General 30A fuse on lt rear of battery box

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General 30A fuse on lt rear of battery box

Peat

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Having searched without luck, does anyone know what the single 30A fuse is for that is located to the left rear of the battery box, adjacent to the positive terminal?

Doing a strip & clean on the Fuse board + Body Computer connectors I continued on to the under bonnet fuse panel when I noticed that at some time this particular fuse has got extremely hot and caused a partial melt on the surrounding casing. Is it in fact supposed to be rated at 30A?

On a positive note the the Amber warning triangle and the message BRKE.LAMP.FAIL have disappeared from the instrument panel - but for how long?

 
If you're referring to the standard size green 30 Amp blade fuse in it's own holder, and away from the rest of the fuses, I think it's a power supply for the optional auxiliary heater, only available on the diesels.

If that's the case, it shouldn't be getting hot whether you have the auxilliary heater or not.
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Good man Davren, that's the one.

I don't suppose you know, well of course you do:) where this optional auxiliary heater is, it's function and operation?
 
I think it goes under the floor roughly below the left front seat. I've never seen one in the UK. It was mainly for the colder climates of northern Europe/Scandinavia.

It's a small diesel engine with it's own fuel supply pipe from the main fuel tank and has it's own small exhaust pipe and silencer. Coolant pipes from it are connected into the car's cooling system and heater. There should be a remote control for it, the idea being that you could start the auxilliary heater from inside the house and when you went to the car 15 minutes later, it would already be warm.

I'm not absolutely sure that's what the fuse is for, it's just that while browsing some of the wiring diagrams a while ago, the only fuse anywhere on them that wasn't in one of the fuse boxes, was a 30 Amp one for the auxilliary heater. My JTD has the fuse, but doesn't have the heater. I've never got round to tracing the output side of the fuse to see where tthe wire goes.
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My thanks to you for the information Sir.

I can confidently say that I do not have a small diesel engine nestling anywhere within the car but it is intriguing to know just where that wiring goes.

I think I will remove the fuse and see if anything stops functioning. I guess it must terminate somewhere for it to have consumed such current to heat the fuse holder to the point of melting, although I have a feeling that the fuse was not seated correctly!

Could it be an in-line fuse for the rear power socket or is that fused elsewhere?

You certain didn't disappoint Davren . Thanks again.
 
Could it be an in-line fuse for the rear power socket or is that fused elsewhere?

According to the handbook, the rear power socket uses the same fuse as the cigar lighter.

I think the only way to discover what, if anything, it's for is going to be to trace the wire from it. I'm abroard on holiday for another month, so doubt I'll have time for that. ;)
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you could just remove it and go over the car to check everything works and anything that does not then work is related to that fuse you would then know, other that low speed engine fan F6 30amp and hight speed engine fan F7 50amp
The damage you noticed to the fuse unless related to above fuses could of been done some time back unless you actually felt any heat on the fuse, as you do not say if the fuse is heating now or just you have noticed it must becomed heated in the past as is known area for damage by water/dampness which am sure you are aware of and certainly if ever the fuse board cover was left off.
 
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