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| D3 - Interior Electrics Airbags, Sensors, climate modules, instrument clusters, switches etc |
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Thread Tools | Display Modes |
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#41
12th October 2015, 10:39 AM
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Well just spent some money in Maplin getting some new test leads and we have a current draw of 0.46 amps after the car sleeps. Just waiting for it to go to sleep again before I pull the wire on the alarm siren to see if it drops.
Lucky for me my DMM has a 20A rating for DC amps as it draws more than 12 when you connect the battery for a short period before dropping back to 8 and then 0.46.
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Manny 2004 A4 1.8T Sport Cabriolet, 89K Miles Past 2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly with retrofit AMI and DVB-T in place of Analogue 2003 Volvo S60 D5 SE Manual, 197K miles. 2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles Last edited by mannyo; 12th October 2015 at 10:41 AM. 
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#42
12th October 2015, 10:59 AM
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Well, I've had to abort the playing around. I've run the battery right down waiting for the car to sleep. I did not even get to the full 15mins twice before things got shutdown.
However once the battery manager has killed everything because the battery is low the current flow drops right back to almost nothing, between 0.03A and 0.09A. I think I need a new battery, this one despite the car being used today is just not right. Halfords have a 110ah HB020 Yuasa Silver battery listed as compatible, but its £159. May just buy it anyway, so I can at least continue testing to check the alarm siren, still not got that far.
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Manny 2004 A4 1.8T Sport Cabriolet, 89K Miles Past 2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly with retrofit AMI and DVB-T in place of Analogue 2003 Volvo S60 D5 SE Manual, 197K miles. 2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles Last edited by mannyo; 12th October 2015 at 11:04 AM.
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#43
12th October 2015, 11:07 AM
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Quote:
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Manny 2004 A4 1.8T Sport Cabriolet, 89K Miles Past 2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly with retrofit AMI and DVB-T in place of Analogue 2003 Volvo S60 D5 SE Manual, 197K miles. 2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles Last edited by mannyo; 12th October 2015 at 11:09 AM.
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#44
12th October 2015, 11:27 AM
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Quote:
http://www.eurocarparts.com/ecp/p/ac...008&0&cc5_1026 Or the Varta 110Ah is low as £95 online, ebay etc.
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Matt 2004 A8 3.7q, 1998 A4 2.8q, 1994 Coupe 2.8q SORN,
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#45
12th October 2015, 11:33 AM
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I can lend you conductance battery tester for the cost of postage if you want to test old battery before buying new or I can test it for you if you coming in Northampton / Kettering direction.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure
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#46
12th October 2015, 06:56 PM
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Quote:
I am still determined to locate the source of that 0.4A drain, although I suspect the car may have always had it based on the fact the battery had always dropped to 50% if left for 4 or 5 days. I guess that over a period of time the battery has deteriorated and I guess that in 18 months I'll be going through the same thing.
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Manny 2004 A4 1.8T Sport Cabriolet, 89K Miles Past 2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly with retrofit AMI and DVB-T in place of Analogue 2003 Volvo S60 D5 SE Manual, 197K miles. 2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles
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#47
13th October 2015, 08:37 AM
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Very puzzling, car was ok last night. Battery at 100 this morning and after car sleeps current draw is tiny. Alarm is still connected.
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Manny 2004 A4 1.8T Sport Cabriolet, 89K Miles Past 2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly with retrofit AMI and DVB-T in place of Analogue 2003 Volvo S60 D5 SE Manual, 197K miles. 2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles
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#48
13th October 2015, 08:45 AM
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If the power management module is playing up and you code a new battery in then it will normally work fine for quite a while before playing up again so as I have said before it may be that your battery management module is intermittently playing up. if all is well for a while now and then it starts to do it again then I would replace the BMM.
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Confidence is the feeling you have before you know better . . . .  Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble  Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs
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#49
13th October 2015, 09:11 AM
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The D3 electrics are certainly a challenge.
There are so many different types of BMM, with the negative terminal in different places. I'd also need to try and get the newest one possible to try and avoid getting a used duff one, or a used one with the old firmware that would need updating. One other possibility, yesterday before I aborted the current test due to low battery I was getting ready to disconnect the alarm siren. I had the siren unbolted, and it was laying face up with the power connection visible to disconnect for around 15mins. Since putting it all back together everything seems to have been fine. I keep going round the same circle, battery, alarm siren, heater resistor, BMM. Could be any of these acting up. This is the current BMM
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Manny 2004 A4 1.8T Sport Cabriolet, 89K Miles Past 2004 D3 A8 3.7 Quattro, Xenon, Bose, Blinds, Solar Sunroof, TV, ACC, phone and almost every option. 168K miles rising slowly with retrofit AMI and DVB-T in place of Analogue 2003 Volvo S60 D5 SE Manual, 197K miles. 2001 D2 A8 3.7 QS, Bi-Xenon, Bose, Blinds, Electric Everything, retrofitted RNS-D, 191K Miles Last edited by mannyo; 13th October 2015 at 09:22 AM.
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#50
13th October 2015, 09:32 AM
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I would hold off buying a new battery for now. Certainly pick up a replacement BMM. This newer revision from ebay seems good value, assuming it's undamaged, the seller will accept returns.
http://www.ebay.co.uk/itm/161819882804 It is a different shape to our existing modules, but the top left mounting is in the same location so I hope there's no complications with fitting. One thing I noticed from your VCDS scan is that the Shop# is different on your BMM module compared to the majority of your other modules. So maybe the previous owner had problems and had it changed.
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Matt 2004 A8 3.7q, 1998 A4 2.8q, 1994 Coupe 2.8q SORN,
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Linear Mode
