25 Amp Fuse

[tpc66]

Hi All - new Winnebago 24D owner here with hopefully a simple question. The 12V accessory outlet in the bottom center console is dead - I believe it's the giant 25 Amp fuse located in the drivers side footwell, but for the life of my I can't figure out how to pull that fuse. It looks like it's clamped down, but I can't get it spread enough to pull it and don't want to damage it.

Any thoughts?

Thanks - Tom

[d23haynes57]

It would be surprising that there would be a giant-sized fuse for a power socket. If a plug-in style fuse there are slots on top so a meter probe can be used to test it without pulling it out.

[OMMM4747]

A picture would help if you could squeeze under there to take one. But what you're describing ("giant fuse") is either a current limiter or some other component unlikely related to your issue since 25-amps is a lot for a 12v outlet. All bets are off if there are other failures in which case that component may be part of the failure circuit. A fuse is a fuse and in this rare case, 'size' doesn't matter.

Good luck

[tpc66]

Originally Posted by OMMM4747

A picture would help if you could squeeze under there to take one. But what you're describing ("giant fuse") is either a current limiter or some other component unlikely related to your issue since 25-amps is a lot for a 12v outlet. All bets are off if there are other failures in which case that component may be part of the failure circuit. A fuse is a fuse and in this rare case, 'size' doesn't matter.

Good luck

Picture attached - I was giving it a little tug (following along with your joke above) and the plastic cover came off of the top. I honestly have not seen a fuse like this before - it's almost like there's some kind of material inside it that is replaceable. I also see that I did not replace the cover correctly - bad eyes and a small working area.

[d23haynes57]

That fuse would not be for a power socket. It is a special. Is the power socket powered by the chassis or house battery system? May not even be fed from that fuse block.

[tpc66]

Originally Posted by d23haynes57

That fuse would not be for a power socket. It is a special. Is the power socket powered by the chassis or house battery system? May not even be fed from that fuse block.

Per the owners manual fuse diagram, it says that is the center console 12V outlet fuse. Matches perfectly on the diagram in the manual.

This is why I’m confused- seems like a high amperage for that use and is also a type I’ve never seen before.

[OMMM4747]

WOW, that really is a big fuse!

And it does indeed look like a current limiter (aka, 'slow fuse') which allows for momentary spikes above 25-amps without blowing unless the amperage (and heat) is sustained above the material's melting threshold. That is why it is encased in a shell so as to protect its receptacle and nearby fuses from heat. All that said, unless you have other failures I doubt this is the source of your problem. 25 amps is a lot of overkill for a 12v outlet unless it is or is connected to or is on the cigarette lighter's circuit and then a definite maybe. Another consideration why this is not the source is that the lens/cover is clear (vs foggy) indicating no heat damage.

I cannot offer any advice on how to remove it. Likely pulling it (like other fuses), but I'd call your manufacturer to be certain unless anyone on this forum can offer better advice. I don't want to be the source of breaking anything down there.

One last through: Whatever it is that's not working, have you tried w/the engine running (ignition to RUN, ON, etc.)?

Good luck

[tpc66]

Good information for sure. The symptoms are that the outlet is completely dead. For the manual, it should be powered constantly regardless of the key setting.

[l1v3fr33ord1]

tpc66-

Information I uncovered (link here) indicates fuse 13 in this panel is also associated with the 12V socket- and a more reasonable 15A rating. Third fuse from the top, middle row.

Fuse 25, the one you're trying to remove, is listed as "12 V socket (center console) for tire sealant." Tire sealant?

[Winterbagoal]

Originally Posted by d23haynes57

That fuse would not be for a power socket. It is a special. Is the power socket powered by the chassis or house battery system? May not even be fed from that fuse block.

If the cockpit wiring in the 2019 24D and 2018 24V are the same, and we're talking the outlet underneath the dash pullout cup holder tray, it's wired to the chassis battery. I use it and a charger/maintainer to maintain my chassis battery during periods of inactivity. Like this winter, so far.
Also, I had to look up the OP's stats to find out which year of "24D" he has, as it can make a difference, when trying to diagnose stuff on the internet.

[tpc66]

Mine is a 2019 - I did just check fuse 13 and it’s fine (and I thought it would be because the cigarette lighter is working).

[tpc66]

I have tried every combination of Key On/key off, etc.. Nothing seems to change it. I’ve also tried several different devices in there to make sure it wasn’t the device itself.

Originally Posted by OMMM4747

WOW, that really is a big fuse!

And it does indeed look like a current limiter (aka, 'slow fuse') which allows for momentary spikes above 25-amps without blowing unless the amperage (and heat) is sustained above the material's melting threshold. That is why it is encased in a shell so as to protect its receptacle and nearby fuses from heat. All that said, unless you have other failures I doubt this is the source of your problem. 25 amps is a lot of overkill for a 12v outlet unless it is or is connected to or is on the cigarette lighter's circuit and then a definite maybe. Another consideration why this is not the source is that the lens/cover is clear (vs foggy) indicating no heat damage.

I cannot offer any advice on how to remove it. Likely pulling it (like other fuses), but I'd call your manufacturer to be certain unless anyone on this forum can offer better advice. I don't want to be the source of breaking anything down there.

One last through: Whatever it is that's not working, have you tried w/the engine running (ignition to RUN, ON, etc.)?

Good luck

[CharlesinGA]

Originally Posted by tpc66

Mine is a 2019 - I did just check fuse 13 and it’s fine (and I thought it would be because the cigarette lighter is working).

Is the CHASSIS a 2019 or is the coach 2019. They may both be, but its extremely common for the chassis to be one year behind the coach and Winnebago assigns the model year to the completed vehicle, without regard to what year model the chassis has been designated by Mercedes. Its the upfitters call for what year the complete vehicle is.

(chassis years) a 2018 is a NCV3 model and the 2019 is the first year of the VS30 model. similar but different looking and quite a few changes.

Charles

Pics from Wikipedia https://en.wikipedia.org/wiki/Merced...ljahr_2006.jpg

VS30, 2019 and on. (Mercedes years)


NCV3, 2007 to 2018, (Mercedes years)

[tpc66]

An update - since I was off yesterday for President's Day and this was driving me crazy, I went over to the local Mercedes dealership. It was an interesting experience, as even the 2 guys in the parts department were somewhat stumped by this whole fuse situation. In the end, they did find the part number (my chassis as mentioned above is a 2018, Winnebago 24D is a 2019). I've attached a picture of the fuse - they had to ask one of the techs and he told me even though there's a cover on it, it is a standard spade type and you just pull it out. I felt like an idiot, but then again I've never owned one of these before so I guess we'll call it a learning experience.

The end result is that my fuse is fine - checked it with a meter and it's not blown. So - my problem with the 12V outlet is somewhere else - I'll now start digging into that to see what I can find!