Saturday I was grading my driveway with my 2016 MX5800 and was running the tractor for about 2 hours with absolutely no problems. The tractor had been sitting in the pole barn for a month but it started right up, no problems. As I was grading the driveway, I turned the tractor off to grab a drink and a shovel. 10 minutes later I go to re-start the tractor and when I did all of the dash lights were blinking really fast and the gauges were fluttering and the engine would turn over very slow. Since the tractor is a 2016 model I figured the battery had went bad so I checked it and it was only showing 12.2 V after running for 2 hours. Also, I keep it hooked it hooked up to a battery tender in the barn so it should have been more like 12.65 V. I went to Advance and had them check the battery and it tested bad so I bought a new one and put in the tractor.
Now, here is the problem. The tractor turns over and cranks just like normal, there is the clicking of the fuel solenoid or whatever it is, glow plug light comes on and goes off, and the gauges don't flutter or anything but the tractor does not start. It is showing a P0605 code which from Googling and talking to the dealer is a ECU communication problem. I have tried everything from leaving the battery unhooked for a long time and using the code clear procedure that I found online where you hold down the 2 DPF buttons and go through the process and it still won't clear the code. So now my brain is naturally thinking worst case scenario and the bad battery fried the ECU and now I'm going to have to spend several thousand dollars!
Does anyone have any more advice that they can offer me? I have checked all fuses with a multimeter and done a visual inspection of the wires and everything looks good. I called the dealers around me and all of them are between 1-4 weeks out with service and they also say no diagnostic work can be done on-site and the tractor needs to come in. Let's look at best case scenario, does anyone know if there are codes that only the dealer can clear with their software and without clearing the tractor won't start? That would at least be better than buying a new ECU. Also, on that note does KTAC cover this? Their website says mechanical breakdowns are not included so I am guessing not? This tractor has been flawless for the 6 years I have owned it since new but now I am pretty frustrated; especially if I need to spend big bucks to fix it. Thanks in advance.
Now, here is the problem. The tractor turns over and cranks just like normal, there is the clicking of the fuel solenoid or whatever it is, glow plug light comes on and goes off, and the gauges don't flutter or anything but the tractor does not start. It is showing a P0605 code which from Googling and talking to the dealer is a ECU communication problem. I have tried everything from leaving the battery unhooked for a long time and using the code clear procedure that I found online where you hold down the 2 DPF buttons and go through the process and it still won't clear the code. So now my brain is naturally thinking worst case scenario and the bad battery fried the ECU and now I'm going to have to spend several thousand dollars!
Does anyone have any more advice that they can offer me? I have checked all fuses with a multimeter and done a visual inspection of the wires and everything looks good. I called the dealers around me and all of them are between 1-4 weeks out with service and they also say no diagnostic work can be done on-site and the tractor needs to come in. Let's look at best case scenario, does anyone know if there are codes that only the dealer can clear with their software and without clearing the tractor won't start? That would at least be better than buying a new ECU. Also, on that note does KTAC cover this? Their website says mechanical breakdowns are not included so I am guessing not? This tractor has been flawless for the 6 years I have owned it since new but now I am pretty frustrated; especially if I need to spend big bucks to fix it. Thanks in advance.