Transmission Error Message
Error Message: Trans. range N only with engine on!
Symptoms: Vehicle will not move once temperature warms up.
Probable cause: Bad transmission Valve Body Seal – consider replacing the solenoids at the same time.
REQUIRED PARTS TO REPAIR
Transmission Valve body seal part number 24-34-7-588-727-M103 (M103 suffix may not be necessary)
Purchase here: https://www.pelicanparts.com/More_Info/24347588727.htm?pn=24-34-7-588-727-M103
Transmission Pans gasket
New drain plug
Lifetime fluid
Mecatronics Sleeve
Consider changing the transmission cooler lines?
Transmission filter and o-ring
SOURCES FOR PARTS:
Confirm correct part: https://www.pelicanparts.com/More_Info/24347588727.htm?pn=24-34-7-588-727-M103
Replacement parts: Confirm you have 6HP26 transmission. https://www.thectsc.com/catalog/6hp26/28/32-8.html
INPA RESET KIT: https://www.ebay.com/itm/For-BMW-INPA-K-DCAN-DIS-SSS-NCS-Coding-ISTA-Diagnostic-USB-Interface-Cable-CD-/192582918249
The above link is broken, maybe this is the right part:
Solenoid Kid – confirm correct kit: https://www.thectsc.com/products/solenoid-kit-6hp19/26/32-m-shift-36-115.html
VIDEOS AND WEB PAGES DIAGNOSING THE PROBLEM
Youtube video Explaining solution: https://www.youtube.com/watch?time_continue=5&v=u6-WmqI9UXw
Bimmerfest forum post: https://www.bimmerfest.com/forums/showthread.php?t=615725
Transmission Valve Body R&R Step by Step: http://www.bimmerboard.com/forums/posts/673185
Mechatronic Replacement: http://www.zftranspart.com/images/custom/mecha.pdf
Complete fix for transmission: http://www.bmwlogicseven.com/?p=3738
3 minute Youtube video Step by Step for Mechatronics R&R: https://www.youtube.com/watch?time_continue=2&v=zwjvxRZyvWM