With winter months coming, vehicles often suffer, the most common scenario is to have difficulties starting your Mercury Grand Marquis early in the day with very low temperatures. Generally this is related to problems recharging the battery of your Mercury Grand Marquis . There are some causes that can show you why your battery does not recharge correctly anymore, and today we will try to help you to fix this problem that can prevent you from using your car. To achieve this, first we will show you how recharging your car battery works, then the different problems of recharging a Mercury Grand Marquis, and at last how to recharge an empty car battery.

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How does recharging the battery of a Mercury Grand Marquis function?

Before we detail the different problems of recharging the battery on a Mercury Grand Marquis , we will show you to you how its recharging system operates so that you can understand the problems you are facing. A car battery works like a phone battery, it will store energy to start your Mercury Grand Marquis , turn on your headlights, enjoy music, lower your power windows… However all these actions will consume energy and it might deplete the energy reserve that your battery can store. To get over this problem, the engineers have designed a element called the alternator , this element will use the energy developed by the engine of your Mercury Grand Marquis to create energy thanks to a copper coil and a magnet. This energy will recharge the battery of your car . However, keep in mind that this process can only work when your car is running, using electrical components of your car when it is stopped will decrease the energy reserve of your car. It is considered that a battery of a xxx has a life span of 3 to 5 years.

Problems recharging a Mercury Grand Marquis’s battery

We will now describe the different battery charging problems on a Mercury Grand Marquis you may be victim of. If your battery is not recharging because there is actually a problem in your electrical installation, we will now see the different cases.

Battery charging problem on Mercury Grand Marquis: My battery is discharging regardless if I am recharging it with a particular charger

In this first circumstance, it is quite possible that your alternator is dead , indeed, if you manage to recharge your battery with a charger and your Mercury Grand Marquis to start, the problem most certainly comes from your alternator which should not be able to create any more current.

Battery charging problem on Mercury Grand Marquis: My car shuts off and does not start regardless if I have charged the battery

If you have recharged your battery and you have managed to start your Mercury Grand Marquis but it switches off although you are driving and then does not start, the trouble with recharging the battery of your Mercury Grand Marquis is that your battery no longer holds the charge .

Battery charging problem on Mercury Grand Marquis: My battery is discharged nevertheless it is new

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If you’ve just bought a battery and it discharges although you’re driving, the problem most likely comes from your alternator. It cannot originate from your battery, which is new and consequently holds the charge. The second opportunity is that you have a ground somewhere in your electrical system.

How to fix the problem of battery charging on Mercury Grand Marquis?

We will now give you the solutions according to the problem you are facing. Here are the different problems and their solutions:

  • Defective alternator: You can try with basic mechanics to check it with a pressure gauge to see if it’s producing power. If it doesn’t, changing it is the best remedy, depending on your motor you will pay a few hundred euros. This repair is feasible in the event your alternator is accessible.
  • Battery that no longer holds the charge: In this case, the purchase of a new battery is the only realistic remedy. In truth, if you have already recharged it but it is still empty because it is good to be changed, count between 60 and 100 euros depending on your engine.
  • Ground in the electrical circuit: If you cannot start your Mercury Grand Marquis but your alternator and battery are in good condition, it is possible that you have a ground on your wiring harness and that you lose energy, a check by a car electrician is in such a case required.

How to recharge an empty battery of a Mercury Grand Marquis

Finally, to recharge the empty battery of a Mercury Grand Marquis there are only few solutions, using a battery charger is the most efficient remedy, you can locate some for 50 to 100 euros at vendors like Oscaro. Otherwise you can use cables that will only provide the energy needed to start.

In the event that you have any additional questions about the Mercury Grand Marquis, do not hesitate to consult our Mercury Grand Marquis category.