I'm having this same issue. My battery drains after about 2-3 weeks. Jumping the battery and driving around was fine for a while, and it would stay charged again for 2-3 weeks. Then after a good amount of driving, the next day it was dead. Bought a brand new battery, and again, it goes dead after 2-3 weeks. How do you check for current draw, and what is the fix? I see checking the fuse boxes, but what are you checking for, and what is the fix? Thanks.

 

Welcome to the forum. Lift the positive battery cable & place a VOM set for current between the battery post and the cable. You should see a small current draw, probably in the milliamp range. Then you start pulling fuses 'til it goes away. That'll get you to the circuit then you'll have to figure what's drawing that current.

 

I'll add it make take up to 30 min. for all the onboard modules to power down after opening drivers door for a accurate reading.
Stuck CD or cassette in player will cause power drains also.