I need to change the car battery in my 2002 540.
The battery is easy to locate and get to. Does look heavy though...
I just have a couple questions. Why is there 2 Pos Terminals and what is this vent that I have been reading about and how difficult is it to replace this vent?
Thanks in advanceChange a 2002 BMW 540 Car Battery?the vent is just a hose that vents any moisture out of a hole in your trunk. youll need a 10mm wrench or 10mm socket and ratchet. You only have to loosen the clamps around the terminals.
if the new battery doesnt have a charge, its a bad battery.Change a 2002 BMW 540 Car Battery?The 2 leads send power to the car and to the starter. One has a power cut out so in an accident it will disengage the battery power to the car. Just change it like normal. As for the vent make sure you buy a battery that has the vent on it. Look for a Deka battery. Or CAR-QUEST has them as well. You can get an interstate but you need to ask for the OE type not the universal fit.Change a 2002 BMW 540 Car Battery? Battery will weigh 50 - 80 lbs. Lots of lead.
2 positive terminals for 2 different power leads.
The vent is part of the battery and cannot be replaced. It vents excess hydrogen gas from the battery when charging. Hydrogen is a by-product of the chemical reaction going on inside the battery.
