I tow my 2016 Tacoma 4x4 auto with push button start. I have the drive line disconnect, RVi2 brakes and Blue Ox base plates. I bought the SMI brake kit, but couldn't find enough vacant real estate under the hood to feel comfortable installing it.
It took some research but it is doable on the push button start by disconnecting the battery after the proper sequence is followed. A charge line from the coach is also recommended. I got most of my info here:
Feel free to PM me if anymore detail is needed.