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B6 Forum 2002-2005 Audi A4 & Audi A4 Cabriolet / 2004 Audi S4. (Audi A4 Forum, Audi S4 Forum, Audi RS4 Forum)

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Old 05-29-2008, 04:45 AM   #1 (permalink)
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Default How do I remove battery on A4?

Hi

I need to remove the battery from my '02 A4 3.0L Cabriolet.

I have a serious water flood coming into the passenger footwell and I think I need to lift out the battery to clear the drain holes?

I have removed the long top cover and disconnected the battery. However I cannot see how the battery is secured in place. There appears to be a plastic strip (on the rear of dash firewall?) along the back bottom edge behind the battery that the battery case bottom lip appears to be wedged under. This make me think I should be able to tilt the front of the battery slightly and lift it out, however it is fixed in position.

Can anyone tell me how to release the battery?

Thanks!
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Old 05-29-2008, 07:02 AM   #2 (permalink)
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Hey there!
I own the 1.8T of the same year. SO. I'm going to assume the secondary firewall is on your vehicle also.
I changed mine like this:
1) You slide-off the overly long, top plastic cover;
2) If your car has the secondary firewall, with a piece of, thick, cubed rubber running on top of the secondary firewall, all the way from right, to nearly all the way over to the left.. lift it of the firewall, and fold it over to the engine side of that wall!
(I originally thought it was connected to the A/C, & that it was it's piping.. but it's not, it was electrical!!)
3) Get you torch, & look down between the battery & the secondary firewall.
You should see, a bolt. ..that requires a long extension socket wrench, with a size 17 socket?? (if memory serves me!)
But that's for an A4 1.8T model.
I cant say I've seen the 3.0 engine bay, but I think there shouldn't be too much variation, if there is a that secondary firewall.

But still, I hope that's been helpful! Good luck.
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Old 05-29-2008, 07:34 AM   #3 (permalink)
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Hi. Thanks for this. I removed the long cover, pulled the thicked cubed rubber over to the engine side and I can see a socket head bolt down below at the front of the battery. It looks about 7mm size allen key is needed?, however it's in a very difficult to access location with 2 steel pipes(A/C?) running accross the top.

Do I need a special tool to access the bolt?

(Do Audi make it difficult to do simple tasks on purpose?)
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Old 05-29-2008, 08:30 PM   #4 (permalink)
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..I apologize for any inaccuracies, now that you remind me, it is NOT a socket, which I at first glance thought it would be!!
& NO; you don't need a special tool. (but I don't recall whether I used a 'star' socket, or 'allen-key' style socket, because I own both, in my socket set!! ..sorry for forgetting to tell you, mate!)
But I did use a miniature socket set with all of the extensions it had, & taped the head with electrical tape, because of no magnet!
Miniature socket sets are very cheap to buy, from your Clearance, or Reject Shop type of place.
But you will find, that you will use your 'miniature socket set' with all of the patterns ('star' & 'allen-key') on your car regularly, so maybe an investment in a more solid set could very well be a good investment. But a cheap set should get you out of trouble, if you decide to go that way.
Ooh! ..& you will need WD40, in case it wont budge, like in my case.
I hope this has been at least, a little more helpful..(?)
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Old 05-29-2008, 08:36 PM   #5 (permalink)
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p.s. YES! ..Audi design their cars, so that you have to take it to them!
But it only LOOKS more complicated than it actually is.
Good luck man.
It's all trial & error, like everything else that you'll eventually do very well..

Last edited by Audi-ble Trigger; 06-01-2008 at 06:08 AM.
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Old 07-15-2008, 09:11 AM   #6 (permalink)
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I followed the instructions and had absolutely no issues!!!! (04 A4 1.8T)
I had to clear out all the damn leaves from the drain underneath the battery. Hopefully my floors won't flood anymore!!
Thanks so much Audi-ble Trigger!!
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Old 07-17-2008, 05:57 AM   #7 (permalink)
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Quote:
Originally Posted by lady-v4 View Post
I followed the instructions and had absolutely no issues!!!! (04 A4 1.8T)
I had to clear out all the damn leaves from the drain underneath the battery. Hopefully my floors won't flood anymore!!
Thanks so much Audi-ble Trigger!!
Ow, lady-v4.. All that water can't be good for the car!!
But I'm glad this helped.
I think between Trebor & myself you received the complete picture, & that is why these forums work!!
(I work so much, I barely get time to go on forums!)
It's nice to be appreciated though.. & it was my pleasure to assist, with what sounds like a particularly messy situation!
Take care, & fingers crossed you've solved the problem.
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Old 09-21-2008, 09:23 PM   #8 (permalink)
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-2004 Audi A4 3.0 Battery replacement-

I just completed swapping the battery on a 2004 Audi A4 3.0 Ultrasport. It was a very frustrating experience. You will need a 10mm wrench for the battery terminals and I used a variety of 6mm allen wrenchs. If you have 6mm allen wrench socket wrench attachment and some shorter length extensions then that should be enough.

I removed the cabin filter top cover and the cabin filter lower cover to gain some space. There is no need to remove the black trim below the window. There is a heavy cross member just in front of the battery that blocks access to the single allen bolt that holds the clamp that holds the battery in place. There is at least a helpful handle on the clamp/bracket that allows you to more easily control it once you fully loosen the bolt. To get to that bolt I removed 4 6mm allen bolts that held the heavy cross-member in place just in front of the battery. Unfortunately, after removing the bolts, the cross-member did not come out due to it being attached to the car still around the center point by a means I was not able to see clearly. At this point the cross-member is loose enough to allow a long 6mm allen to reach the bolt holding the battery in. The bolt is just forward of the center of the battery. Once the bracket is loosened it can be slid over towards the passenger side of the car and pulled out with a little manhandling of the cross-member. It is very awkward to pull the battery out due to its weight but it seems to clear quite easily. I did struggle a little bit when trying to get the battery bracket bolt started again since it was difficult to get the bolt vertical with the cross-member obstructing the access. Once I crammed a small flashlight in to hold that cross-member out of the way then I had a much easier time.

I picked up the battery (94R) at Pep Boys for 140.00.

The experience reinforces my desire to never own an Audi ever again. I would explain the other reasons but I'm sure anyone savy enough to use this site knows what I am talking about. Does anyone know what Audi chages for a battery replacement? Will it beat the estimate I got a while ago for over 800.00 for an oil change and a repair of a glove box hinge?
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Old 03-23-2009, 07:59 AM   #9 (permalink)
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Default Removal of battery from A4 Cabriolet quattro 3.0

I have read all the above and think there are some very complicated pieces of advice which will significantly slow down/complicate the procedure.
The main points I'd emphasis are:
Once the long thin cover is removed (across the top of the battery) then the next thing is to pull up and over (onto the engine side) the square-section rubber tube (it's about 2inches x2 inches) that runs across the rear of the engine bay. It contains electrics and is flexible. To do this you need to prize off two metal clips with a blade - they push back on, afterwards.
Now the battery can be undone with, I think 10mm spanners. Put a charge on the leads so you don't lose the radio code etc.
Now- and you'll need an extension to undo it - looking down at the base of the middle of the battery there's a small space which gives you access to a bolt (7mm allen key I think- see other entries above). You need it to reach down something like 24cms (guess) hence the need for extension. There is no need to remove the heavy steel cross member as suggested above and which will add hours to the job/removal of air filter boxes etc- save yourself a lot of time by ignoring this!).

The fiddly bit is making sure the fixing bolt is completely undone and then- using the plastic handle that's attached to the bolt- slide the battery fixing to the rhs (but no need to remove) of the battery. Now the battery can be hauled out.

For what it's worth I spent a couple of hours trying to figure it out - getting angry with Audi - then went to a local garage who did the job including fitting a higher spec Bosch battery for 128. Pretty fair and I didn't need to buy an extension set! (the highest Audi price I had quoted was 240, by the way...). And he let me watch so this is my story!

Good luck- but don't go unbolting lots of other parts for access- it's not needed.
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Old 05-05-2009, 04:38 PM   #10 (permalink)
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I wish I have read this thread sooner.

My 2001 AUDI A4 2.0 broke down on me last Thursday (30 April 2009), so I called the RAC first thing following morning to seek for help. The RAC chap checked the battery and said it was completely flat, so he jump started the engine and did a couple of tests on the battery. He said the battery passed both tests, it was still in a working condition and it only needed a full proper charge. Anyway, tried to charge the battery several times over the weekend, no luck at all, felt really frustrated and panicking abit, so called the AUDI centre and booked the car in for Tuesday (today).

I took the car in first thing in the morning, the centre said they would called me at 3pm to let me know how they were doing, but I didn't get any phone calls at all, so I decided to go back to the centre instead. The chap from the service team said the battery was completely flat and it needed to be fully charged first before the technician could start doing a diagnostic test on the car. He suggested me to leave the car with him over night, I agreed and left the centre. Then an hour later, the same chap rang me and said the battery was not holding any charge at all, so it needed to be replaced. To be honest, after not being able to drive my car properly for 6 days, I just couldn't help myself to agree any jobs to be done on the car to make it run again.

So I agreed to replace the battery but it won't happen until Thursday, cos the chap explained batteries only get delivered to the centre every Thursday, how strange is that?? But now I have read what 1Boysie said here about he was quoted 240.00 to replace the battery on his car, I am getting worried now. I didn't ask the centre how much it will cost to replace the battery on my car cos I didn't think it would be something to break my bank account. But if I do need to pay 240.00 to replace the battery, I will definitely not be very impressed at all!! I have found a Bosch battery for 90 online, I didn't get it cos I didn't realise the battery was dead, especially after the RAC chap told me it was still in a working condition.

I guess in this stage, I will have to bite the bullet and let the AUDI centre to replace the battery for me. My car won't start at all, and also I am having some problems with the Climate Control unit, not yet know if it is to do with the battery. But if it is, I will write a complaint letter to the previous AUDI centre, cos I took my car to them for the problems of the Climate Control unit, they convinced me the unit was faulty and quoted me 600 to replace the bloody thing.

I can't agree more with Side1out's comment about not buying another AUDI ever again. I bought mine from brand new in April 2001, and since then it has had major problems every year, even in the first 3 years. So far I have changed the coil pads 3 times, replaced a cracked air pipe inside the engine, the CD player has stopped working 4 years ago, replaced the Convenience Control unit (that costed me 470.00), replaced the temperature gauge, fixed the glove box hinge and light, and now I am being told to replace the Climate Control unit which I think it is still working OK. The whole thing is just a joke!
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