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D3 - Transmission Gearboxes, diffs, drive shafts. |
View Poll Results: What's your ATF change experience? | |||
Never changed it - it's "sealed for life", silly! (a self-fulfilling prophecy) | 6 | 27.27% | |
Changed it before 100k miles w/no ill effect | 10 | 45.45% | |
Changed it before 100k, but had transmission problems afterward | 0 | 0% | |
Changed it after 100k, no ill effect | 4 | 18.18% | |
Changed it after 100k, problems ensued | 2 | 9.09% | |
Voters: 22. You may not vote on this poll |
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Thread Tools | Display Modes |
#1
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To Change or Not to Change (ATF): What's your experience?
So, I have some imperfect behavio(u)r on my 150k-mile A8L. Sort of flares/slips a tiny bit, mainly when cold. I do have some codes, below, (brake light switch; and ABS, which I think is related to the BLS) which I will clear to see if they recur, and replace the BLS, but what is everyones' experience with changing the ATF? Is there a way to determine the current SW version in the trans, short of the $tealer $ervice dep't? Can I tell which (blue or yellow) fluid is in there or could it be brown enough to obscure its original colo(u)r? TIA for any empirical evidence!
-Tom Here are the most likely codes; I'll posted the whole scan in test forum <link> . Address 02: Auto Trans Labels: 09E-927-156.lbl Part No SW: 4E0 910 156 E HW: 09E 927 156 A Component: AG6 09E 4,2L5V USA 0060 Coding: 0000002 Shop #: WSC 02353 785 00200 VCID: 24475AF8E7C0DE3 1 Fault Found: 17087 - Brake Switch (F) P0703 - 000 - Electrical Malfunction - Intermittent Freeze Frame: RPM: 640 /min RPM: 192 /min RPM: 32 /min (no units): 7.0 (no units): 34.0 Temperature: 70.0°C T.B. Angle: 0.0° Voltage: 13.92 V ------------------------------------------------------------------------------- Address 03: ABS Brakes Labels: 4E0-910-517.lbl Part No SW: 4E0 910 517 A HW: 4E0 614 517 E Component: ESP 5.7 allrad H29 0420 Coding: 0007597 Shop #: WSC 03419 000 00000 VCID: 214953ECF8D2CBB 2 Faults Found: 00526 - Brake Light Switch-F 011 - Open Circuit - Intermittent 00526 - Brake Light Switch-F 008 - Implausible Signal - Intermittent Last edited by aTOMic; 9th March 2012 at 01:35 AM. |
#2
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The F-125 switch issue is documented on Audipages HERE and Adrian_E had the issue on his car HERE - take a look.
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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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I also changed ATF at 60,000miles and again at 120,000 miles with no ill effect. (Vote above only allowed me to select one ATF change.)
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#4
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That fault code is for brake switch not F125. It is normal to have it. If you press brake pedal after switching ignition on and before rumning scan it will not appear.
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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 |
#5
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If your box is at the start of problems, then go for it and see how it behaves. I've had both my D2 and 'previous' D3 done, and it's kept them trouble free.
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2010 Jag XF 3.0D Portfolio S I know.. I know.. |
#6
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Sealed for life was something the manufacturers came up with in the late 90s. Before that torque converters had a drain hole to allow all the contaminated oil to be drained out. During 2000-2005 they still insisted that the boxes were sealed for life, but suddenly around 2005 they changed their minds and put the ATF on the service schedule as a one off change at around 40k. The reason for this was they were getting too many warranty claims for faulty boxes, a much higher percentage than before the sealed for life box was 'invented' and further investigation revealed that a single change at 40k removed all the crap that was inside either due to manufacturers leaving a tiny piece of swarf in or through normal wear and tear.
I personally like to change the ATF and filter, then every couple of years change the ATF only, not a big job once you have done it a few times, and from what I've done they all seem to be of a similar system and roughly the same procedure. I've read that some people change the ATF and then experience problems, but I would be asking if there were any problems before the oil change. The oil through time becomes contaminated and the filter choked, I can see no good reason to leave it pumping around inside the box, best change it and keep it fresh
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. Nite Blue 3.0L SE Quattro |
#7
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Quote:
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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 |
#8
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I had similar behaviour from my cold box and had brake switch errors - also it sometimes seemed to be in the wrong gear when exiting a roundabout.
Changed the switch - £10 part - and 20 mins (by the brake pedal) and all seems ok now.
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2003 D3 A8 4.2 Atlas Grey - Factory: Adaptive lights with coming home function, 19" wheels, Solar Sunroof, Bose, Nav, TV, Paddle shift sports wheel, sports suspension, sports seats, rear seats with electric lumbar adjustment, heated seats and climate all round, ski hatch, int light pack, auto dip/fold mirrors, voice command, cordless phone, wooden gear knob, towbar, power boot lid After: LPG, AMI with HDD Pending: DVB-T Tuner & fixing niggles |
#9
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Thanks for the replies. I have the switch ordered, will keep you posted
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I'm in love with a car. 2004 4.2L Petrol A8L Sage Green/Black (one of only five D3s thus colored sold in the US) |
#10
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The switch makes a huge amount of difference on the ZF6HP. Especially at low RPMs.
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