Yes, just replace the battery. It will not harm the computer (ECU) and you will only have to reset the radio presets and the clock.
Assuming you are talking about the car's computer, you shouldn't have to reprogram anything besides your radio station presets and your clock.
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.
Unpluging the battery from any car newer that 1995 will reset the radio, clock, the OBC or as many people know it as the computer. It will also reset the engine codes to zero.
Starts the engine. Turns on lights and radio.
Starts the engine. Turns on lights and radio.
Two small spring loaded handles are on the sides of the radio. Push them in and they will spring out. Pull on them and the radio comes out. Disconnect the cables and the radio is free. You must have the code for that particular radio or it will not be functional when reconnected or when battery is reconnected (loss of memory storage in computer)
You have enough battery power to power the radio, but not enough to turn over your engine. CHeck battery.
If the engine is running fine and you disconnected the battery recently then don't worry about it. To clear the check engine light and the code’s you can do one of two thing’s. One pull the negative battery post off the battery for 30 second’s. This clears the computer codes and the light. However it also clears your radio presets and clock. Another way is to pull the fuse labeled “Fuel Pump”. This fuse is in a box under the hood behind the battery (See photo to the left), Should be the only yellow 20AMP fuse in there. This fuse also disconnects power to the PCM "computer" as well “ Kind of a secret to the general public” Just leave this fuse out for 30seconds or so. Then replace. This will keep your clock and radio presets. The engine might be a little hard to start or die the first time since the computer has to relearn everything again
I worked on an 89 and what I did was unhook the negative connection to the battery and leave it off for 15 minutes. The reconnect it. You will need to fix the time and radio channels but normally the computer is reset
go to radio shack
Electronic engine, resets PCM ECU and the keep alive memory, not harmful because the computer will "re-learn" everything about your engine and no programming will be necessary Carbureted engine resets radio
Depending on what engine you have, it may be on the right side of the engine compartment, to the rear of the engine, or firewall side; or, it may be on the front of the engine. First step of course, disconnect the battery NEG/ground side of the battery cables to eliminate hazard; however, this will also reset your clock, radio, or other memory settings.