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How to replace the battery in a BMW 328i Model? 

 September 24, 2021

By  Phil Borges

If you're reading this article, it's a good bet that your BMW battery is on its last legs. The good news here is that there's an easy way to replace the battery in most models of BMWs - and it doesn't involve opening up the car! You'll need some tools for this job, but once you have them all together, you'll be able to easily swap out the old battery with a new one in just minutes. Read on to learn more.

How to replace the battery in a BMW?

BMWs are some of the most reliable and classic cars on the road. The car is known for its sleek body, high-performance engine, and durable design. However, like everything else in life, a BMW will need maintenance to keep it running smoothly. One part that can break down over time is the battery.

Here are some instructions on how to replace the battery in a BMW 328i. But before proceeding, make sure that you are wearing some protective eyewear and gloves. It is always best to be safe than sorry!

Step 1: Once you have located the battery, remove the cover to expose the battery compartment.

Step 2: Take out the bracket on top of the battery that secures it in place. This is done by loosening the 2 bolts that hold the bracket. There's another retaining bracket at the bottom of the compartment, which you also need to remove. Use a 10mm socket wrench for this step.

Step 3: The next thing you'll do is to disconnect the negative (black) cable from the old battery by loosening its nut while pressing down at the same time. Make sure you do this carefully because there is a chance that any sparks will ignite gas coming out of the vent pipe. Then do the same procedure in removing the positive (red) cable. Removing the cables may require a bit of wiggling around, but be patient because it will work. Be sure to keep the cables away from the battery post once removed.

Step 4: Remove the battery but be careful when transferring it as the old battery may be heavier than you expect, but make sure to hold on to it tight and in an upright position.

Step 5: Once you have removed the old battery, it is time to install a new one. But, before placing the new battery, make sure that all terminals are clean and free from corrosion. If corrosion is present, you can remove it with a baking soda and water solution. Once the terminals are clean, insert the new battery in its place.

Step 6: Reconnect the positive cable first by re-tightening the nut clockwise until the cable is secure. Then do the same procedure with the negative cable.

Step 7: Reattach the retaining brackets and secure their bolts back in place by tightening them down well. Be sure that there are no loose bolts or nuts to ensure that the battery is secure. Replace the cover, and you're done!

What are the signs when the BMW needs a new battery?

There are a few signs that can you can watch out for to determine whether or not the battery needs to be replaced.

  • Dimming headlights is one of the most obvious signs that you can notice. If the dashboard lights dim when starting the car, it may also be an indicator of a bad battery or alternator system.
  • Another sign is if your car won't start. If the lights come on when you turn your key in the ignition, but it still won't start, there's a chance that the battery may be faulty.
  • If you hear a clicking noise from the starter, which doesn't change over time, it's possible that the battery is no longer able to hold a charge.

If any of these signs sound familiar to you, then give your mechanic a call and schedule an appointment to check your vehicle's battery.

How often should you replace the battery in a BMW?

The car battery can last from three to five years on average. But this will depend on factors like weather, usage, and the quality of your battery. It is best to check on this every few months or so by looking at the date printed on it or asking a mechanic for advice, as well as checking your car's manual for further information about recommended replacement dates.

Conclusion

The battery is a very important part of your BMW and needs to be replaced every so often. If the car's lights start dimming, it could mean that there is something wrong with the electrical system, which can lead to serious problems if not handled properly. In order to avoid having any future issues or delays in getting through a potential breakdown, you will need to change the battery as soon as possible. It is always best to schedule your battery a regular check-up so you can be sure to get the most use out of it.

About the author

Hi, I'm Phil Borges.. thanks for reading.. My wife says I can't shut up about batteries so to save my marriage I've started this blog .. where I'd be ranting about batteries! Please leave a comment if you have any questions, I'm happy to help!

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