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Recently, on morning starts, I get a message "Transmission Malfunction". The transmission gets stuck in 2nd gear essentially. But after a few minutes it'll go away and work fine - sometime by itself, and other time after a restart. It's always on first thing in the morning. It doesn't show up rest of the day. I took it to a shop and the mechanic doesn't know what's going on. Any ideas out there? Thank you!
 

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2013 750i and 2015 740i
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Without seeing that the codes are, it's hard to say. You'll want to find a better mechanic who can actually diagnose the issue. Changing the fluid and filter could be something worth trying, as that's the cheapest potential fix. Expect to pay somewhere between $600 to $1K, 10 quarts of ZF Lifeguard 6 or 8 fluid at ~$25-40/ea and the pan/filter for ~$70-200, depending on where you get the parts from (higher numbers are dealer prices).

Make sure you find a mechanic who is familiar with ZF transmissions, there is a specific process for filling the fluid and they will need to monitor the temperature using the diagnostic system. The mechanic you look it to previously is definitely not qualified to perform this.
 

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Recently, on morning starts, I get a message "Transmission Malfunction". The transmission gets stuck in 2nd gear essentially. But after a few minutes it'll go away and work fine - sometime by itself, and other time after a restart. It's always on first thing in the morning. It doesn't show up rest of the day. I took it to a shop and the mechanic doesn't know what's going on. Any ideas out there? Thank you!
It sounds like you could be low on fluid, or the Mechatronic Adapter Seal has hardened & is allowing fluid to bypass the seal. The valve body will need to be dropped to access the seal, but not that hard of a job. The fill plug is located on the passenger side of the tranny, & the fluid must be added will the engine is running.

Have you by chance had any battery problems lately, or changed the battery?
 

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Thanks for the help. You're probably right in that the mechanic isn't at this pay grade. Will take it to a BMW mechanic and mention your suggestions. Thanks!
 

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The BMW dealer will try & sell you a new transmission, take it to a local BMW service shop that works on German cars. Changing the fluid will cost you anywhere from 350.00 to 500.00, depending on the shop you are using. I would ask questions about the Mechatronic Adapter seal change, along with the Mechatronic Sealing Sleeve. The 2 seals at the dealer run around 35.00 for both,
 

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Hi Sonny...did you ever get this resolved? Did a transmission oil changed fix this issue? If so, mind sharing who did the work. Seems like you may be located in Newport Beac, Ca...I am located here so wondering if I could take it to the same place. THANKS

I just started experiancing this w my 2011 740li.
 

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Hi @aroma25. The mystery "transmission malfunction" prompt went away mysteriously by itself. I did take it in to Bullet Performance in Costa Mesa and initially they thought it was an electrical issue, possibly related to alternator. Now they think it may be a terminal transmission. However, since the problem went away by itself, I'll just wait and see how it goes.
 

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whughes
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DON'T WAIT!!!! Change your fluid at least twice with a few hundred miles in between, cheapest route to potential fix
 

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Hello Guys i've been having the same issues as well... I've had the transfer case changed and the transfer case module replaced last year may 2018.. Just recently about a month ago, I've been getting "Chassis Malfunctioning" if the car is on a slight hill, it would put itself into "P"... or if i tried to reverse it will also on "P". and i will get "Secure car from rolling" and no doors would be open. I've had my BMW guys check for codes, He said, battery was at 70%, something about the wheel sensor (i'm assuming cuz my tires are 245/45/20) he mentioned my tires are too big and it will trigger that warning until i changed the tires. I also replaced the battery. But these messages keeps coming up, and i'm afraid if i go to the dealer they tell me i have to replace the transmission and i'm looking at 12k!!! Any suggestion?
 

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...if the car is on a slight hill, it would put itself into "P"... or if i tried to reverse it will also on "P".... i'm afraid if i go to the dealer they tell me i have to replace the transmission and i'm looking at 12k!!! Any suggestion?
the dealer will definitely tell you to replace transmission. So will my local independent BMW "factory trained" specialist shop, cause he only repeats what he learned at the dealer. Yes he's a moron, and no I didn't let him work on my car.

What is happening is that your parking solenoids are not releasing when in a bind (like on a hill).

While this could be caused by low pressure or weak/bad park solenoids, the one shot fix is to replace all the solenoids, the bridge adapter seal, the 4 tube seals, fluid and filter.

The bridge adapter seal and the 4 tube seals could cause low pressure (as well as two of the pressure regulating solenoids), you would probably have more issues than you do. But since you have to pull the valve body to change the solenoids, you might as well change the seals. And you will probably need to replace the connector sleeve also.

Make sure to use new ZF parts (not refurbished, don't ask me why or we'll be here a while :cry:) should be around $700 for parts. Solenoids 300, filter and fluid 300, seals less than 100.

If you don't do it yourself, take it to a transmission shop. Should be 5 or 6 hours labor.
 
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