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Posted

I'm normally fairly competent with DIY work on vehicles, but never had to do anything with an Audi before.   My daughter is visiting with her UK spec Audi A4 B8 TFSI and I need to check for a fuse malfunction.  All the diagrams on the web are very clear and fairly consistent, but the vehicle just doesn't seem to match up!   Passenger-side front fuse location has a single (horizontal) fuse strip with only six or seven fuses present, while the web pics show three (vertical) strips and a decent number of fuses.  Driver's side is simply an empty space, with no fuses or wiring visible, while again the web shows three strips and plenty of fuses.  Luggage space right is a completely empty void and luggage space left has a single strip, with no actual fuses and one relay.  There is a box on the base of the left luggage space but I don't seem to be able to get into it without unbolting it from the car.   I am clearly missing something really obvious here and what started as a simple check has become a bit more of a challenge!


Posted
3 hours ago, Worms said:

I'm normally fairly competent with DIY work on vehicles, but never had to do anything with an Audi before.   My daughter is visiting with her UK spec Audi A4 B8 TFSI and I need to check for a fuse malfunction.  All the diagrams on the web are very clear and fairly consistent, but the vehicle just doesn't seem to match up!   Passenger-side front fuse location has a single (horizontal) fuse strip with only six or seven fuses present, while the web pics show three (vertical) strips and a decent number of fuses.  Driver's side is simply an empty space, with no fuses or wiring visible, while again the web shows three strips and plenty of fuses.  Luggage space right is a completely empty void and luggage space left has a single strip, with no actual fuses and one relay.  There is a box on the base of the left luggage space but I don't seem to be able to get into it without unbolting it from the car.   I am clearly missing something really obvious here and what started as a simple check has become a bit more of a challenge!

Hi if you tell us what you are trying to fix maybe someone on here has had the same problem and may be able to point you to the right place, always found the owners hand book is a good guide.

Steve.

Posted

Hello Rob,

The fuse location, function and amps value is normally shown in the driver’s handbook - well at least used to be. 
Do you have copy, and have you checked? 
Kind regards,

Gareth. 

Posted

Thanks both.  The up/down menu switch to select the aircon mode won't accept any choice but "off" and I reckoned a good starting point was to check the relevant fuse(s).  While the car is currently here in the Highlands, the manual is safely tucked up at its home 350 miles away  🙄.

While the owners' manuals that I have been able to download vary in some details, they all seem to agree on four location where the fuses should be - front left and right and luggage compartment left and right.  My problem is that looking in all four locations, I am coming up well short of the number of fuses that the car must have!   The ten or so that I've found seem fine (as tested for continuity with a multimeter).

I have a very good code reader for my own car, but it only speaks Land Rover rather than Audi.

I must admit that this has reached the point where the Aircon issue is now secondary to the challenge of actually finding out where this car's fuses are hiding!

Posted

hi,here are the pics of the fuses from my owners manual a4 b8 2010.apologies if they dont help.i dont have as many fuses as there is in the book either.

20230625_234109.jpg

20230625_234155.jpg

20230625_234235.jpg

 

 

20230625_234414.jpg

20230625_234429.jpg

20230625_234437.jpg

20230625_234453.jpg

20230625_234556.jpg

Posted

Thanks for taking the time to post these pics.  They confirm what I was expecting to find when I removed the various panels to access the fuse carriers.  But instead I am seeing this:

Front left:

image.png.196982ed7039bc2d52339e6f936ad04e.png

Front right:

image.png.8ff292011266a49e7aaf8b469a858dc9.png

 

Rear right:

image.png.f2d81c49849eb8e70afdcbc2c9621223.png

 

Rear Left:

image.png.f0a2296b3dfe17987ededd329db43cf0.png

...so a total of 12 fuses?

I'm sure Audi have done something very clever and totally obvious to most Audi owners, but it has me (as a poor benighted Land Rover owner) totally stumped!  😀

 

  • Like 1
Posted

scrapyards have more fuses in their cars than yours.is there any in the engine bay.i'me con-fused-ed.shall i go get me coat.hope somebody with a similar car can confirm if they only have minimal fuses too.here are pics of mine.

20230626_090020.jpg

20230626_090207.jpg

20230626_090340.jpg

20230626_090401.jpg

  • Like 1
Posted (edited)

Thanks.  Yes you seem to have a healthy number of fuses compared to this car.  I have looked around the engine bay, including below the rubber cover between the engine and the windscreen.  I've also checked in beside the battery, below the spare wheel.  I'm still convinced that I must be staring right at the fuse carriers and somehow not seeing them!

As to the aircon issue, the display shows Aircon On, if I simply put the ignition on without starting the engine, but it immediately goes to Off when I start it up.  I am assuming it is probably a compressor clutch issue and that the electronics are ok with demanding an "on" position with the engine off but revert to off as soon as it tries (and fails) with the engine on.  Before assuming something expensively mechanical, though, I would want to rule out the simple electrical version of the problem where it can't achieve the on position because of a blown fuse. 

Edited by Worms
  • Like 1
  • 1 year later...
Posted

Hi Worms I have exactly the same issue re: aircon problem and lots of fuses not where they should be! Did you get to the bottom of what the issue was? 

  • 2 weeks later...
Posted

Huwski, sorry not to get back to you on this!  

No, we drove the Audi south without aircon that time and I think my daughter got her local garage to fix it the next time it was in for a service. So I'm afraid I never learned any more about the aircon problem or indeed where all the fuses are hiding!

Noting that my original query was June 23, I don't think we have had aircon weather here in the Highlands since then!

  • Haha 1
  • 2 weeks later...
Posted

Cheers Worms, I'm guessing if it was full-on fault-finding/aircon compressor blown/replace that your daughter might have mentioned the ££££££££££ cost! No aircon needed here in Cumbria either 🙂 Ionically, when it was -8deg the other week all 3 aircon options were available 

Posted

Huwski,  I will be seeing my daughter (and her car!) at the weekend, so I'll try to remember to ask what it was that she got done.  I think it was a simple re-gas, but I wouldn't have expected that to have caused the switching issue, unless the "vorsprung durch technik" includes a pressure sensor on the gas?  She is actually in Co. Durham, so hasn't much more need for aircon than yourself!

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