#1
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Draining battery
Long time no see guys!
Have a little pickle going on now. Here the 11th now the car suddenly drained totally. I found out this when i was going to work on monday morning (ofc). I hooked on the battery charger and took my spare car to work and used it for the reminder of the week with the A8L still charinging. Tried to start it this saturday and all seemed to bee good, drove it for a couple miles, let it stand still for 2-3 hours and took another drive, all ok. Put the car to rest at 10pm or something saturday night, and 2am saturday/sunday night the alarm started going of before it stoped totally again due to flat battery. Hooked on the carger again and did a RMA on the battery (Sĝnnak 95ah AGM battery) and changed it yesterday at work 10am, did a battery coding + test. All good, and i drove the car home from work about 6pm and when i got up and tried to start it again today 6.45am ish it was totally dead again. So something draining like crasy. Here's a full system search dump from when i changed the battery yesterday, noting that screams issues from what i can see! It's a 2010 A8L 3.0 Quattro btw! Quote:
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2010 D3 A8L 3.0 TDI QUATTRO BI-Xenon Headlights, Keyless, Bang&Olufsen, DTV, DAB, Rear Camera, BT, TPMS, Soft Close, Auto Boot, AMI, 4 Zone AC, Home Link, All Electric Blinds, Ski Hatch, Black Extended Leather, Seat Memory on Both Sides, Heated / Cooled Sport Front Seats, Electrically Adjustable Rear & Heated Rear Seats Alacantra roofliner, Exterior LED Package, Lane Assist, Adaptive Cruise Control & Heated Steeringwheel ++. |
#2
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You really need to clear all codes (global clear plus go into each module and physically clear as well) and then scan again as a lot of these codes are older codes. Once you have done that then re-post the fault codes fresh
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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 |
#3
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Quote:
The only things who were left after i deleted them yesterday was the left parking brake motor (that's in is inbound, been defect a couple month's). And a couple others that should have anything to do with the drain. But anyway's i can't see anything it that big list from the other day that indicates a failure right before the different systems started putting low voltage errors.
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2010 D3 A8L 3.0 TDI QUATTRO BI-Xenon Headlights, Keyless, Bang&Olufsen, DTV, DAB, Rear Camera, BT, TPMS, Soft Close, Auto Boot, AMI, 4 Zone AC, Home Link, All Electric Blinds, Ski Hatch, Black Extended Leather, Seat Memory on Both Sides, Heated / Cooled Sport Front Seats, Electrically Adjustable Rear & Heated Rear Seats Alacantra roofliner, Exterior LED Package, Lane Assist, Adaptive Cruise Control & Heated Steeringwheel ++. |
#4
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Ok, so update time. Haven't had time to f-around with the car before now. And i just swaped out the battery for a fully charged one and coded it.
I've had the car in the workshop for about 3 hours now with the ignition off, doors closed and truck shut (lights off). And i see that the ligthing in the shifter console, and all the backlighting in the roof panels are on (including the little white "spot" diodes in the rearview mirror). Have anyone experienced this before?
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2010 D3 A8L 3.0 TDI QUATTRO BI-Xenon Headlights, Keyless, Bang&Olufsen, DTV, DAB, Rear Camera, BT, TPMS, Soft Close, Auto Boot, AMI, 4 Zone AC, Home Link, All Electric Blinds, Ski Hatch, Black Extended Leather, Seat Memory on Both Sides, Heated / Cooled Sport Front Seats, Electrically Adjustable Rear & Heated Rear Seats Alacantra roofliner, Exterior LED Package, Lane Assist, Adaptive Cruise Control & Heated Steeringwheel ++. |
#5
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Done a complete readout, deleted with CAN command, and then went in to each system and manually deleted what was left. Then did a new search, this is what i'm left with now (the parking break motor i'm going to change today, and tyre pressure is because of a leaky valve so i have those sorted) and i'm pretty sure the "00778 - Steering Angle Sensor (G85)" is because i haven't driven the car after i deleted the other codes / ie. not initialized yet.
Quote:
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2010 D3 A8L 3.0 TDI QUATTRO BI-Xenon Headlights, Keyless, Bang&Olufsen, DTV, DAB, Rear Camera, BT, TPMS, Soft Close, Auto Boot, AMI, 4 Zone AC, Home Link, All Electric Blinds, Ski Hatch, Black Extended Leather, Seat Memory on Both Sides, Heated / Cooled Sport Front Seats, Electrically Adjustable Rear & Heated Rear Seats Alacantra roofliner, Exterior LED Package, Lane Assist, Adaptive Cruise Control & Heated Steeringwheel ++. Last edited by Exerqtor; 28th November 2018 at 11:44 AM. |
#6
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The rear footwell heaters apparently are a common fault. As for the reversing camera fault, it seems tied into the steering angle sensor, so hopefully that will also disappear after you drive it.
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2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts Sold! 2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights My DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds |
#7
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Yup the rear footwell heater's is just something i totally ignore tbh
And i guess/hope that all faultcodes that i have there will go away when i change the parking brake motor and start to drive. The problem ist still there in regards to draining the flipping battery though
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2010 D3 A8L 3.0 TDI QUATTRO BI-Xenon Headlights, Keyless, Bang&Olufsen, DTV, DAB, Rear Camera, BT, TPMS, Soft Close, Auto Boot, AMI, 4 Zone AC, Home Link, All Electric Blinds, Ski Hatch, Black Extended Leather, Seat Memory on Both Sides, Heated / Cooled Sport Front Seats, Electrically Adjustable Rear & Heated Rear Seats Alacantra roofliner, Exterior LED Package, Lane Assist, Adaptive Cruise Control & Heated Steeringwheel ++. |
#8
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The battery coding is showing null values at the start, but I would change them to zero's (coding is in HEX, therefore 30)
Code:
Current: 000001393135313035434654553330373338323831313138 Try: 303030393135313035434654553330373338323831313138 That may solve nothing, just a but of house keeping making sure the BEM is happy and knows the capacity. The fault code logged today, 2018.11.28, in the radar shows a voltage of 11.4v, which is too low. Have you charged it since then? Was this the old battery? What's with the fault in both analogue and digital radios of can not be reached? Is the car kept outside? The keyless door lock buttons can cause the car to keep waking up through water ingress or condense at the dew point.
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Matt 2004 A8 3.7q, 1998 A4 2.8q, 1994 Coupe 2.8q SORN, |
#9
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Quote:
The battery has been coded with a Exide battery coder to be a AGM 105 battery to, so i guess it should be ok? The 11,4v is because i have been derping around with the VCDS (with charger on?). But somethings drawing it. Regarding the radio fault codes is because i tryed to put in a 2013 Q5 radio unit to get DAB+, well over a year ago but it didn't work and i haven't gotten around fixing it. But the battery drain problem happened so long after i doubt that's the issue since it's been so long without any problems? And yes the car is kept outside, but all the keyless buttons ( i'f you mean the ones that's on the chrome trim) all work? And no fault codes on them either? I'm not saying there not the problem with what your mentioning ofc. just saying what i know atm :/ .
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2010 D3 A8L 3.0 TDI QUATTRO BI-Xenon Headlights, Keyless, Bang&Olufsen, DTV, DAB, Rear Camera, BT, TPMS, Soft Close, Auto Boot, AMI, 4 Zone AC, Home Link, All Electric Blinds, Ski Hatch, Black Extended Leather, Seat Memory on Both Sides, Heated / Cooled Sport Front Seats, Electrically Adjustable Rear & Heated Rear Seats Alacantra roofliner, Exterior LED Package, Lane Assist, Adaptive Cruise Control & Heated Steeringwheel ++. Last edited by Exerqtor; 28th November 2018 at 02:32 PM. |
#10
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Swapped out the faulty parking brake motor yesterday, and redid the coding to 303030etc, drove the car home and had it standing over the night with charger on so that i can proceed with the car after work today.
Today i'm planing to update the MMI and navigation to see if that might help (ditch atempt, but it's needed anyways). One thing that i find a little strange is that the clock in the instrument cluster still haven't adjusted itself? Even though it's had power (ignition off ofc) since 7pm ish yesterday and until now
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2010 D3 A8L 3.0 TDI QUATTRO BI-Xenon Headlights, Keyless, Bang&Olufsen, DTV, DAB, Rear Camera, BT, TPMS, Soft Close, Auto Boot, AMI, 4 Zone AC, Home Link, All Electric Blinds, Ski Hatch, Black Extended Leather, Seat Memory on Both Sides, Heated / Cooled Sport Front Seats, Electrically Adjustable Rear & Heated Rear Seats Alacantra roofliner, Exterior LED Package, Lane Assist, Adaptive Cruise Control & Heated Steeringwheel ++. |
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