The indicator light on your particle filter turns on and you do not know what caused the problem. The particle filter exists more on cars Diesel, although they will be found more and more on petrol cars. Just before you start repairs on this Smart Fortwo 3, it is important to know where this malfunction comes from. How does a FAP work? Why does the light come on? What can be the most frequent concerns? In this text, we will go around the question. 
What is a DPF on your Smart Fortwo 3 for?
As its designation presages, it is used to purify microscopic molecules harmful of your vehicle. The particles are so tiny that they easily enter our body. It is also Peugeot who created this FAP. The catalyst is used to lower the quantity of molecules generated by the engine block, while the FAP collects the waste. It is therefore necessary to have a working particle filter in case you do not want this Smart Fortwo 3 to pollute.
Why the FAP indicator lights up on your Smart Fortwo 3
The FAP of your Smart Fortwo 3 is clogged
Indeed, this is the most common problem. No worries, the FAP clogs up as time goes by. The molecules pile up and thus prevent the circulation of exhaust gases. As a general rule, the FAP of this Smart Fortwo 3 will be able to be cleaned automatically and make the clumps disappear. On the other hand, if it is particularly damaged it is essential to change it.
An electronic problem
The concern with the LEDs is that you are in no way sure that there is a problem. In fact, it sometimes happens that an indicator light is lit while this Smart Fortwo 3 works without problem. The FAP has a few electronic sensors that send a warning to the dashboard. In the event that your sounders do not prank well while this FAP is working properly, it is possible that the LED will start.
What to do if the FAP indicator on your Smart Fortwo 3 lights up?
First, it is perfectly forbidden to remove the particle filter from your Smart Fortwo 3! It is an offense. You will need to examine the sounders to see if they are working perfectly. Assumed that they themselves work correctly, the dysfunction comes from the FAP. If the latter is dirty, you have the possibility of repairing it by driving on high speed for around 10 to 15 minutes. Do not climb too much in the towers, the process could damage the engine. We advise you to go up to 3000 revolutions minutes. The heat of the engine block should thus carbonize the stored dirt, and thus release this FAP. If this combination does not work well, it is necessary to replace it with a new one.
Conclusion:
A fap in poor condition will pollute but also reduce the power of the vehicle. It is therefore essential to replace it. Leave a comment if you have ever used this file. See you soon !