Key won’t turn

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your S500. When a key doesn't turn in the ignition after a jump start, it could be due to an issue with the electronic ignition switch. A weak or dead battery in an S500 can sometimes trigger anti-theft or security measures, stopping the key from turning. Start by ensuring the battery is fully charged, and try locking and unlocking the vehicle with the remote to reset the security system. The immobilizer system or steering lock mechanism may require recalibration if the issue persists. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!