It's probably a stuck relay.
Disconnect the negative battery cable.
Yes, you better disconnect the negative battery cable.
Disconnect the negative cable first and reconnect the negative last.
Disconnect the negative battery cable for about a minute Disconnect the negative battery cable for a minute or so
You have to disconnect the negative cable from the battery.
negative first
Disconnect the negative cable first when disconnecting a car battery
Disconnect the negative battery cable.
Disconnect the negative cable first when disconnecting a car battery
Always disconnect the negative cable first and reconnect the negative cable last. Do this and you won't get into trouble.
Disconnect the negative cable first and connect the same negative terminal last when installing the new battery.
Typically, you just disconnect it, unbolt any retaining bolts, and pull it out. Always disconnect the negative cable first when removing a battery and reconnect the negative cable last when installing a battery. The pertains to a negative ground system only.