HI All

My Mercedes 450 slc is not changing from 2nd to 3rd gear. my filter and transmission has been changed and it still does not select 3rd gear.

when I engage Drive ( presume I can call this first gear) good response. when I take off it makes the next change( 2nd gear) at 40km/hr smoothly . then does not change to the next gear ( 3rd).

I tried kick down , but it does not seem to engage. all that happens is the car Increases speed on the same gear( 2nd)

should the valve body be looked at or should i try with the easier option of changing the kick down switch?

your thoughts please.

regards
collin