No need to be a DIY professional to change fuses on a Ram ProMaster. This still requires some specific concepts and information, which is why we propose to help you through this article.
First of all, it is important to know what role the fuse box plays on a Ram ProMaster.
Role of a fuse box on your Ram ProMaster:
This fuses box is generally used to protect electrical circuits that are essential parts of your Ram ProMaster.
It is composed of a lead wire that is linked to the input circuit of the electrical circuit. Due to its technical properties, lead heats up relatively quickly when the current flows. This allows it to melt if a possible overload occurs.
As a result, the power is cut off and the peripheral parts are preserved, but above all it stops an overheating or even an explosion of certain sensitive parts, batteries for example. It is important to understand that this is an essential part of your Ram ProMaster
With developments in mechanics and technology, it has been assigned additional ancillary tasks over time, such as helping other electrical components, or even becoming a centralizing control box.
This suggests that even if its primary function remains unaffected, these additional tasks make its replacement a little more complicated.
We will detail in the next section how to locate the fuse box in your Ram ProMaster.
Where can i find the fuse box on my Ram ProMaster:
Now that you know its usage, you probably wonder where is the fuse box located in your Ram ProMaster ?
Nowadays, the vast majority of cars have 2 cases and it’s not always easy to find them.
The best solution remains for you to consult the logbook of your Ram ProMaster.
If you don’t have this notebook, here are some recommendations to help you find your way around.
First, one of the boxes is often close to the driver’s side. It is sometimes complicated to access and you may need to remove some protections from the inside of your Ram ProMaster in order to reach it.
Another practical location is in the engine compartment. Look for the battery, it’s often right next to it.
Once the box is found, you will need to find the fuse in question in order to be able to change the defective one. Indeed, on your case, each fuse corresponds to a specific role, you will have to find the matches. For example, your beam headlamps have their own fuse.
These assignments must appear in your maintenance manual of your Ram ProMaster.
Be especially careful when removing it, you could damage the parts around it. Very often, a plastic clamp is provided with it, which will really facilitate your work.
Different fuse models on your Ram ProMaster:
Another essential point to know when you are about to replace these parts is that there are different types of fuses. We will target here only on the most frequent models in order of size, from the smallest to the largest:
Mini fuses: They have a rating of 2 to 30 amperes. A significant advantage is that they are very small and as a result not very cumbersome. On the negative aspect, they have a limited resistance capacity, it does not correspond to the protection of any circuit of your Ram ProMaster.
Standard fuses: They have a slightly higher rating than mini fuses (from 3.5 to 30 amperes) but are relatively larger. They measure 2*2 CM.
Maximum fuses: These are the largest as their name suggests, they measure 3.5*2.5 CM, for an amperage of 30 to 90. Their role is mainly found on drive parts (cooling…)
Now that you have more information about these famous fuses, all you have to do now is act carefully.
Conclusion and other informations on fuse boxes
Here are also some important rules to follow to ensure the proper functioning of your Ram ProMaster.
It is important to substitute a fuse with a fuse corresponding to the correct amperage. Do not rely automatically on the fuse in place, it may be there by mistake.
EX: There was a short circuit on a line because the fuse in question was too small. If you replace this fuse with its equivalent, the problem is very likely to happen again.
Please refer to your Ram ProMaster’s maintenance manual for the appropriate size. Each caliber normally has its own colour, which will make it easier for you to recognize it.
You might also wonder how to check if a fuse is blown and also if you can check it without removing it. The answer is yes.
You could easily visually inspect the element in a glass fuse to see if it has blown, but unfortunately they now mostly have solid, non-transparent bodies that hide the element from view. To know if the fuse is blown, you will have to use a multimeter. Once configured, a multimeter can measure the resistance of the fuse element. Resistance is measured in Ohms ‘Ω’.
You will find a tutorial for your Ram ProMaster of this online by simply googling it.
Last but not least, be very careful with the surrounding electronic components, you could damage important parts when handling them or even more important harm yourself !
If you wish more guides on the Ram ProMaster, go to our Ram ProMaster category.