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Fuel filter heater problem

Prevents fuel from getting too thick in cold weather, especially in diesel cars.

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Costs

Every car issue can be caused by different things. Here are the most common ones

Most Expensive

max.

Potential Causes

  • Spare parts
  • Work time
Moderate costs

max.

Potential Causes

  • Spare parts
  • Work time
Cheapest case

max.

Potential Causes

  • Spare parts
  • Work time

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Discussions

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Details

Probability

Based on the values and symptoms you have entered, a crude estimation of the probability of this problem can be made

high-probability

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".

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