E-Class (W211) 2003-2009

Intermittent Transmission Problem When Upshifting

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Old 08-02-2010, 03:05 PM
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sold - w211 e320, f250, rx7 race car
Intermittent Transmission Problem When Upshifting

2003 E320, 75k miles, 2nd owner, acquired with 13k miles, all service done at dealer.

Just started having an intermittent transmission problem. It gets stuck in 3rd gear and does not want to upshift to 4th. Cluster indicates transmission is in D. I've flipped between S and W, tried to manually shift down to 3rd and then back up, but it stays stuck in 3rd. Have tried staying off gas for a few seconds, jabbing gas pedal, nothing works. Only way to fix is to slow down back to 1st gear and get started again. Has happened 3 times in past couple of days. No dash lights on.

Anyone ever have similar problem and what was fix?
Old 08-02-2010, 03:57 PM
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2008 E550, 2012 GL450, 2014 GLK350, 2015 S550, 2020 GLC350e
Have you tried the ECU reset? Just curious ..
Old 08-02-2010, 05:35 PM
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Originally Posted by Vik888
Have you tried the ECU reset? Just curious ..
Forgot about that trick even though I posted about it years ago https://mbworld.org/forums/e-class-w...e55-forum.html

Worth a shot, we'll see how it works. Good suggestion!
Old 08-04-2010, 08:24 AM
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ECU reset did not fix it, got stuck in 2nd a few times yesterday. I found that if I manually downshift to 2nd while it is stuck there and then upshift it back to D it will move on to the next gear. Going to take it to the shop next week when I have time.

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