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Home > Home & Garden > Cars & Trucks   »   95 Toyota Avalon Electrical System instantly died

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Old Jul 12, 2009, 07:39 PM
Mr Sal
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95 Toyota Avalon Electrical System instantly died

My 95 Toyota Avalon xls just died--about 140K miles. A month ago the electrical system began been acting up insofar as the clock and temperature sensor displays began fading in and out--flashing dim. I didn't notice any other problems, and no fuses were at issue. Then, a few weeks later the radio/cassette began making loud buzzing sounds, then turned itself on and off several times. Over the next few days, it occasionally came on by itself (with a loud buzzing pop and hiss) and then after a few more times it died out fully. Again, no fuses were bad. Finally, the clock and temperature sensors finally stopped working about a week ago. NOW for the question.

I went outside today and after opening the doors remotely with the Toyota FOB, I tried to start the engine and the starter engaged for half a second and then everything died electrically, in an instant. No clicks, no lights, no nothing. The battery is new, so that shouldn't be the problem, and I am fairly experienced with batteries so I know how they work and fail. Any ideas? I see what look to be non-user accessible fuses? behind the main fuse box, but it appears one would have to take the panel off. Is this worth a try? Are there fuses like that which control everything like a main disconnect? I hate to bring the car in if there is something I have a real chance of being able to attempt to fix on my own and if there were something like that it would probably be cheap. At this point, if I must have the vehicle towed to move it, but it is safe in my driveway. Anybody have any advice? Thanks in advance.

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Old Jul 12, 2009, 08:17 PM   #2  
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. Remove and fully charge the battery. You need to establish, for a fact, that the battery is good. AutoZone will do this for free, if you don't have a battery charger.

. Test all under dash and under hood fuses with a test light or multimeter:

http://www.askmehelpdesk.com/cars-tr...tml#post252145
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Old Jul 12, 2009, 08:54 PM   #3  
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Possibility is the battery ground cable or loose connections at any battery termination point.
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Old Jul 13, 2009, 05:41 PM   #4  
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A bad alt can put a large parasitic draw on your new battery. From what you described in the events leading up to this, I'd have to say the diodes have gone bad in you alternator and it needs replacing.
I also agree with KISS.
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