Tool Cat UW50 Dead as a Door Nail!

[Tool Cat Guy]

Howdy all. I've got a 2023 UW50 with low hours (500?).

The other day I went to start it and it started rough, but it was cold (20*F). This isn't unusual in and if itself. So I hit the Stop button, then hit start again to cycle the plugs and there was simply no power. No lights, no screen, no beep, etc.
I've checked all the fuses in the cab to no avail. I'm not sure how to check the relays but I don't hear any clicking. Took a meter to the battery and it's holding 12.7 which should certainly be ample power to at least try to start.

Any thoughts on what else to check? Any experience on how to test the 30amp square relays?

Thanks in advance.

 

[5030]

12.7 is basically DOA....

 

[Tool Cat Guy]

12.7 is basically DOA....

I appreciate the reply but I have to imagine I'd still see a light or a beep, etc. Not only that but I tried jumping the battery with my truck and got absolutely no response. Thoughts?

 

[etpm]

Howdy all. I've got a 2023 UW50 with low hours (500?).

The other day I went to start it and it started rough, but it was cold (20*F). This isn't unusual in and if itself. So I hit the Stop button, then hit start again to cycle the plugs and there was simply no power. No lights, no screen, no beep, etc.
I've checked all the fuses in the cab to no avail. I'm not sure how to check the relays but I don't hear any clicking. Took a meter to the battery and it's holding 12.7 which should certainly be ample power to at least try to start.

Any thoughts on what else to check? Any experience on how to test the 30amp square relays?

Thanks in advance.

Sounds like a bad connection from the battery, probably the ground cable. Check the connection by removing the cable from the frame and examining the area under the connection. I wouldn't be surprised at all if there is rust there. I have been there and done that. If my suggestion doesn't pan out start checking the other connections from the battery. But I bet it's the ground cable.
Eric

 

[Tool Cat Guy]

Sounds like a bad connection from the battery, probably the ground cable. Check the connection by removing the cable from the frame and examining the area under the connection. I wouldn't be surprised at all if there is rust there. I have been there and done that. If my suggestion doesn't pan out start checking the other connections from the battery. But I bet it's the ground cable.
Eric

I'll definitely have a look, though I can't raise the bed with no power. I've only had it for a year so I sure hope that's not the case!

 

[dodge man]

12.7 volts isn’t bad for a battery but you need to load test it. I agree, even if it’s bad it shoukd light something up.

 

[ruffdog]

First thing to check would be the 100a mega fuse. Then check battery connections.

 

[ruffdog]

More reading:

How to replace dead battery 5600d

 

[Tool Cat Guy]

First thing to check would be the 100a mega fuse. Then check battery connections.

I've heard of this mythical mega fuse but I've been unable to find it. Where about is it located? I did check the fuseable links by the battery but they're all intact.

 

[TMGT]

I appreciate the reply but I have to imagine I'd still see a light or a beep, etc. Not only that but I tried jumping the battery with my truck and got absolutely no response. Thoughts?

If it's a standard flooded lead acid battery, 12.64 is considered fully charged, some agm and other types of batteries can be higher, but anything over 12.64 you should be good for a flooded batt.

Not sure where some people pull their info from.

 

[TMGT]

Check cables and make sure they have a good connection, is there a main relay or breaker? Possibly a usable link?

 

[Hay Dude]

Before you start replacing expensive parts, try "free" easy solutions.
Tap the starter solenoid lightly with a hammer or decent size wrench.
Could be a sticky starter solenoid.
Happens when it gets real cold.

Then start looking at battery cables connections.

 

[Hay Dude]

More reading:

How to replace dead battery 5600d

Why would anyone replace a battery with 12.7?

A few years ago I thought I had dead batteries and here I bumped a switch with a heavy draw the previous day that was wired directly to the batteries. It was "on" while I was trying to crank the starter. Not enough power to start the engine.

Try the simple things first.

 

[ruffdog]

Why would anyone replace a battery with 12.7?

What?????

The thread I linked to explains how to get to the battery if you can't lift the cargo box on a Toolcat.

 

[LittleBill21]

12.7 is basically DOA....

12.7 is considered a fully charged battery, where do you come up with this stuff

 

[ruffdog]

I've heard of this mythical mega fuse but I've been unable to find it. Where about is it located? I did check the fuseable links by the battery but they're all intact.

On my G series, the 100a fuse is up by the battery where power for everything but starter branches off red lead. It is near where the sight glass is for the hydraulic fluid tank.

 

[Tool Cat Guy]

On my G series, the 100a fuse is up by the battery where power for everything but starter branches off red lead. It is near where the sight glass is for the hydraulic fluid tank.

Thanks Ruffdog. I'll go searching.

 

[Tool Cat Guy]

Why would anyone replace a battery with 12.7?

A few years ago I thought I had dead batteries and here I bumped a switch with a heavy draw the previous day that was wired directly to the batteries. It was "on" while I was trying to crank the starter. Not enough power to start the engine.

Try the simple things first.

Yup. I agree and have been creeping around that thing with a multimeter. I'll report back this evening.

 

[dodge man]

With John Deere’s they had a run of tractors that the batteries suddenly died. Apparently an internal short would take them out. That’s why I said load test the battery to 100% eliminate the battery.

 

[Tool Cat Guy]

And the plot thickens.

Confirmed power across mega links.
Power to starter...check.
Power to both fuse boxes in cab...check.
Checked every fuse with multimeter.
Swapped horn relay w critical relays one at a time and no love.

This thing is a rubix cube.