Chris NottEM Tuning
Results 1 to 20 of 20
  1. #1
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186

    New battery wont hold charge

    Hi All,


    A4 B6 130 wouldnt start a week ago, checked battery and it was the original Audi part, so thought its time to change.


    Bought a new Bosch S4 fitted and all was fine when I drove it daily, parked it Friday and left it till this morning (Monday) and when I started it the low battery (brake symbol) came up and it sounded sluggish when starting.


    Hoping someone can recommend me a few things to check, so far I need to:


    Check the black box on the positive terminal
    Check alternator cables arent corroded
    Check if Hazard light stays on
    Check battery voltages when running and not running


    Can you guys think of other checks I need to do?


    Thanks in advance


  2. # ADS
    ADS
    Join Date
    Always
    Posts
    Many
     
  3. #2
    4th Gear

    Status
    Offline
    Join Date
    Jul 2007
    Posts
    765
    Who fitted it ?Did they clean and tighten connectors.Had the old battery gone flat?If so you may have other faults which caused that eg alternator not charging

  4. #3
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    Morning Mike, I fitted it, contacts are clean, connectors are tight. Old battery went completely flat, no central locking or anything, it was a Monday morning and I needed to get to work so once I saw the old battery was original parts I assumed that that was definitely the issue but now realize it was probably part of another issue.

  5. #4
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    Thanks for the responses.


    Had a garage check voltage, had 14v while running, 13 and decreasing till 12 something when turned off, so seems alternator is fine.

    He had one of those light up screwdrivers and it lit up so somethings pulling current, but he couldnt measure the drain as never had the correct meter. I tried pulling a few fuses but nothing put the light out. I wouldve thought this would be (A) because the car pulls a little current anyway or (B) I pulled the wrong fuses. Guess I need a voltmeter to find that out.

    Any other ideas guys?

  6. #5
    Reverse Gear

    Status
    Offline
    Join Date
    Sep 2004
    Posts
    13
    Apologies not wanting to offend but none of the interior lights are left on are they??

    The 2 lights in the boot are turning off when the boot is closed?? Simple things like this can drain a battery relatively quickly....Have you made any changes to the stereo or alarm prior to the first battery going flat??

  7. #6
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    None taken, I know how sometimes it can be the simplest things, but I did check, I also climbed into boot via rear seats but theyre also off.

    No changes to stereo or alarm.

    Only thing I noticed months ago was I have no radio reception which I know is the antenna amp, so wondering whether thats the drain, but weather was warm then so it may not have pulled enough voltage to bother the battery, now its cold. I pulled the radio fuse and screwdriver still glowed but perhaps thats it.
    Last edited by twist123; 24th October 2011 at 15:29.

  8. #7
    4th Gear

    Status
    Offline
    Join Date
    Jul 2007
    Posts
    765
    Could be the time to have a Vagcom?

  9. #8
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    The antenna throws up a code when I scan the radio, but nothing else does.

  10. #9
    quattrojames's Avatar
    Moderator

    Status
    Offline
    Join Date
    Mar 2008
    Location
    Dorset
    Posts
    13,689

    My Social Networking

    Follow quattrojames On Twitter Add quattrojames on Facebook
    It's always possible you bought a duff battery?
    Ingolstance Read about my A6 HERE.

  11. #10
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    Guess so but probably highly unlikely as it was from Eurocarparts.

  12. #11
    "Stick a V8 in it!"

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    14,900
    Well charge the battery and see if it works again.

    If it does, its unlikely to be the battery itself, and far more likely that both batteries were drained by the same fault.

    You need to put an ammeter in series with one of the battery leads and then investigate the power drain. A light up screwdriver isnt going to tell you anything.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  13. #12
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    The battery never ran completely dead, luckily the car did start after displaying the brake symbol (just sounded tired). After driving it charges really quickly as my 20 mile drive to work charged it to 12v according to garage (14v when idling so alternator should be good).


    After driving and parking overnight, the car started perfectly fine this morning, but thats pretty normal, its only when I leave it 3-4 days it sounds tired, so it must be discharging. I took out the 20A radio fuse last night anyway, btw checked and hazard light does go off.


    I didnt think that screwdriver trick would, as apparently the car drains 50 milliamps anyway so the stupid lights always going to be on. Can anyone point me in the direction of a multimeter on Ebay (cheap if possible) that wont blow up when checking the fuses for drain?


    Thanks again guys
    Last edited by twist123; 25th October 2011 at 14:01.

  14. #13
    marktdisport's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Jul 2011
    Location
    mids
    Posts
    1,193
    you fixed this yet m8y got a m8 whos got a 04 130tdi se which drained the battery, fitted new battery 2 weeks ago and it's drained it again, told him to get it on vagcom..... to check the aerial
    A4 TDI 130 SPORT..
    now sold but still in the family, gone back in time to the cupra R again..

  15. #14
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    No such luck, left it over the weekend without radio fuse and its dead again, becoming really frustrating. Anyone know how to check the convenience module using vagcom? Any other checks I can do using Vagcom to check for drain?

  16. #15
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    Just pulled 01562 - Right rear door cant unlock, not sure if its relevant though. Door does indeed lock and unlock.

  17. #16
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    Right, used a multimeter, drain is at 0.80+ amps, did the fuse thing and fuse 1 (aircon) is pulling about 0.20 amps and fuse 15 (instrument cluster & navigation) is pulling about 0.30 amps. Nothing else is really draining any currrent. I dont have navigation but annoyingly I dont know whether its the instrument cluster or supposed navigation so not sure where to look, as instruments all work fine, I have tried a new fuse, still drains, when I pull the fuse I get a message at the mileometer 'fuse'.

    My aircon compressor is knackered so Id imagine I can just pull the fuse or will it affect my heater and climate?

    Any help much appreciated.

  18. #17
    "Stick a V8 in it!"

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    14,900
    0.8A is waay high.

    That said, you need to open the door to pull fuses, which means all the interior lighting, convenience module and cluster is going to be powered up?

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  19. #18
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    Correct, I removed fuse, closed door and waited for the cluster display to turn off and turned off all interior lights, then took the reading in the hope it would be accurate, not sure if the readings are high because the convenience module isnt turning them off due to the car not being locked.

    If I take the reading off the positive in series with the immobiliser on I get the same reading except the alarm goes off. Sigh.

  20. #19
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    The plot thickens. Voltage when off 12.4 voltage when on 14, voltage with load 13.9 so alternators okay. Checked drain after locking car and waiting for convenience unit and it dropped to 0.09A, much better. Cant believe that would drain a new battery in 3 days.

  21. #20
    1st Gear

    Status
    Offline
    Join Date
    Jun 2009
    Posts
    186
    Whats teh safest way to disconnect the alternator overnight to test diodes?

 

 

Similar Threads

  1. lappy wont charge more than 55%
    By rasA4 in forum Home Cinema, Hi-Fi and Gadgets
    Replies: 10
    Last Post: 17th February 2010, 16:57
  2. Put a new battery in My key Now it wont work !
    By ChuckH in forum General Chat
    Replies: 17
    Last Post: 9th March 2009, 18:30
  3. How long will it take to charge a completely dead battery in my S3?
    By comdw in forum A3/S3 Forum (8L Chassis)
    Replies: 4
    Last Post: 25th September 2008, 23:49
  4. battery charge problem
    By imported_jamesgo in forum TT/TT-S/TT-RS Forum
    Replies: 5
    Last Post: 2nd August 2004, 21:51
  5. Battery Loosing Charge.....
    By rickquattro in forum General Technical / How To
    Replies: 5
    Last Post: 14th January 2004, 16:38

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO