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Thermostat cooling circuit motor defective
Regulates coolant flow for engine temperature control.
Costs
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Most Expensive
Moderate costs
Moderate costs
Moderate costs
Cheapest case
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
Typical consequences
If this defect is detected, it may lead to the following problems:
- Engine damage
Functionality map thermostat
The electrically heated thermostat uses coolant and an electric heater to heat the wax working element. This combination allows the engine temperature to be regulated individually based on load requirements. The engine control unit controls the heating based on various factors.
In the case of high power requirements, the heating causes the coolant circuit to open early. Depending on the specification, the engine can be operated at around 100 °C - 110 °C in the partial load range, which brings a consumption advantage of 1-2%. At full load, the temperature is lowered to around 80 °C, which can increase performance and especially torque by 2-3%.