I was able to unlock the top : 1. Remove trim ring at base of of inner back window, 2. used 11mm wrench to unfasten screws on plate which holds latch. 3. Removed latch from lock
reinstallation is troublesome as I had to distort the covering on the plate but I did reattach it ,although I doesn't look factory spec no one can see it. I replaced the trim piece so only the car and I know it was disturbed.
Now I am able to open the tonneau cover and store the top in the compa
rtment.
Next on the agenda is disconnecting the battery for an hour and see if this clears the fault codes. If not ,then off to my indie.
Thanks