Hi,

My 206 won't start. All the dash lights come on and the stereo comes on but engine won't start. I started it, turned it off, popped into work and came out and get in car and now won't start. Have locked/unlocked it, have this and re connected battery and still nothing. Didn't leave any lights on and there's plenty of fuel.

Please help

Remove and fully charge the battery. Most auto parts stores will do this for free. My gut is you need a new battery.