The battery of your car is a wearing part, it is commonly considered that it will have between 5 and 6 years of life. You may have found yourself one day with a dead battery and not having the capability to turn on your smart forfour. And often this is brought on by a battery that no longer stores energy. So in this case, how do I disconnect the battery from my smart forfour? Precisely, our team has made this content in order to help you carry out this basic procedure safely. First, we will give you some hints and tips on how to do it safely, and then we will put it into practice and how to disconnect the battery on your smart forfour.

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How to disconnect the battery on my smart forfour: A few tips

First of all, before dealing with how to disconnect the battery from your smart forfour, we will give you a few hints on how to do this operation safely and save you from wasting time, some of them will absolutely sound obvious to you, but you can never be too cautious :

  • Before doing anything on your car, you must always place it on a flat surface with the hand brake on to avoid any movement of the smart forfour.
  • The battery in your car is an energy accumulator, and can potentially generate a deadly charge to humans, so you will need to bear in mind to turn off your vehicle’s ignition and remove any jewelry or metal objects you may be wearing to make sure you take as little risk as possible.
  • Furthermore 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 preventative measure, wear rubber gloves and goggles to protect you from splashing.
  • To finish when you go to the step how to disconnect the battery on your smart forfour, don’t touch the two terminals of your battery, you may cause a short circuit with your body as a conductor.

How to disconnect a battery on my smart forfour: Take action

Let’s begin now, the part that absolutely brings you on this page, how to disconnect a battery on your smart forfour. So, after having taken all the measures we listed just before, you will finally be able to start the removal of the battery from your car. To do this, it will be very simple. First you will have to take off the plastic covers that protect the terminals of your battery. Observe the state of your terminals, if they are oxidized or very dirty, we advise you to use a soft wire brush and baking soda to clean them before disassembling. Once the cleaning is completed, 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 way as it is connected to the car chassis, if you first remove the positive terminal (red cable with a “+” sign) and touch a portion of the chassis, it would trigger a short circuit. Now you can disconnect the positive terminal of the battery from your smart forfour. Once both terminals are disconnected, you can begin the last step, disconnect the battery from the engine compartment of your car. To accomplish this, you just have to remove the rod and the clamp, commonly held by a nut or a torx bolt, and take it out of its place. Take care though, a battery weighs very heavy, be careful and forceful, and also think about take it out vertically to avoid any acid leakage. That’s it, you have just learned the method for how to disconnect a battery on your smart forfour, if you follow all the safety guidelines, everything should go well. If you want to find out how to safely reconnect your battery, check out this content, and if you want more information about your smart forfour, we have a directory of articles dedicated to your car.

If you wish more guides on the smart forfour, go to our smart forfour category.