2009 lexus rx350 will not start.

Hello, are you ensuring a properly programmed key is being used to start the vehicle? If you have a key that is not programmed to start the car, the lights will come on but the engine will not crank. Try another key if one is handy. The starting system could be suspect as well. If you indeed have installed a known good battery in the vehicle and have verified all connections are attached properly and securely - and that there was no surge that caused a fuse to blow during battery replacement or attempts at jump starting (if there were any), then you would next want to have your starter motor checked for it's ability to engage without drawing too much power. Hands on testing would be needed. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.