On the Toyota, there must be some type of memory that retains the settings. Realizing that I was probably very fortunate, when the terminals corroded for the third time due to battery outgassing, I had my independent shop that keeps up to date on these things install a new battery. The radio retained its settings and the car started and ran as it should. The second time I had to clean the terminals, I did the same procedure, but I forgot to turn the key to the accessory position, so no current was fed to the electrical system. The only problem that occurred was that the clock had lost time and had to be reset. The first time, I remembered to turn the key to the accessory position so that the 12 volt socket would be connected to the electrical system of the car. I purchased the device that plugs into the 12 volt socket and then disconnected the terminals. I had to disconnect the battery on my 2011 Toyota Sienna because the terminals showed a lot of corrosion. The only thing the interface indicates is the time, which is incorrect.Īre there any hypotheses as to why my car radio is now inoperable? And are there any suggested solutions for resolving this? I looked up the security lockdown item in the manual, and it explicitly noted that if this were to be the case, the interface would clearly indicate the word “LOCKED.” The interface does not indicate this. or, the removal of the battery triggered a security lockdown on the car radio that requires a code to be inputted to make it operable again. After doing some research, I came up with two scenarios to look into: The clock on the radio interface had been reset to 12:00 when they disconnected the battery, but I could not reset the clock to the appropriate time after installation. After they installed it, my car radio would not turn on at all. I went to Sam’s Club last weekend to purchase a new battery for my 2008 Chevy Equinox and have it installed.
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