Hello municipality, only a short time ago from a friend got a 450 Bj. 99, 40kW petrol with only 32-kilometres. So I am still absolute beginner. Unfortunately I have repeatedly the problem that is shown in the display a „X. One starts then no more. I checked the backup box under the seat as well as the ZEE under the dashboard, cleaned contacts and fuses checked. All relays from another 450. Unfortunately no reproducible error found. The one day he does not run the next again. I already asked in other forums but unfortunately still did not get the hint. Maybe here someone can give me a hint what I can still do. (The free workshop in front of my front door has already deleted the sails). VG JB