After checking all lock switches and wiring (with the problem still there) I decided to remove the pump (under rear seat) and open it up. Well someone had a lot oft time and ingenuity to desin that one. I dismantled it, checked the circuit board for pad solder spots, checked vacuum hose connections and re-seated them. So realy I found no fault with the pump at all. (What have I disturbed to fix it??). After the pump was re-installed I initialised the remote key and all is working fine. Time will tell , I still carry a second key tough!