No click no crank no start

Hello, the rear main seal / oil leak has nothing to do with the no start. What is the "key trouble with the transponder" mean? Yes, if you have no relationship between then vehicle and the keys programmed, then the vehicle will not crank. What can you tell me about what you're thinking here when you say "key trouble..."? I'd start with more knowledge before passing any kind of judgment or making any recommendation, although getting professional local help is always a great answer: www.repairpal.com/repair-shops