The battery of your car is a wearing part, it is generally considered that it will have between 5 and 6 years of life span. You may have found yourself one morning with a dead battery and not being able to turn on your Mercedes Classe B 3. And in many instances this is caused by a battery that no longer stores energy. So in this case, how do I disconnect the battery from my Mercedes Classe B 3? Precisely, our team has created this article in order to help you do this common task safely. First of all, we will give you some suggestions on how to do it safely, and then we will put it into practice and how to disconnect the battery on your Mercedes Classe B 3.

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How to disconnect the battery on my Mercedes Classe B 3: A few tips

Firstly, before tackling how to disconnect the battery from your Mercedes Classe B 3, we will give you a few tips on how to do this process safely and save you from wasting time, some of them will certainly seem to be evident to you, but you can never be too mindful :

  • Before doing anything on your car, you must always place it on a flat surface with the hand brake on to prevent any movement of the Mercedes Classe B 3.
  • The battery in your car is an energy accumulator, and can potentially deliver a deadly charge to humans, so you will need to remember to turn off your vehicle’s ignition and remove any jewelry or metal objects you may be wearing to ensure you take as little risk as possible.
  • Moreover to being filled with energy, the battery will be filled with acid, a very corrosive chemical substance that can do a lot of damage to your skin. As a precaution, wear rubber gloves and goggles to protect you from splashing.
  • Finally when you go to the section how to disconnect the battery on your Mercedes Classe B 3, don’t touch the two terminals of your battery, you might cause a short circuit with your body as a conductor.

How to disconnect a battery on my Mercedes Classe B 3: Take action

Let’s start now, the section that certainly brings you here, how to disconnect a battery on your Mercedes Classe B 3. So, after having taken all the measures we described just before, you will finally be able to attack the removal of the battery from your car. For this, it will be quite easy. First you will have to take out the plastic covers that protect the terminals of your battery. Verify the state of your terminals, if they are oxidized or very dirty, we recommend you to use a soft wire brush and baking soda to clean them before disassembling. Once the cleaning is conducted, you will first have to remove the negative battery terminal of your car using a nut and bolt (this is the black cable with a “-” sign), always in this direction as it is connected to the car chassis, if you first remove the positive terminal (red cable with a “+” sign) and touch a part of the chassis, it would provoke a short circuit. Now you can disconnect the positive terminal of the battery from your Mercedes Classe B 3. Once both terminals are disconnected, you can commence the last step, disconnect the battery from the engine compartment of your car. To achieve this, you just have to remove the rod and the clamp, in most cases held by a nut or a torx bolt, and take it out of its place. Be careful though, a battery weighs very heavy, be careful and forceful, and also think about take it out vertically to steer clear of any acid leakage. That’s it, you have just learned the methodology for how to disconnect a battery on your Mercedes Classe B 3, if you respect all the safety recommendations, everything should go well. If you want to learn how to safely reconnect your battery, check out this article, and if you want more information about your Mercedes Classe B 3, we have a directory of articles dedicated to your car.

If you need more guides on the Mercedes Classe B 3, go to our Mercedes Classe B 3 category.