Question about 1995 Mercedes-Benz S-Class

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Transmission Hangs in second gear for about 1 mile. This is happening in a 2nd transmission just installed the same as it was doing in the original one.

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  • wgoins1947 Sep 13, 2008

    Thanks for the module suggestion. Will relay to my mechanic.

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Sounds like a problem of the car going into limp mode temporarily (that means the car locks itself into second gear to prevent too high a road speed which might damage the car). It may not be an ECU-directed limp mode (which would happen when the car senses a failure that could damage the car), but could just be a failure of one or more sensors on the car. Failure of the vehicle speed sensor, throttle position sensor (or throttle angle sensor, if you have a drive-by-wire car), or a shift solenoid could cause the car to hang up momentarily. Was the car scanned for chassis fault codes? It would have to be done at a shop. AutoZone could scan for ECU codes for the engine, but it won't always pick up on chassis codes. Have the car scanned at AutoZone and see if any codes come out (there won't necessarily be a check engine light), and if nothing is there, have a shop scan for chassis codes and see if there is a problem with any of the chassis-driveline related sensors. AutoZone does free computer scans, but a shop will likely charge you. If you can do this, and then post up any results that you find, we can narrow it down from there.

Posted on Sep 13, 2008

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I would hope they changed the fluid.. it can be a transmission control module located on top of the tranny i believe

Posted on Sep 13, 2008

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