It is possible that the lighting intended to illuminate your license plate does not work anymore. It is important to quickly find the cause of this failure because the license plate of your smart fortwo must always be visible, even at night, hence the importance of this lighting.

First of all, we must already know that this does not come not necessarily a fuse that could have grilled. You should know that there are other causes for this dysfunction, which we will discuss in a second part.

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Easily find the license plate light fuse of your smart fortwo

Using the operating instructions for your vehicle, identify the fuse box, which includes all vehicle fuses. In general, there are three options available to you on a smart fortwo.

  • Look at the driver's side, left above your legs
  • second option under the hood next to the battery.
  • Last option, under the glove box, by removing a plastic cover that protects the fuses.

Always thanks to this manual, identify the fuse controlling the plate light bulb which no longer works. You will be able to find aThe list of fuses for your smart fortwo and all the compatibility details at the end of your vehicle manual.

How to identify the license plate light fuse on your smart fortwo

Related find the fuse associated with the license plate light of your smart fortwo, it is useful to use the fuse diagram. The fuse diagram will help you find the position of each fuse, with its exact role. It therefore allows you to separate the multiple fuses of your smart fortwo, but also their multiple roles.

It is located inside the maintenance guide for your smart fortwo. If you don't have it, look on internet the diagram linked to your smart fortwo.

The fuse gives the opportunity to avoid overheating excessive wires in the event of a short circuit. It will therefore be the shield in the event of overheating which will prevent a potential outbreak of fire. From the moment everything has been checked (wiring, bulbs etc.) it is therefore necessary to check the state of the fuses of your smart fortwo.

When you have identified it, it must therefore be changed.

Replace the license plate light fuse of your smart fortwo

Switch off the ignition of your smart fortwo first, then take the fuse out of its housing by gently pulling it upwards with your fingers, or with suitable small pliers, without tightening. Please note that the filament at the top of the fuse must not be cut.
If the fuse is out of order (you will see this in black color or with cut filament), you must replace it with a fuse same amperage. This characteristic is written on it: you will recognize a number followed by the letter "A".

Once the new fuse is installed on your smart fortwo, test the faulty bulb: if it turns on and stays on, the problem is solved for your smart fortwo! If, however, it does not light up, check the condition of the new fuse in place.

If he didn't move, then the failure was not there. If on the other hand this fuse has once again wire rack, this means that there is a short circuit somewhere on your smart fortwo. In this case, we recommend that you go to a mechanic for a thorough examination.

In order to support you in your process, we have also written an article dedicated to fuses and their handling on a smart fortwo, this can probably help you:

- - Where is the fuse box on a smart fortwo

My smart fortwo license plate light problem

If finding and replacing your license plate light fuse hasn't changed the problem, you should consider it your bulb that's burned out.

Is it really a fuse problem on the license plate light of my smart fortwo?

In this case, simply replacing it will solve the problem on your smart fortwo. Do the test by replacing the bulb and see the result. If nothing changes, there are several options available to you.

If it's not the bulb, let's see the other types of problem:

In the first place, it is possible that your BSI box is incorrectly calibrated, and therefore that it no longer sends the power required for ignition. This one aims to send electrical signals to the various functions of your smart fortwo so that they are carried out. You have the option of doing a few simple and quick tests in the garage to test that they are working properly on your smart fortwo.

Bsi box problem on my smart fortwo: no more license plate lighting

Otherwise, if your BSI box works perfectly, make sure that no cable is worn. The same would result, the power would be cut off. You will have to dismantle the boot trim of your smart fortwo to access the various cables.
If all these checks have been done and still nothing works, then you don't have many options left, it is most likely due to the lighting fuse that has a problem.

Important to know, the license plate light fuse on your smart fortwo does not correspond only to this function. In other words, if you only have a fault at that precise lighting, then your fault is not from this fuse, which is common.

If, however, your parking lights do not work or you identify other simultaneous failures on your smart fortwo, then it is most likely related to the corresponding fuse.