how do you check transmission fluid on 2004 BMW 545i

at 35 to 40 shifts in and out of overdrive

by in Sarasota, FL on March 22, 2010
5 answers 3 comments
ANSWER by on March 23, 2010
at 35 to 40 shifts in and out of overdrive: Under normal excelleration, this is the normal speed for the converter to lock up...unless it does what I call "being busy". In and out and in and out, repeatedly. If this is what's happening, you have a bad torque converter pressure switch.
ANSWER by on July 17, 2010
I HAVE THE SAME PROBLEM ON MY 545I THE TRANSMISSION SOFTWARE NEED TO BE UPGRADE OR THE SHIFTRONIC INSIDE THE TRANSMISSION WILL COST OVER $4000... EASY
COMMENT by on September 04, 2010
I have the same problem in my 2005 545i. How do you upgrade the transmission software?
ANSWER by on October 22, 2010
I had the same issue until my transmission malfunction light came on...I took it to several Transmission shops only to find that my transmission oil pan was leaking and had been for sometime. The filter, pan, and transmission gasket come as an assembly so all of that was replaced. When the shop drained by transmission I had 2 quarts out of 2 gallons. I was lucky the transmission did not burn up. Anyway...I had new fluid, and the pan, filter, gasket assembly replaced for $650 and once the computer reprogrammed itself my car is good as new.
ANSWER by on December 05, 2010
where is the dip stock located to check transmission fluid located?
COMMENT by on December 06, 2010
It is not under the hood. Fluid must be checked on a lift.
COMMENT by on January 01, 2011
right hand side of the rear of the box an 8 mm haxgon key allen key inthe uk open and check really you do need a lift answer #3 look for that if you under the car
ANSWER by on August 17, 2011
A year late tot he party but i had the same issues with my 2004 545i. Really concerned me and mechanics could not recreate or pinpoint the cause. Along with this I was having massive electrial issues. Eventually(well over a year) it was determined that I had a faulty alternator. Once that was replaced the banging(transmission issues at 35/40mph) went away. Have your alternator replaced or checked.