The particle filter is a pretty recent invention that aims to take out harmful particles from the exhaust gases of latest diesels. It has long been discovered as the miracle solution to these pollution problems. However, it doesn’t work as well as intended and causes more problems than it handles, which is why we will find out on this page when changing the particulate filter of a BMW 4 Series? . To achieve this, to begin with, we will identify what the particle filter on your motor vehicle is utilized for, and then when to change the particle filter on your BMW 4 Series.

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What’s the purpose of a BMW 4 Series’s particulate filter?

So we commence our article with the rationale for this component not too long ago included into diesel automobiles. As we explained quickly in the introduction, the intent of this filter was to fix the problems of pollution and harmfulness of exhaust fumes from BMW 4 Series automobiles. Its working principle is to store exhaust fumes that are unburned or that still contain harmful particles, and when it is at a sufficiently high temperature to cause a second combustion that will finish burning and get rid of all these carcinogenic particles. Unfortunately, to reach this very high engine unit temperature, you have to be on the highway or have your BMW 4 Series engine unit revving up. So we have noticed over time that vehicles that are mainly on short trips or in the city do not enable the particulate filter to burn these fumes and we will observe in the next section that these problems can force you to change the particulate filter of your BMW 4 Series .

When to change the particulate filter of a BMW 4 Series?

In this section we will identify what you are clearly drawn to here, whether it is required to change the particulate filter of a BMW 4 Series and if so, when?

Is it required to change the particulate filter on BMW 4 Series?

There are 2 types of particulate filter for vehicles, a particulate filter with additive, which does not concern the BMW 4 Series, but which needs to be recharged every 120, 000km with an additive that allows the regeneration of the particulate filter and therefore to burn all those harmful soot. The second one, the one we are enthusiastic about today, functions with precious metals that will create a chemical reaction at high temperature and cause the regeneration of the filter and the evacuation of the carcinogenic materials. However, as explained above, it needs very high temperatures, if these are not reached the filter will clog. If the filter is not regenerated manually, drive at high speed for about 20 minutes to reach this temperature and thus regenerate your filter, you will clog it and risk damaging your turbo, your EGR valve or your engine unit. If you need to clean the EGR valve of your BMW 4 Series due to your particulate filter, do not think twice to check out our content on this subject to identify what the process is.

When to change the particulate filter of a BMW 4 Series?

As we defined before, a particulate filter is supposed to last the life of the car, however some of you may wonder when it is required to change the particulate filter of its BMW 4 Series? Be aware that this part is extremely expensive, labor is not the most important problem because it is easy to access. But the part itself will vary enormously in price based on your motorization, you can still count a range between 700 and 2000€. This change should just be considered in the circumstance of a completely clogged particle filter. If you don’t frequently take the motorway, we recommend you, every month to drive 10 minutes on the motorway at least 3000 rpm . In spite of everything, the current particulate filter have not been well designed and remain problematic, it is considered that due to the lack of a sufficiently regular temperature rise and other design problems, you should begin planning to change your particulate filter from 200, 000km if you have a use of your XX that is more urban and a little more if it is mixed .

If you want more guides on the BMW 4 Series, go to our BMW 4 Series category.