I am not a professional, but an avid Explorer owner (I am on my third). What you are describing sounds like it might be as simple as a headlight relay. Sometimes, the contacts stick together, causing the circuit to remain energized. In other cases, relays coils may fail, causing a "normally open" circuit to become closed. This is usually the case with cars that have alarm or remote entry systems where lights are flashed upon activation, regardless of the headlight switch position. Just a thought.
It does no harm to disconnect the battery when working on a vehicle but in general no, you do not need to disconnect them to change a filter.
Disconnect the negative cable.
Headlights should not be left on while the vehicle is not in use. If you are not driving, you will just drain your battery while having your headlights on.
Disconnect the car battery, and reconnect it
If you are talking about disconnecting a battery in a vehicle, yes.
Without written permission from the NHTSA is is illegal to disconnect the air bag on any vehicle.
Disconnect the battery. Alternatively you could run a wire from the ligter of the towing vehicle to the battery of the towed vehicle.
Disconnect battery from vehicle - if this still happens battery is probably shorted internally and requires replacement
Start the vehicle then disconnect the battery. If the motor dies, you probably have a bad alternator.
Headlights, radio, ignition, and other elec accessories. Also turns starter to start vehicle but they replenish battery when running via alternator
A vehicle alternator keeps the battery charged It allows you to use the vehicle accesories while driving ( headlights , radio , etcetera )
Not sure on the disconnect part, but after you start the truck, push your dome light on and off 4 times, you will hear it chime, the daytime running lights will then be out. But you gotta do it each time you start the vehicle....
Disconnect - battery terminal Raise and support vehicle Disconnect wiring harness at top of starter Remove mounting bolts Remove starter
You can disconnect the battery, but that sort of defeats the driving purpose of the vehicle. Typically, WikiAnswers does not provide information that can used for illegal purposes.
Disconnect the neg. cable from the battery. Raise the vehicle. Disconnect the battery cable from the starter motor. Remove the starter mounting bolts. Installation is the reverse of removal. GOOD LUCK!
Disconnect battery for about 10 mins. or have vehicle scanned to determine problem and have code cleared
unplug the control module fuse and disconnect the battery for 5 minutes.
So any spilt fluid will not connect the terminals.
Battery is probably old or weak or too small for the vehicle, having the lights on would drain on the battery affecting its overall cranking amps
Disconnect the - battery cable Raise and support vehicle Disconnect wiring a the top of starter Remove starter mounting bolts Remove starter
Disconnect the - battery cable Raise and support vehicle Disconnect wiring at top of starter Remove mounting bolts Remove starter
Depends on the vehicle, but in general, you disconnect the battery first, then disconnect wires at the starter, then the 2-3 mounting bolts. It's usually very simple.
Disconnect the - battery terminal Raise and support vehicle if neeeded Disconnect wiring from starter Remove mounting bolts Remove starter
The 2002 Ford Explorer Sport Trac owners manual shows : Motorcraft BXT - 65 - 650 ( Ford's " top of the line " battery for your vehicle )