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- - Transmission won't upshift (https://mercedesforum.com/forum/diesel-discussions-33/transmission-wont-upshift-13209/)

rsmartin

07-27-2006 01:11 PM

Transmission won't upshift

'85 300SD: was driving on freeway this morning and pulling a long hill, kicked it down to 3rd to pass. Wouldn't shift back up to 4th. Got off at next exit. Car started off in 1st and won't upshift. Any ideas? No slippage, starts of in 1st like normal. Reverse works fine. Engages in gear firmly as usual. But won't upshift.

Randy
'85 300SD
'84 300SD

timberfield

07-27-2006 02:27 PM

RE: Transmission won't upshift

Check that the kickdown switch (under the gas peddle ) didn't get stuck.

rsmartin

07-28-2006 02:02 AM

RE: Transmission won't upshift

Thank you! Told my mechanic who then disconnected switch resulting in shifting tranny again. New kickdown switch ordered.

2benz boy

07-28-2006 03:45 AM

RE: Transmission won't upshift

May be a stupid question, but do all MB's have this kick-down switch?

sleepwalker

07-28-2006 03:51 AM

RE: Transmission won't upshift

yes. even the latest model.

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