Lexus RX350 Battery Drain Problems

You can’t pull a fuse on todays cars and check for a current draw. When doing that you can force a computer/module to go to sleep that may be drawing the current and never find the current draw.

Instead, leave everything connected and take an infra-red thermal gun and point it at the fuses and relays. If you find a fuse/relay that’s hotter than the others, that circuit is drawing higher current than the others and should be investigated first.

Tester

1 Like