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Audi A3 2007 - Battery drain 600ma #

Posted by John Hall on September 24, 2015, 9:42 pm

Year of Manufacture *: 2007

I have the above with a 600ma drain from the battery, I would assume this is too much for this vehicle. Does anyone have any sensible battery drain readings for a similar vehicle please ?

About to start hunting the drain but looking like one of the networks is not going to sleep !

Any help on correct level of battery drain would be helpful.

Re: Audi A3 - Battery Drain

Posted by Ed Parry User icon on September 24, 2015, 11:04 pm, in reply to "Audi A3 - Battery Drain"
Edward Parry

I would expect around 50ma drain after its gone to sleep.
Have you checked for fault codes ?

Re: Audi A3 - Battery Drain

Posted by John hall User icon on September 25, 2015, 6:53 am, in reply to "Re: Audi A3 - Battery Drain"

Ok thanks, I've done a global scan, various stored codes but all consistent with pulling fuses etc. Cleared all and returned to customer over weekend then will attach it again. If I do a global scan after 5 mins ign off some,modules still awake,, radio, phone, sub woofer,instrument and one of the networks under live data in network module is showing as active.

Re: Audi A3 - Battery Drain

Posted by aidan birley User icon on September 25, 2015, 7:56 am, in reply to "Re: Audi A3 - Battery Drain"
Aidan Birley

Hi John

Checking voltage drop across fuses is the recommended method of testing modern systems as it avoids inducing fault codes and waking up systems.

http://www.motor-talk.de/forum/aktion/Attachment.html?attachmentId=721311

http://info.powerprobe.com/fusechartsdownload

You may need longer than 5 mins to shut down (go to sleep) and I would suspect a global scan will wake some systems up.

Cheers Aidan

Re: Audi A3 - Battery Drain

Posted by andyhyoung User icon on September 25, 2015, 8:14 am, in reply to "Re: Audi A3 - Battery Drain"
Andrew Young

Is the car fitted with factory bluetooth phone connectivity?

Re: Audi A3 - Battery Drain

Posted by Ian Baxter User icon on September 25, 2015, 10:41 am, in reply to "Re: Audi A3 - Battery Drain"
Ian Baxter

Hello John,
There is a good write up in the archive/forum search dated March 20th 2015.

I don't know how to link it though

HTH Ian

Re: Audi A3 - Battery Drain

Posted by Matt Seabrook User icon on September 25, 2015, 1:10 pm, in reply to "Re: Audi A3 - Battery Drain"
Matt Seabrook

I have just had a MKV 2005 Golf in with a 650mA drain on the battery. It was the drivers door modal not shutting down due to a broken CAN wire in the door shut. Took a little finding as you had to pull the rubber bellows right back and through the door frame to be able to see it.

When it was fixed it had 17mA drain on the battery.

Re: Audi A3 - Battery Drain

Posted by aidan birley User icon on September 25, 2015, 1:18 pm, in reply to "Re: Audi A3 - Battery Drain"
Aidan Birley

Matt

Did that log a fault code to give you a clue ?

Cheers Aidan

Re: Audi A3 - Battery Drain

Posted by Matt Seabrook User icon on September 26, 2015, 8:54 am, in reply to "Re: Audi A3 - Battery Drain"
Matt Seabrook

Yes it logged a fault code. Although there where loads of fault codes logged. As I remember both front doors logged can faults along with lots of other modules so it wasn't immediately apparent what was going on. All the functions worked on the drivers door, window switches and central locking operation worked as you would expect for the other doors from the drivers operation. Which is why it had me going for a bit. It was when I scoped the CAN wires at the module I found the fault. With the module disconnected I only had signal on one cable. I was a little annoyed that I hadn't found the issue quicker but that's diagnostics for you sometimes.

Re: Audi A3 - Battery Drain

Posted by Kevin Apps User icon on September 26, 2015, 8:58 am, in reply to "Re: Audi A3 - Battery Drain"
Kevin Apps

John

Link to thread mentioned in Ian's post.

http://members4.boardhost.com/ukautotalk/msg/1426854864.html

Kev.

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