2017 MKZ Reserve 2.0 3G to 4G TCU

[F150Chief]

It will work but it might take a try or two…

3G to 4G TCU upgrade 2016 MKZ 2.0 w sync 3.4

Needing help with the TCU upgrade on my 2016 MKZ 2.0. Bought a used 4g TCU (JL3T - 14G087 - CK) alongside the cheap antenna from amazon and installed it. Went to forscan and let it create a new profile and it picked up the new TCU. I performed a hard reset of the TCU followed by sync 3.4 reset. I then performed the steps in Ford’s service document to reset the car connection with my phone (valet mode on/off while cycling ignition on/off). I reinstalled lincoln way and added my vehicle back. The …