Toyota echo battery drains overnight - 2002 Toyota ECHO

Easyest thing to do is pull one cable off your battery. Start pulling fuses and each time touch the cable to the battery post. When you find one that reduces the spark drastically that is the circuit to investigate.

Probably is a bad battery. Most of them start to die after 1 1/2 to 2 years. Try to use a jump start or another battery to verify. Good luck.

you may have a short circuit in the system seek auto electriction

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No Fuel
Dead Battery
Security Key stopped working

What is it Exactly doing? When did it Stop working, did it happen overnight? We need more information

More than likely battery doesn't hold a charge overnight. After time batteries don't charge as deeply and can't hold a charge. Jump start and take to any good parts store and have them load test your battery (they do this FREE) Autozone or Advance would be my first choices. While there have them test your charging system - they do this FREE also.

You may have a "parasitic battery drain". (Hint: google "finding parasitic battery drains") Basically, there is something "on" that is draining the life of the battery even while the key is off. Common sources are courtesy lights under the hood and in the trunk; even in the sun visors. Also, anything that is hooked into the cigaretter lighter (or "power port") circuit. These items could be aftermarket car alarms, inverters for operating portable electronics, phone chargers etc. If you eliminate all these and still have the battery draining down, you may have a low amperage short somewhere. To find the circuit responsible, you will have to connect an ammeter in series with the battery negative cable. Say for example that it still shows a .1 amp drain--even with everything turned off. Start pulling fuses one at a time until the amp drain reads zero. The problem will be on the circuit of the last fuse you pulled. From there, you'll have to try and disconnect each item on that circuit until you find the culprit. It sounds tedious and it is.

It might be shorted to another circuit. Does ammeter read below 0.30 amps. Sounds like its shorting between door-ajar and radio. You have to back probe circuits until you find the short.

This should be done with everything turned off and the door closed. with negative battery disconnected. place 12 v test light between the battery terminal and the cable end.(on neg. side) if the light lites up there is a drain. remove one fuse at a time until u see the lite go out. that is the sytem the drain is on. usually glove box light or trunk light or visor light left on or stuck on.

does it go away as it warms up ? or does it stay that way check belt tension

there was a short circuit on your wiring.the wire on your radio contact the same with wipers and signal light connection.