Data saved in cmos ram cant recovered if ram crashes suddenly but in case bettery or power failler 1) dont eject the ram runddnly wait for halting .2) use alternative system for power .3)detach the ram and place it in another ram reading system and fatch the data.
Reboot with a good battery and instruct setup to restore the default settings. Setup has to autodetect the hard drive present, and than you will need to set the date.
it should, doesn't matter if battery is disconnected for 10 minutes or whole day
The negative battery cable from the battery.
Can you be more specific? Was your battery disconnected or did it lose it's charge? If you did not disconnect the computer, it would not need to be reconnected. If your battery was dead or disconnected, simply remove the positive battery cable for about 10 minutes and re-connect it. This should clear your code. Even if the code does not clear you should have no problems with the function of your car.
yes .... unless you want to be electricuted :P
You do not have to reset anything. but you should have the battery disconnected. and once you reconnect the battery it will reset your computer.
No, it will not shut off. Overcharging because the voltage regulator is defective.
Some computers store the time with the help of a small internal battery known as the CMOS battery. The small battery will keep the clock of the computer running even if power is disconnected. If the computer are disconnected for to long however, the battery will run out and the time and date will be lost. If you are having problems with the time and date of your computer you should check that this battery is still working properly.
Usually, disconnecting the battery cable is what resets your car's computer(s) ... typically reverting to "default" settings and (sometimes) clearing any trouble codes. Generally, there's no need to do anything after you've reconnected the battery. Some cars have "learning" modes that adjust various settings based on your driving style, and it might take some time for the computer to re-learn everything. But there shouldn't be a big difference. A few cars have language display settings (German/English, for example) that "toggle" from one to the other each time the battery is disconnected. The owner's manual should explain how this works.
To replace a mirror in a Toyota vehicle, first, the negative cable of the battery should be disconnected. Then, the mirror cover should be removed from the door panel carefully, and the wiring disconnected so the mirror can be replaced.
Don't have to take the battery out but it should be disconnected. Carefully disconnect the negative (usually black) battery cable from the battery. Be sure you do not let the connector end of that cable or the negative battery terminal touch anything! (I put a heavy-duty plastic baggie over the connecting end of the cable & secure it with a rubberband. No baggie ties!) If the free end of the cable, or the disconnected terminal, touches anything conductive it will short out whatever it touches & could cause hundreds (or thousands) of dollars of damage. It could even cause an explosion if there is hydrogen gas accumulated near the battery, serious injury, or even death. Once the negative battery terminal is disconnected, there should be no electricitity flowing anywhere, & it should be safe to change the fuse.
If all you did was disconnect and reconnect the battery, it should function as normal. That is, assuming you disconnected the ground (negative) first when you took the battery out and reconnected the positive side first when replacing the battery. If you didn't, there's a possibility you toasted your ECM.