In the morning it occatinlly will not turn over
after sitting the night it occationly will not turn over on 1998 Lexus GS400
If it seems to be okay after it starts and drives a while, you may have a parasitic draw on the system. This is something that remains on, even after the key is off. A sticking relay or even a module that is not powering down can discharge a battery and be intermittent. Also check the glove box, under hood and trunk lights as well as those in the vanity mirrors.