I`ve got M7-171 model with (non-Kubota) precision farming system (Antenna, ECU-S1, RTK Modem, Display, etc...) connected to Kubota OEM AutoSteer system.
Biggest problem I have is that when using AutoSteer it quite often disengages without apparent reason like every 20-30 seconds :-(
What I`ve concluded is that AutoSteer "thinks" that steering wheel was manually turned (when it was not) so it goes off.
When going into AutoSteer mode, steering wheel should become "locked" and only quite big torque should "unlock" it (thus by disabling AutoSteer).
It indeed becomes locked somewhat, but it`s really easy to turn (even using small finger).
All hydraulic/oil filters were changed to new ones - no effect.
Luckily there is still warranty. Local Kubota dealer maybe will find a solution, but it will probably take them months to do it. I do not have so much time.
Tractor is quite new - 400 mth.
Steering cylinder failing?
Bad AutoSteer calibration?
Steering valve (Danfoss OSPED 160) failing?