What model corolla?
Anytime a battery cable is removed from the battery the radio will need to have the clock reset and the radio stations re-programmed. (Helpfull)
You could accidentally short out the power wire to the radio and blow a fuse. But you really do not have to disconnect the battery terminal. Just remove the fuse for the radio circuit and you will be fine.
Check your fuse panel for a blown radio fuse.
The radio doesn't have a battery. It uses the vehicle electrical system / battery. If the power to the radio is interrupted, you will have to reenter the presets. Make sure the fuses for the radio are not blown.
What is the radio unlock code for a 1993 toyota corolla
There are several problems that can cause a Corolla not to start and the radio or clock not to work. These problems can include a dead battery, faulty ignition switch, or a short in the electrical system. You can use a digital volt meter to test for these problems.
Yes. If you disconnect the battery from the vehicle what happens is that the anti theft system on the radio thinks the the radio is being stolen because it loses power. What you have to do is enter a code that is provided to you by the dealership. If they don't have the code on record then the dealer has to remove the radio to find out the code.
It seems like your radio is damaged. You can try to reset the system by taking out the battery, if the radio is in your car.
Disconnect the neg battery cable then take the bolts and wires loose from the back of the radio under the dash. Then pull the knobs off and remove the nuts there and work the radio out of the back of the dash.
Depends on the vehicle you're asking about which you did not list.
There is no way to disable the theftlock really. You can google it, and find out the password for your radio, and then change your battery, and then enter the code.
If the radio is not working in a 2005 Toyota Corolla the wire harness may be damaged. The radio fuse may also be damaged and should be checked as well.