MrBoe Posted December 3, 2012 Share Posted December 3, 2012 Our battery is practically dead and buried on our 2006 Q7, is this usual? Wont seem to hold a charge very much. Im suprised for only 6 years old! Has anyone had a new battery fitted at somewhere other than Audi? Im lothed to pay main dealier prices. Halfords say they will fit ant battery no matter how long it takes for 6.99! but im aware there may be some sort of coding required to sync up the battery to the car? bit too technical for me to be honest! any ides anyone? Quote Link to comment Share on other sites More sharing options...
The Sat Diver Posted December 5, 2012 Share Posted December 5, 2012 Don't want to teach my granny and all that.. but the battery is under the front passenger seat and is not the easiest to replace by the looks of it (see my previous post) However having had a lot of high tech motors.. I always find that if you connect a battery charger to the leads before you disconnect them from the battery you are removing.. an uniterrupted 12volt supply is maintained to the cars electrical system and you can then simply remove the old battery.. install the new battery then reconnect the leads.. once that is done.. simply disconnect the battery charger and your back up and running Cheers Gilbert Quote Link to comment Share on other sites More sharing options...
Steve Posted December 5, 2012 Share Posted December 5, 2012 Dont some batteries come with a 10 year warranty? Read that somewhere.. check it out you never know. Quote Link to comment Share on other sites More sharing options...
Glen Posted December 6, 2012 Share Posted December 6, 2012 Having a new battery fitted anywhere outside the main dealer network is usually quite reasonably priced. The Halfords deal sounds good to me. As for coding I doubt there'll be much of a problem, just plug in and it works like a battery on any other device as far as I'm aware. Best take a look at what Steve mentioned too, think I saw that too. Quote Link to comment Share on other sites More sharing options...
Tech Posted February 16, 2013 Share Posted February 16, 2013 Batteries need to be coded to the energy management ECU with regards to battery make, capacity and serial number. This is to ensure the energy management does not cut the current shut off stages in too early or late by not knowing the capacity and charge state of the battery. Therefore coding is vital otherwise you could find things like your electric opening tailgate etc stop working for no reason. This is the same with all modern Audi's Quote Link to comment Share on other sites More sharing options...
Glen Posted February 18, 2013 Share Posted February 18, 2013 Thanks for clearing that up Tech. I haven't had the issue since my first Citroen AX which had a battery on its last legs anyway. Glen. Quote Link to comment Share on other sites More sharing options...
Tech Posted February 18, 2013 Share Posted February 18, 2013 Mark has posted an SSP in the 'Audio/Video/electronics' section which details pretty much what I said above. Might be an interesting read for some people. Quote Link to comment Share on other sites More sharing options...
vw754 Posted March 7, 2013 Share Posted March 7, 2013 ive replace in my q7 with this battery,i coded it by part number,serial number,but it dont give me an option for bosch,so i had a list in vcds to chosse from like: varta- moll- banner- exide- jff,boading so i chose varta.............audi say 110AH 520amps.........ive put in 100ah 830 amps........hope it does the trick.......heres the battery.......http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_734844_langId_-1_categoryId_165762#tab2 Quote Link to comment Share on other sites More sharing options...
Tech Posted March 9, 2013 Share Posted March 9, 2013 That should be fine, I'd like to have seen Halfords fitting that for £6.99 when they realised how much of a job it was! Quote Link to comment Share on other sites More sharing options...
vw754 Posted March 9, 2013 Share Posted March 9, 2013 That should be fine, I'd like to have seen Halfords fitting that for £6.99 when they realised how much of a job it was! seems ok,after 18.5 hours the engine started instantly.......just hope it stays like that,dont think the batteries last very long in the q7........i got plent of guaranttee left anyway lol.........i asked halfords for £6.99 he was gobsmacked when i told him where it was,started saying...er.....ummmmm....er .....il find out,i told him dont bother im doing it anyway.........as for coding halfords guy had no idea. Quote Link to comment Share on other sites More sharing options...
j7uga Posted April 29, 2015 Share Posted April 29, 2015 make sure u get the auxiliary heather off on mmi that causes the battery drain I had two new batteries before I realise this Quote Link to comment Share on other sites More sharing options...
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