Hello all,

And a challenge.

300CE24 5th gear disappeared again. What have I done to investigate this:

Replaced microswitches under gear lever. Confident that all's OK here.

Cleared 4 flash fault code: “Throttle valve switch (potentiometer) interrupted.”

Drove 8 km to refuel and 5th has gone again.

Checked microswitch again - seems OK. Now cannot clear fault code.

Several days without 5th
.
Colder this morning (clue?) drove off and we have 5th.

But not for more than 15 km. It’s gone again.

Is this temperature-related? The first time failure did seem to be in very hot summer weather.

I can say more, much more, on this but shall await initial feedback.

Best to all.

RayH