DISCO4PERTH
Member Since: 20 Jun 2013
Location: perth
Posts: 16
  
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| charge fault-Help Please.... |
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Hello Guys just wondering if someone can give me some insight on what the issue with my disco 4 is. I have a MKII Disco 4 3.0TDI and am getting a charge fault on my dash. It turns on about 10 seconds after I turn the car on and my low beam xenons are not working (figuring due to this charge fault). I am getting about 13.8V on the battery when I check with a Voltmeter and am not sure if this is enough. A mate seems to think its an alternator issue but the car only has 52,000km on it. Can anyone give me an idea to what it is can be or if it is likely to be a faulty alternator?
Last edited by DISCO4PERTH on 5th Jul 2013 3:34 pm. Edited 1 time in total
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 20th Jun 2013 7:04 am |
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def90v8
Member Since: 22 Jan 2011
Location: kent
Posts: 55
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Req code read and charge system test but my guess is altonator faulty
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| 21st Jun 2013 7:00 am |
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DISCO4PERTH
Member Since: 20 Jun 2013
Location: perth
Posts: 16
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thanks for that do you know how many volts the alt should send on start up?
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| 21st Jun 2013 12:50 pm |
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Bodsy
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Member Since: 06 Nov 2006
Location: In the Clubhouse
Posts: 21361
 
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start up will prob be 13, but it should then rise to 14.5-15 if the battery needs it.
Try putting the ign on and the lights and blowers/radio etc for 10 minutes.
Then start her up, that should have drained enough out of the battery to force the alternator to push out more power.
But usually the alternator is the only reaon for the battery light to come on.  Bodsys Brake Bible
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| 21st Jun 2013 1:25 pm |
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def90v8
Member Since: 22 Jan 2011
Location: kent
Posts: 55
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U should see at least 14.+ no load and if u load it heated screens seats and fan blower u should see it drop then kick in and then rise up again at with engine @2000rpm
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| 21st Jun 2013 1:26 pm |
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DISCO4PERTH
Member Since: 20 Jun 2013
Location: perth
Posts: 16
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Guess what guys.. replaced the alternator and still getting charge fault. The low beam xenons turn on for a second and switch straight back off. I had airbags replaced and Im thinking maybe the guy has screwed something up in the dash panel....Would appreciate some ideas. Thanks
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| 5th Jul 2013 3:25 pm |
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DISCO4PERTH
Member Since: 20 Jun 2013
Location: perth
Posts: 16
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BTW the charge fault light comes on about 12 seconds after I start the car...
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| 5th Jul 2013 3:27 pm |
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GraemeS
Member Since: 17 Mar 2008
Location: NSW
Posts: 706
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def90v8 wrote:Req code read
Have you had the codes checked yet? Best to stop guessing until you have a starting point. Home of LLAMS, for LRs and Jeep GCs
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| 5th Jul 2013 10:18 pm |
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DISCO4PERTH
Member Since: 20 Jun 2013
Location: perth
Posts: 16
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Yes I took it to the dealer and they said it was the alternator..changed it and still have the same fault.
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| 6th Jul 2013 1:44 am |
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caverD3
Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922
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Who changed the air bags? and why? “There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.
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| 6th Jul 2013 2:30 am |
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DISCO4PERTH
Member Since: 20 Jun 2013
Location: perth
Posts: 16
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It had a front on collision I changed the bumper and the airbags, hood, grille and headlamps.
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| 6th Jul 2013 6:48 am |
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GraemeS
Member Since: 17 Mar 2008
Location: NSW
Posts: 706
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DISCO4PERTH wrote:Yes I took it to the dealer and they said it was the alternator..changed it and still have the same fault.
Not good - dealer guessing?
What happens if you start the engine with the lights off?
Edit: I'm suspecting a short circuit somewhere, perhaps with the headlight/parker wiring.
Another edit: I wonder if the load sense device on the battery negative terminal is working properly. Home of LLAMS, for LRs and Jeep GCs
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| 6th Jul 2013 7:03 am |
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caverD3
Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922
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The airbags means the whole dash out. Who did the work? “There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.
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| 6th Jul 2013 8:09 am |
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DISCO4PERTH
Member Since: 20 Jun 2013
Location: perth
Posts: 16
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I changed the load sense device when I changed the alternator suspecting it may be faulty. The airbags were changed by the panel shop and I was told that there were a few cables that were mended. If I start the engine with the Lights off I still get the fault about 12 seconds after the car starts. Also with the car off I still get the lights turn on and straight off also. I was suspecting the computer turns off the lights due to the charge fault but obviously with the car off thats not the case and the problem still occurs. Would a short in the headlight harness cause a charge fault? Regards
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| 6th Jul 2013 11:59 am |
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DISCO4PERTH
Member Since: 20 Jun 2013
Location: perth
Posts: 16
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Yes the whole dash was out when they changed the airbags
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| 6th Jul 2013 12:00 pm |
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