I am really surprised it doesn't store a code when it stops and red light comes on. Does it do it while moving or only after a direction or gear change? Always forward or sometimes reverse as well? The more detail you can give as to when and how it happens can help. Does it happen on level ground, uphill, downhill, on side of hill? Does it ever happen when first started or only after being driven a while? As a dealer tech with many years experience, I can say the intermittent issues are the worst to diagnose, especially when it doesn't leave a clue behind with a code. When that happens, it is absolute guesswork if nothing is visually obvious. There is a bulletin/solution that talks about the neutral switch on top of the transmission that can cause this issue. Some 5M's had 2 different switches on top. Do you know which one they changed? The AM117780 is the one mentioned in the solution. Many things can cause this issue. Several different switches, sensors, solenoids, transmission controller, and many wires. It may be beneficial for dealer to come to you and plug computer in to monitor everything while you operate it if he cant duplicate problem.
"I am really surprised it doesn't store a code when it stops and red light comes on."
A mobile independent equipment tech was here last week on a overheating Kubota issue so while he was here we had him take a look at it. He actually pulled up two codes on the little display but could not replicate the issue at hand. I believe he said he thinks it's either another bad clutch position sensor or the forward/reverse solenoid. Amazing that he was able to pull those codes yet JD has been telling us all along that it was not throwing codes. Pictures below.
"Does it do it while moving or only after a direction or gear change?"
Typically once it's moving it's fine. Usually only happens when starting from a full stop or a change in direction but has been known to go a few feet and stop.
"Always forward or sometimes reverse as well?"
Both
"The more detail you can give as to when and how it happens can help. Does it happen on level ground, uphill, downhill, on side of hill?"
Uphill, downhill, flat it can happen with all those. It can run fine drilling oats on 12 acres and you get done and try to unhook the drill and boom it's out or it comes straight out of the shed cold and you go to back up to an implement and it just won't move.
"Does it ever happen when first started or only after being driven a while?"
Both cold and hot, can just have been started or having been running for hours.
"As a dealer tech with many years experience, I can say the intermittent issues are the worst to diagnose, especially when it doesn't leave a clue behind with a code. When that happens, it is absolute guesswork if nothing is visually obvious. There is a bulletin/solution that talks about the neutral switch on top of the transmission that can cause this issue. Some 5M's had 2 different switches on top".
"Do you know which one they changed?"
I don't. I'm holding it in my hand but there's no numbers on it at all. Just the brand name Pollak 4. Picture below.
"It may be beneficial for dealer to come to you and plug computer in to monitor everything while you operate it if he cant duplicate problem."
We tried that yesterday. Son tried to back up to the grain drill and it just stopped when he tried to back up. We called and he sat in the tractor for 30 minutes with it in gear while it was red ringed. They said they had no one that could come out and look at it. He finally got it to move and just put it away but since he was going up the road a ways he got the CaseIH Maxxum out and took it up the road with the drill. They are supposed to come out tomorrow morning.
Here's the two codes he pulled up:
