DSG flush required?
03-21-2018, 09:40 AM
#51
AudiWorld Senior Member
If a filter change isn't required in our cars, everything they did in the video under the car with the overfill/temperature-measure/drain-excess is basically the same as what will be required on our cars.
The video at least gives you a good idea of what's involved regarding the fluid change.
CFM
The video at least gives you a good idea of what's involved regarding the fluid change.
CFM
03-21-2018, 10:09 AM
#52
AudiWorld Senior Member
I was under the impression as well that you have to go into the system to depressurize the system before opening it up to drain the fluid. I don't think all DSG models have the same service steps, which is important to note. Another reason I got AudiCare....
03-21-2018, 05:23 PM
#53
AudiWorld Member
I see people saying $500 is not a lot of money, I've seen the price range from the upwards of $700! It's insane. You can buy all the tools and materials you need to do it for less than $300, and then be able to use all those tools for other jobs that the dealer would charge an arm and a leg for!
If I can do it you can too.. A friend and I did it and filmed doing a fluid service in 3 hours. You just gotta take a deep breath and look at what you're really paying for.
Here's my 8 minute DIY video:
https://www.youtube.com/watch?v=3UtSTZqW6Wc
I have listed the tools I used and recommended alternatives. The OBDEleven scan tool is not something I have yet, but looks like it would do the trick for $80. (And you can definitely forego the pump tool kit for $80)
If I can do it you can too.. A friend and I did it and filmed doing a fluid service in 3 hours. You just gotta take a deep breath and look at what you're really paying for.
Here's my 8 minute DIY video:
https://www.youtube.com/watch?v=3UtSTZqW6Wc
I have listed the tools I used and recommended alternatives. The OBDEleven scan tool is not something I have yet, but looks like it would do the trick for $80. (And you can definitely forego the pump tool kit for $80)
03-21-2018, 05:33 PM
#54
AudiWorld Member
There are two oil circuits in the tranny, the DSG side for the mechatronics and hydraulics controls, and the mechanical side that bathes in MTF. The mechanical side has a pressure accumulator that would need to be depressurized in order to replace the MTF. I'm not sure what the service schedule is for the mechanical side.
03-23-2018, 03:43 AM
#55
AudiWorld Senior Member
There are two oil circuits in the tranny, the DSG side for the mechatronics and hydraulics controls, and the mechanical side that bathes in MTF. The mechanical side has a pressure accumulator that would need to be depressurized in order to replace the MTF. I'm not sure what the service schedule is for the mechanical side.
Breadbooze, you seems know this DSG well. So which one (DSG side or mechanical side) are we talking about to be changed at 40,000 miles according to Audi's schedule? Thanks!
03-23-2018, 09:52 PM
#56
AudiWorld Member
The DSG side is 40k, the mechanical side isn't published but I assume it to be 100k. In the process of figuring out how to do the DSG fluid change I changed out the MTF as well. I understand now why there is no filter on the DSG side- it's all hydraulics and there really isn't any exposure to gears or parts that wear down over time.
03-24-2018, 10:28 AM
#57
AudiWorld Senior Member
The DSG side is 40k, the mechanical side isn't published but I assume it to be 100k. In the process of figuring out how to do the DSG fluid change I changed out the MTF as well. I understand now why there is no filter on the DSG side- it's all hydraulics and there really isn't any exposure to gears or parts that wear down over time.
I assume you used same fluid for both compartments. Did you use factory reader to de-pressurize the MTF or you have a trick to do it yourself? A bit detail or better yet a step by step tutorial would be great. I have been doing auto maintenance even including timing belts for all my cars for years. This is my first European car though so a bit uncertain. Thanks in advance!
03-24-2018, 10:39 AM
#58
AudiWorld Member
Thank you for the info, breadbooze!
I assume you used same fluid for both compartments. Did you use factory reader to de-pressurize the MTF or you have a trick to do it yourself? A bit detail or better yet a step by step tutorial would be great. I have been doing auto maintenance even including timing belts for all my cars for years. This is my first European car though so a bit uncertain. Thanks in advance!
I assume you used same fluid for both compartments. Did you use factory reader to de-pressurize the MTF or you have a trick to do it yourself? A bit detail or better yet a step by step tutorial would be great. I have been doing auto maintenance even including timing belts for all my cars for years. This is my first European car though so a bit uncertain. Thanks in advance!
03-25-2018, 07:22 AM
#59
AudiWorld Member
Thank you for the info, breadbooze!
I assume you used same fluid for both compartments. Did you use factory reader to de-pressurize the MTF or you have a trick to do it yourself? A bit detail or better yet a step by step tutorial would be great. I have been doing auto maintenance even including timing belts for all my cars for years. This is my first European car though so a bit uncertain. Thanks in advance!
I assume you used same fluid for both compartments. Did you use factory reader to de-pressurize the MTF or you have a trick to do it yourself? A bit detail or better yet a step by step tutorial would be great. I have been doing auto maintenance even including timing belts for all my cars for years. This is my first European car though so a bit uncertain. Thanks in advance!
The process for the MTF change involved sucking it out from the side fill port (I got about 3.5L out) and refilling until it leaks out. I couldn't figure out how to depressurize the the accumulator using obd11 so I rowed through the gears with a "dry" gearbox and monitored the oil pressure until it dropped. It's probably not the ideal way of doing it, I'm sure there's a way to turn off the oil pressure pump and equalize pressure that way. You'll get a few faults in the transmission module doing it that way, they'll go away after the fluid is replaced and faults cleared.
03-25-2018, 06:37 PM
#60
AudiWorld Member
While DSG fluid can be used for both, Audi put in a GL-4 75W gear oil (that's what the service tech thinks it is), or part number G052549A2 if you want what the factory used. I put up a set by step for the DSG side in the allroad forum here- https://www.audiworld.com/forums/a4-...hange-2945427/
The process for the MTF change involved sucking it out from the side fill port (I got about 3.5L out) and refilling until it leaks out. I couldn't figure out how to depressurize the the accumulator using obd11 so I rowed through the gears with a "dry" gearbox and monitored the oil pressure until it dropped. It's probably not the ideal way of doing it, I'm sure there's a way to turn off the oil pressure pump and equalize pressure that way. You'll get a few faults in the transmission module doing it that way, they'll go away after the fluid is replaced and faults cleared.
The process for the MTF change involved sucking it out from the side fill port (I got about 3.5L out) and refilling until it leaks out. I couldn't figure out how to depressurize the the accumulator using obd11 so I rowed through the gears with a "dry" gearbox and monitored the oil pressure until it dropped. It's probably not the ideal way of doing it, I'm sure there's a way to turn off the oil pressure pump and equalize pressure that way. You'll get a few faults in the transmission module doing it that way, they'll go away after the fluid is replaced and faults cleared.
Does anyone know if this is the case? Additionally is this DSG the OB5/DL501 model?
Last edited by dbias; 03-25-2018 at 06:45 PM.