Question about 1998 Toyota Corolla

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1998 toyota crolla battery hooked up wrong, car starts but no acc

As it turned out the battery in my 1998 toyota corolla went bad. In the process of testing the problem I had taken the battery out from my toyota truck and put it the same way into the toyota not realizing that the terminals on the batteries were opposite. Hooked it up and the neg term was sparking. I didn't even realize right away what was going on until it stopped sparking and apparently caused a short. When I put a new battery in I discovered that the car will start up and run, but there's no power to any of the accessories such as power windows, locks, radio, turn signals. I think only the headlights turn on. I checked all the fuses, one 15 amp fuse which was bad I replaced, but that didn't fix the issue. Somebody mentioned to me about the relays, but other than that I have no idea what the problem is...any ideas ? thanks,

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  • mnanda108 May 21, 2009

    Thanks a lot for the feedback. I had located some relays in the fusebox under the hood. There's at least 2 of them that I'm aware of and I only know what it is because it says "relay" on the part, which is a small box about 1 inch -1.5 wide. Do you have any idea about how many of these relays there might be, or if there's a main one ?, cuz there's a few other different but similar little box parts like this in the fuse box , but don't have "relay" written on them.
    I had taken out the 2 with "relay" on them and brought them into Pep boys but the guy there wasn't really sure even how to locate the parts in stock. On the computer there was a really long list of all kinds of relays. And alot of them are pretty expensive. I'm hoping there's just one or 2 that need replacement and not several that I'm gonna have to buy them all and do a trial and error.

    Thanks, Mike



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I believe the reason the lights would still work is due to the fact a light bulb doesn't discriminate about polarity. It would be fair to say you have fried relays in your car. These should be located in something that looks like a fuse box in your engine bay. Some may also be in your fusebox. Hope this helps and good luck.

Posted on May 21, 2009

  • glendeal69
    glendeal69 May 22, 2009

    There is generally a relay for anything that draws in excess of 30A of current (headlights for example) to explain, a relay is a small switch that throws a larger switch. This is to stop your switches from burning out. I had a problem with my radiator fan, and used generic 30A relays from a scrap yard to rectify this problem. My advice would be to do the same, as store bought relays are expensive. Any brand will do really, so long as the rated amps match the old one. Although 30A is a fair guess if unsure.



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