Notices
 

  

User Tag List

Thread: Something draining my battery?

Results 1 to 8 of 8
  1. Something draining my battery? 
    #1
    Join Date
    Apr 2007
    Location
    France
    Posts
    2,564
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    2 Post(s)
    I recently changed my 6-year-old battery, because for the previous few months it didn't seem to be holding a charge (it didn't take long for it to drop to just over 12v), and failed to start the car after it had been standing for less than a week.

    Unfortunately the new one seems to be doing exactly the same thing. I've checked and cleaned all connections, and a meter put across the terminals when idling shows 14-15 volts going in. I've kept the old one, and sitting on the bench in my garage holds its charge longer than the new one on the car.

    There's no alarm fitted, and no other accessories other than an aftermarket rear parking sensor fitted just after I bought the car 10 years ago. It's garaged, locked, and the weather's more than warm enough to have no effect.

    Any thoughts on what could be taking the power? I don't have VCDS, and am reluctant to bother with the cheapo Chinese scanner that I use on my mate's wife's Renault.

    Thanks in advance
    Q
    2006 (Dec.) B6 2.0TDi 140 Confort | Moka anthracite nacré | CControl | Highline MFD | Chrome Grill | Meta Targa rear parking sensors | Debadged
    1996 Laguna 2.2D
    1977 MGB roadster
     
    0 0 0
     

  2. Re: Something draining my battery? 
    #2
    Join Date
    Oct 2008
    Location
    Pembrokeshire
    Posts
    13,129
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    22 Post(s)
    use your meter on amps. remove the earth lead from the battery and re connect through the meter. close the bonnet latch so it thinks the bonnet is closed, and lock the car. after 20 minutes everything should have gone to sleep and you cans see how much electricity is going out. could be a boot light or glovebox light staying on so rule those out first as after that its something thats actually faulty. check by pulling fuses until the amps drop to almost zero.
    Audi 80 tdi avant with 360,000 miles...
     
    1 1 0
     

  3. Re: Something draining my battery? 
    #3
    Join Date
    Sep 2008
    Location
    SE London
    Posts
    1,451
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    3 Post(s)
    As per Zollaf's reply. When in sleep mode the current (measuring the battery volts won't help) i.e. with meter in series with the negative battery terminal and chassis should be max 50mA. So when you've put your meter in series, closed the bonnet, and left car for 10 mins to go into sleep mode you start out with the highest DC amps range you've got on your meter and gradually reduce the range down until you've got a reading the needle (or LCD display) gives.

    Still use an olde Avominor that's only got a maximum of a 1A DC current range, but goes down in steps: 100mA, 10mA, 1mA, and .1mA
    Last edited by RichardSEL; 31-03-2017 at 07:53 AM.
    **SOLD** '06 B6 Passat 2L tFSI SEL 3c5, 232 bhp, Geba metal water pump, GlowShift boost & oil pressure gauges, paddles, powder-coated black Chicago rims yellow calipers, JVC KW NX7000/E sat nav DAB BT Ripspeed sub reverse cam, hi-line MFD, MFSW, Skyline tails, Laminex fogs, LEDs, indicator DRLs, Philips X-tremeVision heads, PowerFlow chrome exhaust, tints to rear, vanity VRM, TPMS, power-fold dimming mirrors, brolly
     
    1 2 0
     

  4. Re: Something draining my battery? 
    #4
    Join Date
    Apr 2007
    Location
    France
    Posts
    2,564
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    2 Post(s)
    Thanks both for the replies. I'll do some follow-up when I've bought another meter - it gave up measuring amps a while ago after I lent out.

    In the meantime I'll put the Laguna battery on the Passat overnight just to eliminate definitively that it's not the battery.
    2006 (Dec.) B6 2.0TDi 140 Confort | Moka anthracite nacré | CControl | Highline MFD | Chrome Grill | Meta Targa rear parking sensors | Debadged
    1996 Laguna 2.2D
    1977 MGB roadster
     
    0 0 0
     

  5. Re: Something draining my battery? 
    #5
    Join Date
    Apr 2007
    Location
    France
    Posts
    2,564
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    2 Post(s)
    Got a new meter.

    Silly question time - once I've connected the meter, shut the bonnet and locked and left the car to go into sleep mode, I'll need to unlock it again to access the fuses inside the car and under the bonnet. Won't unlocking the car wake it up?

    I can dismantle my old MG with a box of spanners, but these modern 4-wheeled computers are way beyond me.
    2006 (Dec.) B6 2.0TDi 140 Confort | Moka anthracite nacré | CControl | Highline MFD | Chrome Grill | Meta Targa rear parking sensors | Debadged
    1996 Laguna 2.2D
    1977 MGB roadster
     
    0 0 0
     

  6. Re: Something draining my battery? 
    #6
    Join Date
    Sep 2008
    Location
    SE London
    Posts
    1,451
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    3 Post(s)
    Well, yes but let's see what current reading you get when it's locked up and asleep?

    It's the jaberwockies that come in the night and steal your milliamps, one by one. They wait until you're asleep
    **SOLD** '06 B6 Passat 2L tFSI SEL 3c5, 232 bhp, Geba metal water pump, GlowShift boost & oil pressure gauges, paddles, powder-coated black Chicago rims yellow calipers, JVC KW NX7000/E sat nav DAB BT Ripspeed sub reverse cam, hi-line MFD, MFSW, Skyline tails, Laminex fogs, LEDs, indicator DRLs, Philips X-tremeVision heads, PowerFlow chrome exhaust, tints to rear, vanity VRM, TPMS, power-fold dimming mirrors, brolly
     
    0 1 0
     

  7. Re: Something draining my battery? 
    #7
    Join Date
    Apr 2007
    Location
    France
    Posts
    2,564
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    2 Post(s)
    Deep joy - got the meter all set up, sitting on the bonnet, everything locked and waiting for the car to go to sleep. Went in for some lunch, came out an hour later and it was raining, hard (unusually, the car's sitting outside its garage for reasons I won't bore you with). Thought I'd turn the meter on anyway, no point in getting wet when you can get soaked, and it showed a row of zeroes.

    Pulled the wires out of the meter and took it in to try to dry it, haven't bothered to open it, I'm just a shade pee'd off.

    Anyway, I'm out of here till at least the weekend. My wife's already in the UK (serious illness on her side of the family), so a meter is the least of my worries right now.

    Follow-up will eventually follow. Thanks again.
    2006 (Dec.) B6 2.0TDi 140 Confort | Moka anthracite nacré | CControl | Highline MFD | Chrome Grill | Meta Targa rear parking sensors | Debadged
    1996 Laguna 2.2D
    1977 MGB roadster
     
    1 0 0
     

  8. Re: Something draining my battery? 
    #8
    Join Date
    Apr 2007
    Location
    France
    Posts
    2,564
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    2 Post(s)
    OK, back on it. There is no abnormal drain. However, while I've been away it occurred to me that about 6 months ago I found the battery flat (usual flashing dash lights etc. 9V on the meter). I thought at the time it was where I'd used the battery to start our old Laguna (battery totally knackered, jump leads only good enough for a petrol engine), and not tightened one of the battery post clamps when I replaced it.

    Alternator seems to be working ok, I've got one of those cheapo voltmeters that plug into the cigarette lighter.

    I'm guessing there's an intermittent fault somewhere, so I'll go over all the obvious connections and make sure they're clean. I'll start by leaving open the ski port in the back seat - should be a give-away if the boot light occasionally stays on!
    2006 (Dec.) B6 2.0TDi 140 Confort | Moka anthracite nacré | CControl | Highline MFD | Chrome Grill | Meta Targa rear parking sensors | Debadged
    1996 Laguna 2.2D
    1977 MGB roadster
     
    0 0 0
     

Similar Threads

  1. Battery Draining
    By noshock65 in forum Audi A6 - C6 Forum - 2005 - 2010
    Replies: 43
    Last Post: 14-03-2017, 02:31 PM
  2. is rns e draining my battery on A3
    By dart1114 in forum In Car Entertainment
    Replies: 5
    Last Post: 04-03-2014, 10:49 PM
  3. Question Battery Draining
    By ChamRider in forum Audi A3 - 8L - 1996 To 2003
    Replies: 4
    Last Post: 18-09-2013, 01:43 PM
  4. 97 A6 draining battery
    By hootonm in forum Audi A6 - C4 Forum - 1994 - 1997
    Replies: 10
    Last Post: 18-08-2010, 09:03 PM
  5. battery draining
    By catpassat82 in forum Passat - B5 Forum - 1997 -2005
    Replies: 1
    Last Post: 24-02-2008, 10:52 AM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  




  



Disclaimer: VW Audi Forum is an "independant enthusiast website", administered in line with guidelines supplied by VAG in the UK, and is in no way related to any of the Worldwide Volkswagen,Audi,Seat,Skoda,Bentley,Bugatti,Porsche or Lamborghini group of Companies. For official up to date information on any of there vehicles, please visit the official websites. Any comments made throughout this website, are the views of the respective poster, and in no way represent the views of the VW Audi Forum Administration, or the worldwide Volkswagen & Audi Group of companies.


VW Audi Forum do not vet and are not responsible for any information which is posted in this forum. All content is viewed and used by you at your own risk and we do not warrant the accuracy or reliability of any of the information.


Copyright: Certain "words", "phrases" and "Images" used on this website by the Administration are "Copyright" of Volkswagen GB, Volkswagen AG (Germany), Audi GB, Audi AG (Germany), Volkswagen Motorsport GB, Volkswagen Motorsport AG (Germany), Audi Motorsport AG (Germany), Volkswagen Racing GB, Bentley, Bugatti, Porsche and Lamborghini. No image can be replicated by anyone WITHOUT the relevant Companies written permission.


All trademarks and copyrights remain property of their respective owners.

No part of the VW Audi Forum website or forum may be reproduced without written permission from the site administration


PLEASE NOTE - PERSONAL ABUSE, ABUSE AGAINST THIS OR ANY OTHER WEBSITE OR ANY COMPANY WILL NOT BE TOLERATED. OFFENDERS WILL BE MODERATED OR EVEN BANNED.


This website and forum are best viewed at a minimum resolution of 1024 by 768.



  



- VW AUDI Forum - The #1 Volkswagen (VW) Group Forum - Volkswagen (VW) - Audi - Seat - Skoda - Bentley - Bugatti - Lamborghini - Porsche - VW Audi Forum -


- www.vwaudiforum.co.uk - www.vwaudiforum.co.uk -