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I have the same problem now. I found, so far, that the glove compartment was not closing properly and the light was staying on draining the battery. The battery may also be in borderline condition.%DETAILS

AnswerI had the same problem a few years ago with an '83 Buick. The problem was in the computer, and I had to have it replaced. You've definitely got a short somewhere. Sometimes you can take a volt meter that will measure a drop in voltage, you can hook it to the battery, and then start pulling fuses one by one. When you pull the fuse on the grounded circuit you'll see a voltage increase at the battery. When you plug it back in you'll get a voltage drop. At least that way you can isolate the circuit. If it's in the computer though you may not see a drop at all in any of the circuits. Answerhello

The battery is discharging because one or more of the accessories is staying on even after you have remove the key.

One of the easiest ways to find the problem is to disconnect the negative battery cable and connect a 12 volt test light between the negative battery pole and the negative battery cable. Check to see if the light is ON. If yes. pull out each fuse one by one and check to see if the test light goes out. when it does go out you have almost found your problem. it could be in the wiring or it could be the accessory.

you outsee ya

AnswerCheck for a short in the alternator. AnswerThe light in the trunk or under the hood has a level sensitive switch. If this switch is not working it will leave the light on. AnswerThe rear window defroster stayed on constantly on my Merc.I tested it by pulling fuses one at a time with the engine off and looking for a small spark.
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โˆ™ 2015-07-14 15:06:10
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Q: Why would the battery discharge when the car is off on a 1984 Mercury Marquise?
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Related Questions

Does a car battery have mercury in it?

No, a car battery does not have mercury in it. It would be very dangerous to have mercury in a car battery.

Why would a battery discharge for no apparent reason?

Either something is on and is drawing current from the battery or the battery itself has a dead cell which will drain the battery. If the battery is over 3 yeas old, replace it.

Would a bad solenoid discharge the battery?

If the defect is causing a parasitic drain, yes.

What would cause a battery to drain in a 1989 mercury sable if it is not the power cords or alternator?

dead cell in the battery or something is on pulling power from the battery.

If a 12 volt 18 amp hour battery is installed in a circuit with a continuous 1 amp current draw on the battery what would happen?

would discharge in 18 hours

Why would the battery light be on on a 1998 Mercury Tracer?

Needs new alternator.

What does 1994 Saturn SL2 dashboard battery warning light indicate?

It typically indicates that the alternator has failed and is no longer charging the battery. Once that happens, the battery will slowly discharge and the vehicle will no longer start. The battery is simply an electrical storage device and if the alternator is unable to replace the electrical energy used LAST time the vehicle started, the battery will discharge. Automotive batteries are not designed for "deep discharge", meaning that if you allow your battery to discharge too much you are causing harm. Once the warning light comes on it would be wise for you to take care of the problem as soon as possible.

What would cause a 1998 Mercury Villager to start only with a jump?

Dead battery? Battery cables in need of cleaning or replacement?

What causes a car battery to drain on a mercury sable?

A car battery in any car would drain due to a short in the electrical system.

Why does my mercury grand marquis2002 sometimes starts and then won't start?

I would first have the battery checked. It sounds like a weak battery. It could also be the computer. In fact, there are a number of possibilities but the first thing I would check would be the battery.

What size battery for a 75 hp mercury outboard?

The 75 hp Mercury outboard will need a starting battery in the 650 CCA range, although, up to 1000 CCA would work just fine.

What would make a car discharge besides the battery and alternator?

All of a vehicle's electicity using devices drain/discharge the battery, but during the time the engine is running, the alternaror is supposed to keep the battery recharged. If the engine IS running, but the alternator is NOT providing enough current to recharge the battery then ALL of the electricity using devices discharge the battery. Some of the "onboard" computers draw some slight amount of power even when the ignition switch is off, but they do not use enough power by themselves to significantly discharge the vehicle battery. Any electricity using device which SHOULD be turned off when the ignition is off, BUT... which due to some fault [such as a "stuck" relay for example] that keeps that device still turned on when the engine is not running and the key is off will also discharge the battery. Or, just leaving the ignition switch on without the engine running, or the headlights or parking lights on, or sound equipment left on will contribute to discharge of a vehicle's battery.

Why would a low battery cause a 2007 mercury marquis become hard to steer?

Because whoever told you that a low battery would cause hard steering is an idiot.

What would cause the battery to not charge even when the alternator tests good on a 93 Mercury Cougar?

the battery could have a dead cell, this could cause it to not charge. Have the battery tested to be sure.

What would cause the battery light to constantly stay on on a 1997 Mercury Sable?

Battery Light OnCheck for bad alternator. alt. is goodbattery is goodchecked fues goodwhat about wiring

What is the scientific name or taxonomic classification of the Rose flower Marquise Boccella?

The scientific or taxonomic name would be Rosa 'Marquise Boccella'.

Can a capacitor store electric energy from a wind mill to discharge into a storage battery?

Yes, but it would not be cost effective. The battery has more "capacity" than a capacitor. Best to simply charge the storage battery directly from the wind mill.

What would cause a battery to discharge overnight on a 1986 Pontiac parisienne?

I'm not sure if this may be YOUR problem but when I was having my battery discharge on me, I ended up disconnecting the passengers electric seat. Again, I'm not even sure if that was the problem or if it's your problem either, but it seemed to work for mine.

Does marquise have rotational symmetry?

Are you referring to the Marquise Cut in Diamond jewelry? This is in the shape of a pointed oval; it would two-fold rotational symmetry.

Why is my 2004 Mercury Monterey make a clicking noise and won't start?

I would suspect the battery has been discharged, is defective, or you have loose or corroded battery terminals. Remove and clean the terminals and if that does not solve the problem charge the battery with a battery charger. If it will not take a charge then replace the battery.

Where is relay located for front blower on 99 mercury villager?

It would be in the relay box under the hood near the battery.

What would cause the battery gauge in a 94 mercury cougar to go down when idleing but when you push the gas it shoots back up?

Its a sign that either your battery or alternator is starting to fail.

Would a bad alternator on a 1999 Grand Cherokee Jeep Limited keep discharging a brand new battery?

=== === Some types of electrical shorts do cause the battery to discharge. But usually a bad alternator just does not charge the battery. Or does not put a large enough charge back into the battery. This causes the battery to discharge when you start and run the motor. The spark plugs and other things need electricity that would usually come from the alternator is now coming from your battery. If your bad alternator is not recharging the new battery, the battery will soon fail to start or run your vehicle. You need to have your alternator tested. It should be putting out at least 12 volts, usually around 13 to 15 volts.

Why would a Mercury Sable lights start flashing and horn start blowing when temp is close to freezing?

Needs a new battery.

Would a battery in which both metals components are copper make a good battery?

Only if you could develop a battery chemistry that (similar to the Lead Acid battery) corroded one copper plate during charging and not the other, without generating lots of hydrogen gas, and was reversible during discharge. I have never read of any such battery chemistry. I'd have to say no.