With wintertime coming, automobiles often suffer, the most common case is to have difficulties starting your Bmw Serie 3 in the morning with very low temperatures. In general this is related to problems recharging the battery of your Bmw Serie 3 . There are some factors that can explain why your battery does not recharge effectively anymore, and today we will try to help you to fix this problem that can prevent you from using your motor vehicle. To get this done, first we will explain how recharging your car battery works, then the different problems of recharging a Bmw Serie 3, and finally how to recharge an empty car battery.

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How does recharging the battery of a Bmw Serie 3 work?

Before we detail the different problems of recharging the battery on a Bmw Serie 3 , we will explain to you how its recharging system works so that you can discover the problems you are struggling with. A motor vehicle battery works like a phone battery, it will store energy to start your Bmw Serie 3 , 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 overcome this problem, the engineers have developed a element called the alternator , this element will use the energy developed by the engine unit of your Bmw Serie 3 to generate energy thanks to a copper coil and a magnet. This energy will recharge the battery of your motor vehicle . However, bear in mind that this process can just work when your car is running, using electrical elements of your motor vehicle when it is stopped will drain the energy reserve of your motor vehicle. It is considered that a battery of a xxx has a life span of 3 to 5 years.

Problems recharging a Bmw Serie 3’s battery

We will now describe the different battery charging problems on a Bmw Serie 3 you may be victim of. If your battery is not recharging because there is necessarily a problem in your electrical installation, we will now see the different cases.

Battery charging problem on Bmw Serie 3: My battery is discharging even 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 control to recharge your battery with a charger and your Bmw Serie 3 to start, the problem certainly originates from your alternator which should not be able to generate any more current.

Battery charging problem on Bmw Serie 3: My motor vehicle shuts off and does not start even if I have charged the battery

If you have recharged your battery and you have managed to start your Bmw Serie 3 but it switches off although you are driving and then does not start, the problem with recharging the battery of your Bmw Serie 3 is that your battery no longer holds the charge .

Battery charging problem on Bmw Serie 3: My battery is discharged although 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 originates from your alternator. It cannot result 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 Bmw Serie 3?

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

  • Defective alternator: You can try with basic mechanics to verify it with a pressure gauge to discover 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 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 remedy. 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 Serie 3 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 verify by a motor vehicle electrician is in such a case required.

How to recharge an empty battery of a Bmw Serie 3

At last, to recharge the empty battery of a Bmw Serie 3 there are just few solutions, using a battery charger is the most efficient remedy, you can locate some for 50 to 100 euros at vendors like Oscaro. In any other case you can use cables that will just provide the energy needed to begin.

In the event that you have any further questions about the Bmw Serie 3, do not hesitate to consult our Bmw Serie 3 category.