Tiptronic Problem

[Betsyboo]

Hi all,

My1997 Boxster has a gearbox fault which activates the safe mode ( D-4 flash)

I had the fault cleared and the error message was 'upshift/downshift switch'.

The error was cleared and drove perfectly in auto and also in manual. Both left and right switches on the steering wheel activated all gears no problem for a hour or so. I switched the car off and the error was back.

Today I had the car into Porsche to find a radio code and they said the error in the box read ' Gearbox Multifunction switch'

Are these two different issues or read /worded slightly different by two different diagnostics ?

I've taken the switches out of the steering wheel to inspect and cleaned them with electrical contact spray.

I'm assuming there's another switch eleswhere that has failed. Can someone point me in the right direction.
Thank you
Jon