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2010 2011 BMW 5 Series Forum F10 DIY: 8HP Transmission Fluid Service |
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03-08-2020, 12:29 AM | #1 |
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DIY: 8HP Transmission Fluid Service
Edit 2/23/2024: Updated instructions slightly to reflect ZF's instructions of not letting wheels spin. I had forgotten to update that step of the instructions when shifting into the various gears, my apologies. Also, if you intend on doing the Sonnax Zip Kit later down the road, now is a good time to take note of the separator plate code. See attached pictures for OE Valve Body Code location.
Repeat after me: I will not undo the drain plug until I loosen the fill plug. I will not undo the drain bolt until I loosen the fill bolt Now that I got that out of the way, onto the guide! Necessary tools:
Nice to have tools:
Pan and filter kit, includes replacement fill plug and pan bolts ATF fluid People have reported success with aftermarket ATF, but I personally recommend OEM as this isn't a frequent service and I'd rather not risk my transmission. Note: All images have a blue arrow pointing towards the front of the car, to help you orient yourselves.
For those who do not have ISTA+, you need some way of reading the transmission oil temperature reliably, such as via BimmerLink or OBD Fusion. This is what ISTA tells you to do:
I used about 4.5 liters of ATF, the car holds 7. You won't get everything out, and I wouldn't try to as that's a very involved process, requiring you to empty out the transmission cooler lines and torque converter. While doing this, if you're RWD I'd actually replace the mechatronic sealing sleeve, as that sometimes leaks. Need to do this with the transmission drained, so this is a good time for it. For AWD, there's not enough space without dropping the transfer case, so I'd just poke around and make sure it's not leaking, and if it's not, leave it. Pull out the sleeve, use some ATF to lube up the new one's o-rings, and push it in. It only goes in one way and one orientation, so if it's not going in, rotate it until it does. Push the plug back in and rotate it towards you (clockwise) until it solidly clicks. Twist the tab towards the top of the car (counter clockwise), it'll unscrew itself. Pop it off, needs a bit of force. You can see just how tight it is for xDrive owners, that big black mass to the right of the picture is the transfer case, the left is the transmission pan. Note: Some video guides say to take an infrared laser thermometer to measure the pan temperature and go off of that. It will NOT work. The pan heats up significantly slower than the fluid will, so by the time the pan is up to temp you'll likely have overshot the fluid temp.
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Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets ISTA VM Setup/Tutorial Last edited by Unspec; 02-23-2024 at 02:35 AM.. Reason: Changed title of post |
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03-09-2020, 05:07 PM | #3 |
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Sorry, fixed the images. Not sure why they didn't upload correctly.
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ChiltiCoatl891935.50 |
03-09-2020, 06:06 PM | #4 |
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Sure validates my decision to let my dealer do it!!
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StradaRedlands5953.50 s_ribs90.00 |
03-09-2020, 07:10 PM | #5 |
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ChiltiCoatl891935.50 |
03-09-2020, 07:14 PM | #6 |
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Thank you OP!
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2011 535i xDrive Black/Black, Michelin PS AS 4
2014 435i RWD Convertible Service Manual: www.newtis.info Part: http://www.realoem.com |
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03-09-2020, 07:44 PM | #7 |
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03-10-2020, 08:00 AM | #9 |
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To be honest, once you've done it once, it's very easy. You could probably get it done in an hour if you have quick jacks.
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ChiltiCoatl891935.50 |
03-10-2020, 05:34 PM | #10 |
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Nope... A jack, 4 jack stands and no ISTA. I'm at the age now where I don't mind paying to have things done. I just did the front brakes on my son-in-law's Sentra and I hurt for 2 days! The left side took around an hour (the caliper mounting bolts were almost frozen and I had to use my HF impact to free them and the inside pad would NOT seat!) and the right side about 20 minutes. His dealer wanted almost $700 for the job!
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ChiltiCoatl891935.50 |
03-10-2020, 06:15 PM | #11 | |
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Quote:
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Bootmod3 Stage 2 | ER charge pipe | ER Catted DP | Remus Exhaust | Gplus FMIC | KW V3 | Turner Monoball thrust arm bushings | Wallet regrets ISTA VM Setup/Tutorial |
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ChiltiCoatl891935.50 |
03-17-2020, 07:19 PM | #13 |
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No problem. Replaced my fluid and pan 3 times in 2 months because I was chasing a slow transmission leak, so I a good amount of experience doing it lol
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BMW_driver_20084.50 |
03-17-2020, 07:21 PM | #14 |
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Now what did you use to measure temp of the fluid?
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03-17-2020, 07:34 PM | #15 |
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03-17-2020, 07:36 PM | #16 | |
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I been looking into downloading ISTA just not sure What's best computer for and best place to download from
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David_Vasha36.50 |
03-17-2020, 07:44 PM | #17 | |
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Quote:
https://f10.5post.com/forums/showthread.php?t=1322045 He takes a bit to respond though.
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EL Jeffe 5613.00 |
03-17-2020, 09:46 PM | #18 |
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bimmercode has it as well
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EL Jeffe 5613.00 |
03-24-2020, 08:14 AM | #19 |
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Yup, most OBD2 reader programs have it. ISTA is mostly just a luxury (ironically), since it's free and walks you through the balancing/refilling process.
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03-29-2020, 10:00 PM | #21 |
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Nevermind got it. Dang that was tough. For those that strip the drain bolt.. don't worry, the fluid will just drain if you leave one bolt in. Getting under the car when it was running was a lot less painful than I was expecting.
Thanks OP for that that fluid pumper video, that was super helpful. |
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03-30-2020, 12:49 PM | #22 | |
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Quote:
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