1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Electrical power loss

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by Red_Stafford, Feb 28, 2012.

  1. Red_Stafford

    Red_Stafford Member

    Joined:
    Oct 8, 2010
    Messages:
    61
    Likes Received:
    0
    Hi all I have a 2003 A4 estate 2L TDi 130 sport, and whilst driving I get electrical power loss, sometimes the power goes and the clocks don't reset and then other times the clocks completely reset but the car always comes back on straight away, I'm getting worried because ita cut out a few times in dodgy situations such as around corners with no power steering or when u pull out in front of someone
     
  2. Advert Guest Advertisement


  3. Red_Stafford

    Red_Stafford Member

    Joined:
    Oct 8, 2010
    Messages:
    61
    Likes Received:
    0
    When it cuts out the car beeps 3 times and the handbrake symbol appears and then the car re starts
     
  4. Mike B

    Mike B Well-Known Member

    Joined:
    Jul 10, 2007
    Messages:
    1,049
    Likes Received:
    38
    Are you saying that the engine cuts and you have restart?I think you have a bad cnnection somewhere and it may need diagnostics if you cant trace it .Are the battery connections tight?
     
  5. kite

    kite Member
    VCDS Map User

    Joined:
    Oct 12, 2007
    Messages:
    678
    Likes Received:
    17
    Check your brake fluid level
     
  6. Red_Stafford

    Red_Stafford Member

    Joined:
    Oct 8, 2010
    Messages:
    61
    Likes Received:
    0
    I've checked the battery terminal and they are fine, just wondering what would the brake fluid have to do with it ?
     
  7. kite

    kite Member
    VCDS Map User

    Joined:
    Oct 12, 2007
    Messages:
    678
    Likes Received:
    17
    Brake warning on the dash could be low fluid. Have your battery checked.. It could be a sign of a dying battery
     
  8. Red_Stafford

    Red_Stafford Member

    Joined:
    Oct 8, 2010
    Messages:
    61
    Likes Received:
    0
    I've never had a problem with the battery, it starts first time no problem even in the coldest weather
     
  9. PAULF

    PAULF Active Member
    VCDS Map User

    Joined:
    Jan 27, 2011
    Messages:
    708
    Likes Received:
    64
    I'm having a similar problem here DIS dead on my b5. I'm now suspecting an alternator diode pack, but am not really getting anywhere fast! I don't have exact same symptoms, but it has been a headache hunting down each theory - especially as the fault keeps changing a little! I would look at your earths first, and also check for fault codes. The codes may indicate where the power loss is coming from by what modules are effected.Electronics really don't like low voltage, whereas no volts just switch them off. (Hence the comments about bad battery)
     
  10. brownycab

    brownycab Member

    Joined:
    Sep 11, 2011
    Messages:
    31
    Likes Received:
    1
    i have this problem with my a4 cab does your battery light flicker randomly round corners? or when you give it some beans? mines cut out a few times excactly same as you have described. have you sorted the problem if i find out what is wrong i will PM you mate
     
  11. Red_Stafford

    Red_Stafford Member

    Joined:
    Oct 8, 2010
    Messages:
    61
    Likes Received:
    0
    I haven't noticed the battery light flashing ?
     
  12. brownycab

    brownycab Member

    Joined:
    Sep 11, 2011
    Messages:
    31
    Likes Received:
    1
    yer mine flickers a bit then if you push the car harder it just turns off like the ignition has just been turned off then a mil of a second after cars on and running again does yours do this?
     
  13. Red_Stafford

    Red_Stafford Member

    Joined:
    Oct 8, 2010
    Messages:
    61
    Likes Received:
    0
    Well yes but not when I push it and I don't get battery light, it just randomly cuts out the comes back on, does your clocks reset ?
     
  14. brownycab

    brownycab Member

    Joined:
    Sep 11, 2011
    Messages:
    31
    Likes Received:
    1
    ive not really checked that one you mean like average MPG? and miles done and hours run etc? mines under warranty so if they find problem il let you know its going in friday
     
  15. Red_Stafford

    Red_Stafford Member

    Joined:
    Oct 8, 2010
    Messages:
    61
    Likes Received:
    0
    No just the clock
     
  16. brownycab

    brownycab Member

    Joined:
    Sep 11, 2011
    Messages:
    31
    Likes Received:
    1
    RED_stafford cars been in the garage and it was the alternator over charging the battery and electrics making the ECU turn off to save it from blowing up. so its alternator mate
     
  17. Red_Stafford

    Red_Stafford Member

    Joined:
    Oct 8, 2010
    Messages:
    61
    Likes Received:
    0
    So did u have to have the alternator replaced, that sounds expensive
     
  18. CHEZ

    CHEZ moderately amusing
    Supporter

    Joined:
    Jul 9, 2011
    Messages:
    3,923
    Likes Received:
    638
    alternator simple as!
     
  19. Red_Stafford

    Red_Stafford Member

    Joined:
    Oct 8, 2010
    Messages:
    61
    Likes Received:
    0
    May be simple to fit but expensive to buy ?
     
  20. CHEZ

    CHEZ moderately amusing
    Supporter

    Joined:
    Jul 9, 2011
    Messages:
    3,923
    Likes Received:
    638
    as always sadly mate!
    theres nowt cheap on these cars!
     
  21. AudiLeon

    AudiLeon Well-Known Member
    VCDS Map User

    Joined:
    Nov 24, 2009
    Messages:
    2,004
    Likes Received:
    79
    With alternator over charging, you usually get your airbag light glowing.
     
  22. Advert Guest Advertisement



    to hide this advert.
  23. Red_Stafford

    Red_Stafford Member

    Joined:
    Oct 8, 2010
    Messages:
    61
    Likes Received:
    0
    My airing light is always on but i was told about a year ago that's because there was a sensor out. The airing light came on a long time before the electrical problem
     
  24. marktdisport

    marktdisport Active Member

    Joined:
    Jul 14, 2011
    Messages:
    1,195
    Likes Received:
    15
    the plot thickens lol....... try fleabay search for cars breaking if you dont want new
     
  25. brownycab

    brownycab Member

    Joined:
    Sep 11, 2011
    Messages:
    31
    Likes Received:
    1
    alternators are about 90 quid on flea bay mate but prob could get a recon swap for you old one, it looks easy enough to do, just thought with it been under warranty let them pay n do it
     

Share This Page