Bad Alternator or the Battery possibly is losing voltage. I replaced the alternator and serpentine belt before thinking it was the battery. The battery was only 16 months old. But it turned out to be the bad source.
Disconnect the battery for about an hour, then hook it back up. If it comes back on, something is wrong.
The check engine light on a 2002 Ford Focus can be reset by disconnecting the battery for 1 to 2 minutes. This resets the vehicle's computer and clears the light.
What type of battery do i need for a 2002 ford focus
alternator is not charging battery, or loose - corroded connection on battery cables
Most cases the battery light comes on because the alternator isn't charging. The alternator may need replaced as well as the battery. It may be something more simple as a poor connection.
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alternator belt.
In a 2002 Isuzu Axiom, the battery warning light is located on the instrument panel, typically among the other warning lights. It usually resembles a battery symbol or the word "BAT." If this light illuminates while driving, it indicates a potential issue with the charging system, such as a failing alternator or a weak battery. It's advisable to check the vehicle's electrical system promptly if the light comes on.
To turn off the battery light on the dash of a 2002 Ford Focus, first, ensure that the battery is charged and the alternator is functioning properly. Check the battery connections for any corrosion or looseness, and tighten or clean them if necessary. If the light persists after confirming these issues, it may indicate a problem with the charging system, and you should consider having the vehicle inspected by a mechanic. Simply resetting the light without addressing the underlying issue is not advisable, as it may lead to further electrical problems.
You will have to disconnect the battery for 10 seconds or more to reset the computer, then reconnect the battery and check if the light is off and remains off , if the light comes back on I would take to mechanic and have it scanned for trouble codes.
fuse number for 2002 ford focus
When the battery light is on. That means your charging system isn't working. You should have your system check. It will drain your battery.
There is no reset for the battery light. If the light is on there's a problem with the electrical system and once the problem is repaired the light will automatically go out.