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DIY - automatic transmission ZF 6HP19-21 solenoids replacement
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11-09-2015, 07:01 PM | #1 |
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DIY - automatic transmission ZF 6HP19-21 solenoids replacement
DIY automatic transmission solenoids replacement (ZF 6HP19-21 applications)
Technically everything is described here: a) valve body replacement http://www.thectsc.com/images/pdf/th...eplacement.pdf b) solenoids replacement http://www.thectsc.com/images/pdf/So...structions.pdf But for those who cares about details: 1) Let the car to cool down a bit if it's hot. It is always better to have cold transmission oil on your head and on your shoulders than hot. 2) Meanwhile reset your transmission adaptations by means of DIS or some other software e.g ISTA. And yes, it says to reset before solenoid replacement - not after!, though I don't see any fundamental difference. 3) Put the car into parking mode and lift the car. Technically it's possible to do the job with the car on jack stands but I used normal car lift(I'm not a masochist ) 4) Remove transmission oil pan shield 5) Unscrew drain plug and drain the oil. It's about 6-7 liters. You can catch the oil and reuse it if you recently did transmission oil change and that didn't help you (lots of people start with tranny oil change e.g. me ) 5) Unscrew oil pan/filter and remove it. Be careful cause it's gonna be a little bit more oil inside the pan. And prepare some pan under the transmission to catch dripping fluid from your mechatronics valve body. Wait a little bit until fluid stops dripping or dripping very slowly. 6) Then you'll see this picture. In red circles bolts that you need to unscrew in order to remove mechatronic unit. But before that you have to do this: 7) Unlock and disconnect the vehicle connector from the transmission (See picture) Pull the sealing sleeve locking mechanism to the unlocked position. The locking tab is located on the bottom of the mechatronic below the sealing sleeve 8) NOw you are ready to unscrew all 10 bolts that hold mechatronics unit. See picture. Unscrew all of them and leave 2 (one from each side to just to hold the unit) Slightly release these 2 bolts so they still holding the unit and be ready to catch dripping fluid. It's gonna be 1-2 more liters Wait until it's dripping ocasionally. 9) Now you will need helper. cause you need someone to hold the unit while you are releasing those 2 bolts. Cause once you release them the unit's gonna fall down. The unit itself can be hot so it's better to use some lint free clothes to hold the valve body. Once valve body is released See instructions on how to replace solenoids. http://www.thectsc.com/images/pdf/So...structions.pdf Sorry guys it's a first draft. Will edit later to make more clear and to include your proposals. Last edited by snayko; 11-09-2015 at 07:21 PM.. |
11-11-2015, 01:09 PM | #2 |
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Why did you change the solenoids?
Did you notice any improvements by doing so? I've been thinking about replacing all of mine along with the seal in your attached picture. And install the Sonnax Zip Kit at the same time. My shifts are sloppy and inconsistent.
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11-13-2015, 03:21 PM | #3 |
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I had a hard jolt after each stop. When you tranny was shifting from 2and to 1st. I was able to reproduce that even in manual mode. So shifts 2-1 and 1-2 were terrible, felt like a truck crashed into your trunk each time when you stop
First I thought that it was my GUIBO(Driveshaft flex disk) but that wasn't the case. Yes, the problem is gone. Shifting in general is smoother a bit I would say, but it's always the case after adaptations reset |
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11-10-2017, 06:13 AM | #4 | |
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Anyways, thanks for this write-up bro, I'm tackling this job next weekend..!
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11-10-2017, 02:25 PM | #5 |
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11-14-2017, 08:37 AM | #7 | |
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11-14-2017, 09:34 PM | #8 | ||
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The car is running solid since then.
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11-15-2017, 06:13 AM | #9 | |||
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03-20-2018, 01:22 AM | #10 | |
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03-20-2018, 08:01 PM | #12 | ||
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03-28-2018, 08:52 PM | #13 |
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Is this relatively easy? My car is acting funny, when I started the car and shifted into R it would not move, so I switched it into D and it still would not move. I put it in P and shut the car down. Now the car won't start and the key fob is stuck. I ran my scanner and came back with the following code:
P0752 Shift Solenoid A Stuck on Circuit. So I'm assuming I need to replace the Shift Solenoid? Is this something I can do or should I have the dealer do it? I'm fairly mechanically inclined. This is on a 2007 328xi Sports Wagon. Thanks for the guide! |
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03-29-2018, 07:34 PM | #14 | |
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For the 328, I believe that transmission is a GM manufacturer and not a ZF. I have no idea what the GM transmission mechatronic looks like. The dealer won't touch the mechatronic. Though, I believe they would replace the transmission.
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03-29-2018, 10:26 PM | #15 | |
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I think you just guided me in the right direction. I found this post after researching my issues: https://blog.bavauto.com/16677/bmw-a...2-e83-ga6l45r/ My fear is that if I take it to the dealer they are going to tell me to replace the tranny when in all reality its just the selector rod. What are your thoughts on this? Could I possible get the P0752 Shift Solonod A error because the Selector Valve Rod is broken? |
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03-31-2018, 01:16 PM | #16 | ||
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11-06-2018, 09:42 PM | #18 |
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Would a bad solenoid in the mechatronics unit throw a code? I feel like i have this exact problem that nobody can seem to figure out but no SES light.
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11-06-2018, 10:38 PM | #19 | |
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11-07-2018, 11:28 AM | #20 |
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DCT is a different beast
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05-04-2019, 09:35 PM | #21 |
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So you’re supposed to reset the adaptation settings before removing the solenoids right? So what are you supposed to do if they were cleared after??
After I replaced the solenoids and seals, I realized I didn’t clear the adaptation settings! Has anyone had this issue? If so, is there a procedure to fix this and does anyone have any recommendations? |
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05-08-2019, 09:33 PM | #22 | |
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Cheers!
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