Carly Community
Fuel filter heater problem
Prevents fuel from getting too thick in cold weather, especially in diesel cars.
Costs
Every car issue can be caused by different things. Here are the most common ones
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Most Expensive
Moderate costs
Cheapest case
Discussions
User of our Carly Community asked the following questions regarding that fault:
Smart Mechanic
Details
Probability
Based on the values and symptoms you have entered, a crude estimation of the probability of this problem can be made
HIGH
Typical consequences
If this defect is detected, it may lead to the following problems:
- Engine start not possible
Functionality fuel filter heater
The function of the fuel filter heater is to preheat the fuel filter (mostly on diesel vehicles) at low temperatures. At very low temperatures, it can happen that the diesel fuel "sults". This means that it becomes more viscous and thus can no longer pass through the fuel filter.
The fuel filter heater is usually located just in front of the fuel filter and is connected to it. At most service stations in Germany, so-called winter diesel is offered in winter. This is an additional measure to prevent the fuel filter from "going sour".