I have 2006 lexus rx330 and I recently replaced the battery because once car is parked it would not crank unless I charged battery, so I replaced battery. The starter, and alternator were checked and nothing is wrong with them. After I replaced the battery about a week ago, car would not crank today again until I charged battery.... Im not sure why car is not starting unless I get a jump.

 

something is drawing power when it shouldnt be (parasitic draw) and depleting your battery

 

Thanks so much for your prompt response. I will definitely check this out!