Powerbuilt 648539 Computer Memory Keeper

This product worked great but it is important to note that many newer cars don't supply power to the 12V outlet unless the car is in accessory mode. To do so, turn the key until only the radio turns on. Then, while leaving the key turned, turn the radio off (using the power button on the radio). Also turn off all headlights, dome lights, etc... You don't want any of these things taking power away from the ECM and radio preset memory.

If you aren't sure if your car has this issue, try plugging in something like a phone charger and see if it supplies power to the phone while the key is off.

I had a 2004 Lexus GX470 that needed a battery. I purchased a new battery at BJs but they do not install, so that task fell on me. I was concerned about losing the codes on the radio, etc with a battery swap. This little device got me through the job nicely. No lost codes.

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When ever the batteies on various cars I own is disconnected, I have to reset all the data stored in the computers. I think that now when I have to do this, this Powerbuilt 648539 Computer Memory Keeper will make the process must simpler without the aggravation of having to readjust things.

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Item was defective upon receipt. Wish it worked but it didn't. Bought another from different seller. Good concept, poor execution in the quality assurance department.

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If you're tired of resetting your radio memory after service, then get one of these; best idea for the best price and so very simple to use, sorry I never had one before!!

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