I installed Subaru SSM4 the other day (Toyota's equivalent of Techstream, their dealer tool) to see what was different between the dealer tools. Although there isn't much difference of the capabilities, ie. sensor monitoring, customization, key reprogramming - but I noticed a few differences between them that I didn't see in Techstream previously.
1. Techstream has explanations on customizations and utility tests whereas SSM4 has none.
2. SSM4 has a few additional customizations on the body control which isn't present in Techstream (see image below).
3. SSM4 selects by model year, or mini revisions from A to H. You should be able to see your revision on the sticker near the passenger door hinge.
4. You are able to view the calibration IDs/numbers of mostly each components (window control, ABS, combination meter, etc). IIRC in Techstream you were only able to view calibration IDs of the ECU and ABS/VDC.
5. Both tools are unable to reprogram calibrations, SSM4 spits out a generic error.
On the additional settings I have tried so far:
1. Destination setting: not sure what it does, but it cannot be changed (generic error)
2. MT/AT setting: no difference.
3. SUBARU/Toyota setting: the backlight on the LCD screen of the electronic aircon control turns off when the AC is off (AC OFF button pressed) for Subaru. For Toyota it remains on. Other than that - no other difference which I can tell.
4. Remote control starter setting: generic error, cannot be changed.
Tested on a Japanese 2015 MT GT86.
