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I have a '91 Mercedes 300SL with 112,000 miles. When driving down the hwy, it will not shift into overdrive.

At times, it will shift into and out of overdrive several times, but will not stay in OD. Any ideas???

Update:

Yes, I serviced the auto trans, hoping that it would solve the problem but it did not help.

2 Answers

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  • Hans
    Lv 4
    1 decade ago
    Favorite Answer

    Auto trans? 300SL's come in both auto and manual

    sounds like the vacuum governors on the side of the trans needs adjustment

  • 1 decade ago

    Have you changed the filter and transmission fluid recently. This sounds like low fluid level or foaming.

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