Faulty Fuse Holder causes Multiple Electrical Fault Messages

[PeteC]

Today I went to pick up my daughter from school. I parked at the school, quickly picked her up (10 mins) and then drove away. After 2 minutes of driving the following lights have stopped working in my Tiguan:
- front right headlight
- front right indicator
- rear left indicator
- rear middle break light
- rear left fog light

The indicator sound was quick and the error messages appeared on my MVD one after another: "Check front right..." and so on. WTH???

After I arrived to my destination I confirmed visually that the lights didnt work indeed. I spent there an hour and then drove away again. Guess what? Everything was working again perfectly! WTH??? In the meantime, I called VW Service and booked the car in for next week Monday.

FYI: my car had been serviced a week ago, they replaced my original factory installed GPS and radio aerial and re-ran the antenna cable from the head unit to the antenna.

After that I had the flat battery on the weekend (NRMA replaced it) and today this strange electrical issue. Coincidence?

I am not a car mechanic (just an engineer), but it seems like something is loose, maybe a ground wire?

[vdubmotorworx]

Your Ebox fuse board will have melted...the fuse box next to the battery...check the 30amp fuse on the back left...pull it out..you will see it and the board melted....put a new fuse in will get them working for now but you will need a new fuse board....VDUB...

[PeteC]

put a new fuse in will get them working for now

But it is working now. Cannot be the fuse loose?

[08elf]

Had the same thing happen. It started with one fuse blowing which I replaced, then next time smelt something burning which was the fuse circuit board. Go see an auto electrician, cost me about $500 to fix and they checked that everything was grounded properly. just one of those

[PeteC]

Had the same thing happen. It started with one fuse blowing which I replaced, then next time smelt something burning which was the fuse circuit board. Go see an auto electrician, cost me about $500 to fix and they checked that everything was grounded properly. just one of those

But what did it cause?

[vdubmotorworx]

have a check of the fuse mate...you will see if thats your issue..only takes 2 mins to check ...VDUB...

[08elf]

It caused what you described, the car to reported that heaps lights had stopped working all simultaneously. It's the board. Fix that, problem solved.

[PeteC]

It caused what you described, the car to reported that heaps lights had stopped working all simultaneously.

I am sorry to be pain in the ass but that's the effect not the cause. What causes a fusebox melt?

[vdubmotorworx]

Think its just a issue the board itself...as after replacing the board ive not seen one melt again so points not to being a outside issue just proberly manufacturing issue of the board that fails over time..

[PeteC]

just proberly manufacturing issue of the board that fails over time..

Thanks vdub. This sounds pretty bad. I love my car, but I have never ever had any fuse problem with my 10 previous cars I drove. Especially not after 3 years and 5 months, just when the warranty expired. I would not expect something like this from VW, but again this is my first VW, before I drove Fords, Fiat, Nissans, Hondas.

BTW I checked the fuse box and the top left fuse (green 30) have melted just like you said.


Do you know what that fuse is for?