sensor with wurth tool

snap-on does not sell sensors but can program a few name brand , ie: scherader- uni-sensor ,ect. but not all ie: autel ,wurth ,but never tried

ITM and WURTH tools look identical in form ,menu , version firmware  everything but can only program their own sensors

the tool actually tells you its not my sensor so it wont program and the only thing holding it back is the brand name

ts401 can only trigger and read

;

 In Canada I am doing 2016 vehicles in prep for winter

some factory sensors witch only need to be triggered for relearn like ford

but sometimes its nice to clone sensor summer to winter tires like Chrysler as example

I have ver 3 and after triggering  all sensors if you hit N button you go to screen that tells all

info for sensors on two rotating screens where as if individual sensor screens seem to be

missing bat and temp

In a different note I just did a 2016 fusion today and mechanical tire guage read 35 psi

but when read with the 401 and the snap-on tpms3 both read 27 psi go figure

after relearn the car never set tpms light on for low tire pressure

I have not seen this MX sensor in the main menu as I looked today quickly

as you said what is its purpose

Ford for some reason for past couple years have made all 315mhz sensors proprietary to the vehicle 

just because the oe ford sensor says 315mhz does not mean the car will see it on relearn

and after market  senors are hit and miss on ford ,other makes not so anal and more forgiving

I think I will move up  to version 3.01 and see and if not just go back to previous version if possible

 Keep in mind that it will only show low tire pressure when 25% below recommended PSI on the vehicle's tire info sticker (33 PSI for a Fusion?) and if it is 33 PSI it won't show as low pressure unless a TPMS is broadcasting below 25 PSI.  BTW I've seen many cases where the sensors read low vs. my tire gauge.  I've heard that Schrader is supplying some Fords (2015 & up F-150 and Mustangs) with a new sensor that has an auto locate feature so that the sensors don't have to be relearned after tire rotation. As with previous Ford sensors they are 315 Mhz but as far as I know are only available from Ford without any aftermarket availability.

 I watched a YouTube video where the guy says you can program mx sensors with the ts401 and even shows on screen how to. Did they take this away or add it after? I'd like to know because it will most likely decide my purchase of an autel or not. Thanks

      I believe programing was added in the 3.12 and later updates. Yes the TS401 added programing ability. Whether it is removed in the future is anyone's guess as Autel has been known to remove features to the dismay of its users, but as of update 3.13 its still there.

The TS401 can read blank MX Sensors using the scan MX Sensor function. This is handy as you can see the hardware/software version, battery info and other stuff off the blank sensor, and just make sure it works. Pretty tough to read/trigger the sensor otherwise if it hasn't been programed to a vehicle.

To program a MX Sensor, use the TS401 like normal:
                Enter vehicle information
                Scan the sensors

   At the screen showing sensor information, highlight the sensor you want to replace.
   Press and hold down the Y button.

A menu will open showing three options:

  Copy by Activation        :This will program the MX Sensor with the sensor ID from the original sensor that we just read and high lighted
 
   Auto Create                   :This will generate a random ID that will work for the vehicle.

  Manual Create                :This will let you put in the ID in by hand.

Just follow the instructions on screen after the method you choose and you will program a blank MX Sensor to work on that vehicle.

Copy by activation is good if the sensor is broke but still triggers, like a broken non-replaceable stem. It allows the TS401 to read the original ID and writes it to the replacement MX Sensor effectively cloning it. The vehicle will never know it was changed no "relearn" needed.

Auto Create just generates a valid ID for the vehicle your working on, so if you have a junk sensor and just need a replacement you can use this to make your blank MX Sensor a functional replacement. After programing, the MX Sensor is just like one you would buy that was made for the car. After installation you would need to "relearn" it to the vehicle the same way you would as if you just got a new sensor from the dealer.

Manual Create lets you enter the ID by hand. This is handy if you can pull out the original broken sensor and visually see the ID on it. You can enter the ID with the arrows on the keypad, and once again the sensor would be a clone and not need "relearning". Also with a proper scan tool can can read the IDs that the computer has learned and then you can use the ID for the sensor you want to replace and again, clone the sensor no "relearn" needed.

Edited to add: After the MX Sensor is programed, it can be read by any other tool out there, it is just another normal sensor at that point.