Curious Fault..... Can anyone help....

[DurtyDisco]

Hi all..

My commercial has developed a very strange fault.

The interior lights in the cabin and load area stay on permanently, doors open, doors closed..? they switch off at the front on the switch, but you have to take the bulb out of the back one.

The rear window heater, and rear wiper arm has packed up, as have the rear foglights..?

Any ideas... are there any common systems that I should be looking at as all the fuses seem fine....

Help

Andi

[Range Rover Blues]

Hmmmm.  The interior lights on our soft dash RRC have packed up.  I can't fix them so I'm possibly not the best person to advise, but on ours the lights stayed on until they timed out (battery saver) and now won't come on unless you remove the fuse for a second.

the rear wash wipe doesn't work because of the tailagte, it won't wipe if it thinks the glass is open ie lights on.

Fortunatley I still have the heated screen.

Anyway, given that the front doors have a delay on them and the back ones don't, it's possibly the same relay I am convinced has packed up on ours.  I just have to find it.

[karlo]

Check you door switch connections one may have corroded?

[Evilgoat]

Hi

Sound like you've lost an earth somewhere or the harness has ended up shorted to the chassis. Try running a temp earth wire and see what happens.

[SteveGoodz]

Andi,

I would suspect one of the door switches, or their wiring. If any of the doors are open (i.e. the interior lights are on) then the rear wiper isn't supposed to work.

This somewhat sparsely documented feature had me scratching my head (splinters and all) for hours once trying to diagnose a rear wiper fault  :?

HTH

[DurtyDisco]

I havent checked the rear wiper since I took the load area bulb out, I'll check it this evening and advise.

I was more concerned that with the interior lights on it would be draining the batteries, better to disconnect and have a look in daylight... if the rain ever stops that is!!

 :lol:

[SteveGoodz]

I havent checked the rear wiper since I took the load area bulb out, I'll check it this evening and advise.

I was more concerned that with the interior lights on it would be draining the batteries, better to disconnect and have a look in daylight... if the rain ever stops that is!!

 :lol:

I'm not sure that the bulb itself is relevant to this. I'd take a look at the actual switches first, maybe one has become damaged and is stuck in the "open" position.

If you need the relevant pages from the electrical manual then pm me your email address and I'll send them to you.

HTH

[DurtyDisco]

Had all the fuses out today and I've got the interior lights and fog lights back doing what they should, still having issues with the heated rear screen and rear wiper though!!

Will do more investigating tomorrow as I think it's a bad earth somewhere... but which one is the challenge!!