2003 Toyota Tundra Battery Drain

I started to pull relays one at a time and when I pull the efi relay it stops.

2003 toyota tundra battery drain. 2003 Tundra V8 47L. I would start with a new battery and also measure the current drain on the battery. The dealer can not find anything wrong but dont know how much they are checking either.

If your Toyota Tundras battery is draining its something thatll need addressing right away. Installed a new battery three weeks ago. Mysterious battery drain.

If it seems high start pulling fuses to see what circuit is causing it. Will go dead after 3 or 4 days last time I charged it I noticed a mid-pitch squeal coming from the engine with the keys off and out of the ignition. 2 Jan 19 2008.

All electrical items seems to function okay. You need to hook up an Amp clamp to the battery cable and see how much drain there is when its just sitting. If it is draining while your Tundra is off its usually caused by something that is drawing current that shouldnt be.

Ive had the battery and alternator tested multiples times and both always test good. If there isnt a drain when its just sitting the battery is probably bad. Shortly after I bought it new I had problems with the battery going dead when the car sat for more than a week.

Im not sure how long its been doing this because previously I was driving the. How to do a parasitic draw t. I had a Compustar alarm with remote start in my 2002 Tundra.