I need my hybrid battery reconditioned if it is possible. according to lexus

What is your question?

the car has all the books and records from lexus. The check engine light, and traction control light, also ABS and check hybrid system light all came on it was fine one day and did this the next. The key would not work at first so i finally got it to the lexus store and they said it needed a key to tell what it actually needed and $400.00 dollars later told me it needed a Hybrid battery almost $7,000. I can't afford that please help