Check your battery voltage with a voltmeter first. This will determine the battery voltage levels - 11.5v minimum for the charger and control system to work. If any batts are low, charge them individually with a 12v-10a car battery charger. Then try powering up the car again. Make sure the Master Disconnect Switch is turned On. Check your Owner’s manual - if you require a new one download it free at Global Electric Motorcars For further technical assistance email service@gemcar.com