Question about 2008 Toyota RAV4

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I had a store repair shop install a new battery in my 2008 Rav4 V6 Limited. During the install, the alternator fuse blew and they apparently had a very difficult time accessing the fuse box and locating the correct fuse. When I picked up the vehicle, the 4WD yellow warning light was lit and stayed on through driving and several restarts. No other warning lights were on. The repair shop could not find an engine code and neither could Autozone. The vehicle ran fine before this and seemed to drive fine afterward. I plan on taking it to the dealership once the weekend is over. The owner's manual states to turn my engine off and let the drive train cool off, but my car was cool to begin with. What did they do to my car? Is it safe to drive with this light on?

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  • tschatteman Oct 20, 2013

    Thanks for your helpful comments. It turns out that mekanik84 was right. I spoke to the shop manager today and he admitted that the mechanic had indeed switched the terminals during the installation. I have a feeling that they blew more than one fuse because they worked on my car for over 6 hours and told me that they checked every fuse. I will pass on the suggestions by Marc99GT to their mechanic when I bring it back tomorrow. I'm hoping that the damage was limited to just fuses.

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Battery been disconnected PCM and TCM need to relearn vechicle most time during few drive cycle vechicle return to normal operation.if warning light stay on let dealership check it out.

Posted on Oct 20, 2013

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Unfortunately it sounds as tho someone back boosted your car, so terminals on the wrong spots. I would push the installer of the battery to repair your problem or at least agree to cover any costs. On some vehicles computers, modules and other components can be damaged by back boosting a car

Posted on Oct 20, 2013

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Since they blew one fuse, it is possible they blew others as well. There is a 7.5A fuse that I believe powers the 4WD control module. It is in the instrument panel junction box cowl on the left. There is also a 10 amp fuse for the module ECU-IG1. It is located in the same box as the other fuse. I would check those 2. One other fuse I would check is the other 7.5A for the gauge related to the 4WD on the cluster, but I guess that is working since it appears on the cluster.

I hope that helps and good luck.

Posted on Oct 20, 2013

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