Yes, we "found" 6th gear !!!
It never went away.
The vehicle does not start in first but in second, which is normal ! 🙄
The speedometer was showing 60 km, which is too slow for the Drops. Hence the thaught it did not take 6th.
On checking with the gps it really dit 85 .
So.....
We are now looking for another speedometer !!