Question about 2007 Toyota Camry

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Something as small as inside lights is pulling down my battery

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  • Toyota Master
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Hi Marilyn,

Unfortunately, that's all it takes to draw a battery down to the point that you can not start your car the next day. This is especially true if your battery is not new and the car is not in a heated space when it is cold outside.

You'll need to determine what is causing the lights to remain on. Sometimes, it can be something as easy as a switch on the dashboard or light itself that is in the wrong position. A common type is a switch that over rides the normal operation of the light - keeping the light on or off all the time. Check around the bezel of the light for this switch and change the position of it. The same holds true for the dashboard. Many have dimmers to adjust the brightness of the dash lights & electronics. If the dimmer is adjusted too far it will turn on the cabin lights. Check it to be sure it is not adjusted fully "up". It is also possible that something connected to your car's cigarette lighter or power port is drawing power, too. Don't forget to check those.

Next, are the door switches. Near the hinge on the car (not the door), is a plunger type switch. When the door is open, the plunger sticks out. When the door is closed, the door edge presses the plunger in. Look at all the door openings - including any hatchback - for these switches. Press them in one at a time by hand to see if you can find one that isn't working correctly. Have any found not to be operational checked and replaced as needed by your mechanic.

Lastly, some cars have a special body controller that operates the lights, radio and other electronics based on any number of different situations. This can be more difficult so solve and potentially more costly to repair.

I hope this helps and good luck!

Posted on Oct 26, 2012

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  • Toyota Master
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First check the battery voltage with engine off you should have at least 12-12.5 volts it not then replace the battery.Then check your battery voltage with engine running it should be 13-14.7 volts.Anything less than 13 volts replace the alternator.

Posted on Oct 26, 2012

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