I changed the battery and now the alarm wont go off (Camry LE 2012)

Asked by GuruDZWHCR Nov 22, 2023 at 05:29 PM about the 2012 Toyota Camry LE

Question type: Maintenance & Repair

My alternator died, I replaced it, and used a fully functional, albeit different battery to start my car, the car starts normally, but the alarm wont go off, also cant shut it down using the fob

4 Answers
310,085

Gene answered 11 months ago

Messed up the BCM cause you didn’t use the saver tool that plugs into the OBD2 port before disconnecting main power supply. Now the dealer will have to flash the systems to get things back to normal.

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157,505

James answered 11 months ago

You should have plugged in a memory saver device to the vehicle before you disconnected the battery. Now you have to be towed to your local Toyota Dealer to have the computers flashed (reprogrammed). Jim

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