Our 2006 Renault Koleos won't start. We checked the battery and it was fine, and everything else works, the radio, heater, lights etc , but the engine won't turn over even once.
Check the ignition switch, which could be worn. To check, turn the switch to crank. If nothing happens turn it back, and then back again to crank. Keep doing it a few times. If it doesn't crank over have an auto electrician check the starter motor.