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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 03-22-2013, 03:52 PM
540i6spd 540i6spd is offline
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transmision problem

hey guys i got a 06 bmw 750li with a trans issue. i cant seem to drive nor reverse if i put the shifter down to D for drive it shoots back automatically to park and if i put the shifter up to R for reverse it shoots back to park i cant move at all i got to put it on neutral threw the key slot on the bottom of the steering colum. i droped the trans pan and then the valve body and changed the gasket that looks like two squares togther and also changed the sleve for the conecteor on the top. Closed it all up and put bmw trans fluid in and still has the same problem. not moving at all. please any replys can help thanks
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  #2  
Old 03-22-2013, 05:11 PM
bmwoem1 bmwoem1 is offline
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You will have pull fault codes. I have seen failed mechatronics solenoids do this
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  #3  
Old 03-22-2013, 05:23 PM
540i6spd 540i6spd is offline
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it says somthing bout parking gear inncorect. and what do u mean by mechtronics
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  #4  
Old 03-22-2013, 05:24 PM
540i6spd 540i6spd is offline
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meaning where is it located etc........
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  #5  
Old 03-23-2013, 03:50 AM
bmwoem1 bmwoem1 is offline
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The mechatronics is the bmw term for the transmission valve body. You will need to get the fault codes read by someone with a bmw scanner.
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  #6  
Old 03-23-2013, 02:23 PM
540i6spd 540i6spd is offline
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i did he said somthing with parking gear inccorect
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  #7  
Old 03-23-2013, 02:36 PM
BuiltnBoostedZ BuiltnBoostedZ is offline
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How many miles do u have?
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  #8  
Old 03-25-2013, 09:15 PM
540i6spd 540i6spd is offline
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i have like 97k miles
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  #9  
Old 03-26-2013, 04:15 AM
bmwoem1 bmwoem1 is offline
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There has to be more than just that one fault stored. What's the BMW code (example 4A85)? I would need to which ones come back after being cleared, the currently present ones.
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  #10  
Old 03-26-2013, 07:18 PM
540i6spd 540i6spd is offline
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507 c
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  #11  
Old 03-27-2013, 04:19 AM
bmwoem1 bmwoem1 is offline
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How did you fill up the transmission (engine running)? Did you clear all faults and adaptations after the repairs were completed?
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  #12  
Old 03-27-2013, 08:03 PM
540i6spd 540i6spd is offline
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yest i cleared all the faults after the repairs i filled it up until it wouldn't take anymore closed it with the plug and then went to start it up i let it warm up so that the trans can get hot and pump and take more fluid but i didnt take all that was in their when i drained it. could this problem need a valvebody not causing it to move at al.
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  #13  
Old 03-28-2013, 03:50 AM
bmwoem1 bmwoem1 is offline
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It's possibly a bad valve body. The transmission needs to filled when cold though, not hot. Check the level when it's cold and with the engine running. You should be able get some more fluid in there. Did you clear the adaptations?
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  #14  
Old 03-28-2013, 01:54 PM
EE745Li EE745Li is offline
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Try clear your adaptations first and see what happens. To do that #1 Remove your feet from the break pedal and Insert the censor key to the knob. #2 Push the start button once to let the lights on the dash board come on (example engine light, seat belt light etc). #3 Push the gas pedal to the floor and hold it for 25 seconds. #4 After the 25 seconds, then remove your feet from the gas pedal and start your car the normal way and see what happens. Remember not to put your feet on the break pedal while doing this procedure. It is after the procedure that you put your feet on the break before starting up.
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  #15  
Old 03-28-2013, 05:11 PM
540i6spd 540i6spd is offline
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EE745LI i tired that nothinge hapend though
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  #16  
Old 03-28-2013, 05:13 PM
540i6spd 540i6spd is offline
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bmwoem1 i did fill it when it was cold until it couldnt take any more at the time . and i did clear the adaptions after it heating up though it still woudlnt take any more fluid. here are some codes i got today.
507c parking lock put in defective.
4f81 ration monitoiring clutch a
507b parking gear sensor impalusible
51ad wheel speed from dsc missing
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  #17  
Old 03-28-2013, 06:21 PM
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Ltmax Ltmax is offline
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PM me your e-mail and I'll send you the ZF service manual that may be able to help determine what the fix is for the problem you're having. I did a valve body (mechatronic) seal kit in two of these transmissions and they aren't all that difficult if you are mechanically inclined and take your time.

If you aren't really good with mechaincal stuff, you'd be much better off just paying someone to fix it.

Last edited by Ltmax; 03-28-2013 at 06:33 PM.
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  #18  
Old 03-28-2013, 06:29 PM
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Ltmax Ltmax is offline
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Just a little bit of what's in the ZF service book file:

With E-versions of the 6HP26, there are no mechanical connections from a shift lever to the transmission. The shift into park is mechatronic controlled via the MV2 and MV3 solenoids. The Parking Lock can hold the vehicle on uphill and downhill grades of up to 32% and will not engage at any speeds above 1.2 mph (2 km/h).
Part of the Park Lock system consists of a typical parking rod with a tapered tip that sits into a guide which when park is commanded, will extend into a spring loaded parking pawl. The tapered tip will force the parking pawl to pivot into the parking gear. Once the pawl engages the gear teeth of the parking gear, the output shaft is locked.
There is a pre-loaded barrel spring mounted on a rotating lever that operates the parking rod with the tension of the spring pushing the lever and rod in the park position. To release park, the MV3 and MV2 solenoids are energized.
The MV3 solenoid is mounted on the back side of a parking lock cylinder. Inside the cylinder there is a piston which the front of it connects to the rotating lever. When the MV3 solenoid is off, a shaft extends out from the solenoid pushing the rear of the piston and lever into the park position. When a command is made to release park, the MV3 solenoid is energized and the shaft detracts. At which time the MV2 solenoid is also energized and it supplies fluid pressure to a chamber inside the front area of the cylinder which pushes the piston, rotating lever and parking rod into a released position

“E” SHIFT BMW STUCK IN PARK
When Park is requested, the MV2 solenoid is turned off and the pressure keeping the piston in a released position is exhausted. The MV3 is also turned off and the shaft extends pushing the piston assisting the barrel spring on the rotating lever to move the park rod into the Park position
The transmission can only be shifted out of Park through the Mechatronic system with the engine running, brake depressed and either R, N or D is selected. If there should be any reason the engine can not run, a Bowden cable (bi-directional cable) can used for a manual release of the parking pawl and is usually found behind a kick panel.
Detent balls are used to assist the piston in remaining in the “out-of-park” position (referred to as the “N” position) when the engine is off. Position “N” is automatically selected should the engine be turned off with the key remaining in the ignition. It will remain this way for 30 minutes before it will automatically engage Park. However, it could remain in the “N” position for another 30 minutes if “N” is selected again before the previous 30 minutes have elapsed.
Depending on the operating status of the electromechanical parking brake, it is possible to
engage park when the engine is not running in the event of a fault with the electromechanical parking brake.
There is a feature with the electromechanical parking brake called the Auto Hold function. Should the system see that the engine is running, position D or R is engaged, the door is open and a seat sensor indicates that the seat is empty, it will automatically engage the Park Lock and set the electromechanical parking brake. Another aspect of this electromechanical parking brake is if it can not switch from the “hold” to “lock” mode, the Park Lock is automatically engaged following a plausibility check in the EGS control unit. The plausibility check determines whether position N is engaged, the speed is zero and the engine and ignition are off.
As mentioned previously, a Bowen cable is used as a mechanical emergency release of the parking lock system should it not be able to release automatically. This could be caused by several reasons such as a battery failure, the engine can not start, a problem with the engine’s electrical system or the transmission’s electrical system to name a few.

It is imperative that this emergency release be used when towing. Depending on the type of fault present, the “N” hold function can not be guaranteed during the entire time of the tow even if output speed is recognized (Please refer to owners manual for the vehicle being towed).
In some applications, this Bowden cable is only accessible by unlocking a cover with the vehicle key. Whenever the emergency cable is used to release Park, a message of some form will be displayed in the instrument cluster indicating so.
For M-versions of the 6HP26, there is a mechanical connection from a shift lever to a manual valve with which P, R, N and D can be selected. As a result, MV2 and MV3 solenoids are eliminated.
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  #19  
Old 03-29-2013, 04:15 AM
bmwoem1 bmwoem1 is offline
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Could you email me that ZF manual as well? My email is bmwoem1@gmail.com
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  #20  
Old 03-29-2013, 04:57 AM
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Ltmax Ltmax is offline
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Done.
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  #21  
Old 03-29-2013, 05:42 AM
540i6spd 540i6spd is offline
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hamed1226@sbcglobal.net
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  #22  
Old 03-29-2013, 05:46 AM
540i6spd 540i6spd is offline
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can u do the same for me send that too please^^
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  #23  
Old 03-29-2013, 11:40 AM
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Ltmax Ltmax is offline
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Done
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  #24  
Old 03-31-2013, 05:58 PM
fratan fratan is offline
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this should help. Yhanks for the info on the parking lock sensor. my 04 745 130000 just got the tranny issue with the transmission fault.
Attached Files
File Type: pdf ZF Transmission Diagram.pdf (3.06 MB, 162 views)
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  #25  
Old 04-29-2013, 11:44 AM
fratan fratan is offline
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I just wanted to post the fix to the 507c,507b 507d and the 4f97 under the gearbox module in inpa for the zf 6 transmission. My wife has a 745i with 129000 miles. I called the distributor for ZF located in Connecticut www.erikssonindustries.com 800-388-4418.
The engineer for the company was very helpful. He said that 99% of the time the error codes are caused by a pressure loss from a broken bridge adapter. Bingo!, after 2 months trying to figure this out it finally clicked. This weekend my son was able to get t the bridge adapter by just moving the mechatronics a little bit instead of taking it apart.
We did a tranny fluid change using the green bottle of Castro Import European multi vehicle tranny fluid. Remember, remove the filler nut first. He had a hard time removing this nut and broke the hex. He had to drill into the broken plug and use a lock washer to untighten the plug. This car has a lot more power now and the codes actually cleared themselves. I need to give Wilson a big thank you for putting this information on the site. Without this, I wouldn't have talked to the engineer at Eriksson industries and my son wasn't sure what the cause was. Bridge adapter is a major problem so change your tranny fluid around 100,000- 120,000 and replace this adapter.
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File Type: pdf DIY Transmission Oil Change.pdf (1.02 MB, 66 views)
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Last edited by fratan; 04-29-2013 at 11:59 AM.
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