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98 BMW 528i
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589 Posts
Discussion Starter #1
Recently in the last few months the S320's tranny has been shifting rather clunkily. Most noteably under heavier acceleration. Sometimes it will rev to 3k rpms and then not shift under normal acceleration unless you let up on the gas. Other times it shifts smooth from 4th to 5th. I know the car is programmed to rev higher when the engine is cold and that the tranny may have been a very early 5 speed since the car was a 96 model. What kind of prices are we looking at for a full replacement? Rebuild? Service? Who knows maybee a flush and new fluid will help. I guess its worth the $. My dad plans on driving the car for a good 5 years yet so what do you reccomend? I have already told him to start budgeting for a new tranny just in case...
 

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2007 S550 Sport
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911 Posts
I am guessing a new tranny would cost a few thousand dollars, so first I would go with all the obvious "checks". See if you need to replace tranny fluid or make sure all is screwed in tight. My friend was going to replace his tranny when he found that a few peices had come out of place and when it was all put back as normal, the improvement was apparent.

Hope this helps, but if u need a new tranny, shop around as if you go to the dealer, you will be paying a huge premium.
 

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93 500 SEL
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19 Posts
I would try a full servicing of the transmission first. If you have one with high mileage that's never been serviced, you will have problems almost immediately after the servicing, but it's still worth a try. I recently had the tranny rebuilt on mine by my independent MB mechanic for $2K. If I had gone to the dealership, they would have swapped out my tranny, put a rebuilt one in it, and probably charged me $5-6K.
 

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SEC 600 V12 2dr COUPE (RHD) One of the chosen few.
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2,233 Posts
Found this you might want to look at..

722.6:codes 053, 134, 146, 149, improvements to the 1-2 full throttle upshift and the 3-2 downshift. 58/99-2 GROUP 27 - MODELS 202, 208, 210, 129, 140, 170 WITH AUTOMATIC TRANSMISSION 722.6: There have been some new electronic transmission control (ETC) modules produced for the correction of codes 053, 134, 146, 149 as well as improvements to the 1-2 full throttle upshift and the 3-2 downshift. The part numbers for these new ETC modules are as follows:
M119/120 engine - 026 545 72 32
M113 engine - 026 545 73 32
M112 engine - 026 545 84 32
M111 engine - 026 545 82 32
M104 engine - 026 545 85 32
For the 220, the improved software has a part number of 022 545 51 32 which is already installed in all but the very early production 220's, so please check prior to replacement.
The ETC modules can be ordered using the 26 extension on the part number and the VIN to ensure proper version coding from Germany. Part numbers do not apply to AMG vehicles.
Please remember that software will not correct a hardware problem, so please check the vehicle carefully before changing to assure that the control module replacement is required.
 
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