With cold weather coming, vehicles tend to suffer, the most basic scenario is to have difficulties starting your BMW 7 Series in the morning with very low temperatures. Generally speaking this is associated with problems recharging the battery of your BMW 7 Series . There are some factors that can show you why your battery does not recharge effectively anymore, and in this article we will try to help you to fix this problem that can prevent you from using your car. To get this done, first we will show you how recharging your car battery works, then the different problems of recharging a BMW 7 Series, and at last how to recharge an empty car battery.
How does recharging the battery of a BMW 7 Series work?
Before we detail the different complications of recharging the battery on a BMW 7 Series , we will show you to you how its recharging system works so that you can understand the complications you are facing. A car battery works like a phone battery, it will store energy to start your BMW 7 Series , turn on your headlights, enjoy music, lower your power windows… Nevertheless 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 developed a component called the alternator , this component will use the energy produced by the engine of your BMW 7 Series to generate energy thanks to a copper coil and a magnet. This energy will recharge the battery of your car . Nevertheless, bear in mind that this process can just work when your motor vehicle is running, using electrical elements of your car when it is stopped will drain 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 BMW 7 Series’s battery
We will now describe the different battery charging complications on a BMW 7 Series you might be victim of. If your battery is not recharging because there is necessarily a problem in your electrical set up, we will now see the different situations.
Battery charging problem on BMW 7 Series: My battery is discharging regardless if I am recharging it with a specific charger
In this first circumstance, it is quite possible that your alternator is dead , indeed, if you control to recharge your battery with a charger and your BMW 7 Series to start, the problem most certainly comes from your alternator which should not be able to generate any more current.
Battery charging problem on BMW 7 Series: My car shuts off and does not start regardless if I have charged the battery
If you have recharged your battery and you have been able to start your BMW 7 Series but it switches off although you are driving and then does not start, the problem with recharging the battery of your BMW 7 Series is that your battery no longer holds the charge .
Battery charging problem on BMW 7 Series: 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 probably comes from your alternator. It cannot originate from your battery, which is new and therefore holds the charge. The second possibility is that you have a ground somewhere in your electrical system.
How to fix the problem of battery charging on BMW 7 Series?
We will now give you the solutions according to the problem you are facing. Here are the different complications and their solutions:
- Defective alternator: You can try with simple mechanics to check it with a pressure gauge to discover if it’s producing power. If it doesn’t, changing it is the best solution, depending on your motor you will pay a few hundred euros. This fix is feasible in case your alternator is accessible.
- Battery that no longer holds the charge: In such a case, the purchase of a new battery is the just realistic solution. In truth, if you have already recharged it but it is still empty because it is good to be replaced, count between 60 and 100 euros depending on your engine.
- Ground in the electrical circuit: If you cannot start your BMW 7 Series 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 BMW 7 Series
Finally, to recharge the empty battery of a BMW 7 Series there are just few solutions, using a battery charger is the most efficient solution, you can discover some for 50 to 100 euros at vendors like Oscaro. Otherwise you can use cables that will just provide the energy needed to begin.
Whenever you have any additional questions about the BMW 7 Series, do not hesitate to consult our BMW 7 Series category.
