Originally Posted by MATT222

have you tried a drain test on the car?? you should have a drain of no more than 0.3amps.it sounds like you have a drain on the battery causing it to discharge.if you have a drain then you could pull each fuse out until the drain reachs the set point of 0.1/3 this is for the led for the pats flashing and keeping the radio stations etc. hope this helps