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2011 N55 335 transmission not engaging
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10-22-2024, 02:17 PM | #1 |
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2011 N55 335 transmission not engaging
Just had my 2011 towed to shop with 100k miles. It’s interesting how this progressed from first signs a year ago. My car only has a mhd s1 and it’s babied I use it as commuter and don’t track it or race it. First noticed some rough shifts from 1-2 and took to bmw they suggested a transition software update noted out of it. After a while noticed the trans would slip and then engage. I stoped driving it till o got it to the shop and inrerestingly it completely stopped going to any gear after I let it sit a few weeks. I asked the shop to do the seals and went with the kit from FCP. I’m torn about spending extra money on solenoids too. Do they typically go bad? Wonder if worth the preventative maintenance.
It’s been a great ride had it since 2015 with 9k miles. I miss it a lot haven’t driven it for a month as the shop was busy. Can’t wait to get it back. 
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2011 335 Msport Xdrive
Space grey purchased on 8/7/15 Last edited by Herakles; 10-22-2024 at 02:17 PM.. |
10-22-2024, 05:32 PM | #2 |
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Well, maybe you should also check the errors. They might give you an indication of what is going wrong. That hesitation that you were talking about could also be caused by the solenoids.
For sure changing the solenoids would do no harm, only good. But that might not be your problem. A thorough check is needed |
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10-22-2024, 07:20 PM | #3 | |
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Quote:
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2011 335 Msport Xdrive
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10-24-2024, 05:17 PM | #5 |
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did they check the fluid level? If it was moving, but stopped after sitting for a few weeks, it sounds like a fluid leak.
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10-29-2024, 02:58 PM | #6 |
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Hey guys update
I took to shop they said had oils stains on trans pan and when they opened it only about two quarts maybe They m changed the pan, filter and new oil and driving the car they said it doesn’t shift sharply so they Are going to keep driving it to see if it learns again and adjust if not mention something about resetting the computer settings? It’s a reputable shop that specializes in Porsche and German car services I had initially asked him to do the seals proactively, but he didn’t which might suck because now I might pay double the labor if they have to reopen it to do the seals and New 2 I guess I’m wondering when I stopped driving it for a few months because it was acting up did that have anything to do with it? The real crappy thing about a year ago when I first noticed it shifting hard I took it to the BMW shop and they said they didn’t see any leaks and offered to reset the computer and I didn’t but it was probably running low on transmission oil since then
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2011 335 Msport Xdrive
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10-29-2024, 03:37 PM | #7 |
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Well a little disappointed
He said there’s improvement but still feels slipping a little less though though some fear changes but totally drivable I expressed frustration that I did send him the link the the kit that included the seals but he changed everything and didn’t do the seals - I explained they are knows to go bad in it and we should try to change them because I don’t want the car back driving like shit She said he will work on the labor with me a little for the rework and save the oils and re used the new filter and pan I’m hoping the seal change does it guys
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2011 335 Msport Xdrive
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10-29-2024, 03:57 PM | #9 |
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Thanks I didn’t tell him to do solenoids just seals
I guess I can try just seals and if not better just take it back or wonder do solenoids too ? Also meant to ask a lot of people on FCP euro right that the kit for transmission fluid is 7 quarts but it really takes 8 quarts. Is this true? My mechanic insist it’s 7 quarts. How can you tell it low if there’s no dipstick and can only fill it from the bottom?
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2011 335 Msport Xdrive
Space grey purchased on 8/7/15 Last edited by Herakles; 10-29-2024 at 04:17 PM.. |
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Today, 08:10 AM | #10 |
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The solenoids are the ones that do most of the work. If you open the transmission, the best bet is to do the solenoids. You might not solve anything with just some seals…
There is a filling procedure from BMW and ZF. The filling quantity differs |
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