StageaNM35 triptronic gear stuck

[samuri]

StageaNM35 triptronic gear stuck

2002 model Stagea

When moving from automatic to  the triptronic gears , the gear remains in 4th .

It will not move up from fourth gear nor move down to other gears.

This seems to happen on a highway trip of about an hour or more.

If I turn off the engine and re start the engine the problem seems to disappear.

Any possible idea as to what is happening?

[Equilibrise]

It does this as a form of protection when there is a fault like fluid too hot or fluid level low.

I've posted instructions on transmission ecu diagnostics procedure in the past. If the fluid is fine then check the transmission ecu for fault codes.

[samuri]

Thanks.

Did an unsuccessful  search  so need more info as to keywords or link please

[valf]

http://psedog.com/cars/fsm/g35/sedan/2003/at.pdf

Page 98-99

[Equilibrise]

That's it. 

The post on here is under "m35 transmission diagnostic codes"