
How a heater works on a smart fortwo
Winter is our best ally on the way when we go to work. And when the latter does not activate we notice it quickly. Therefore, in order to know where the problem comes from, you will have to understand how it works on your smart fortwo, at least in a simplified way. The heating uses the temperature of the engine block to be able to raise the temperature of the personalised tour, and in most cases of the cooling device. So there is duplication. Similarly, the emission device, so that the air arrives in the cabin also has a double use. It's the ventilateur which emits air when the car is driving at low speed or is stopped, and it is the speed of the car which will send air when you are driving at high speed. Well designed, right?
Recurring heating problems on a smart fortwo
Broken thermostat
The concept is elementary, when the thermostat that regulates the heat does not understand the degree of heat of the water in the circuit, the whole of the latter is affected. Even if the thermostat of your smart fortwo still does not activate well, the heating will still work. Because the natural temperature of the engine block will gradually increase, then the water circuit too, whether it is regulated or not. The only annoyance is that you can't really set the air temperature.
Air shutters blocked on the smart fortwo
This is a problem that occurs fairly regularly. These shutters, which allow you to direct the air or adjust the intensity, sometimes get blocked over time. To remedy this it is simple, remove the cover and look inside how it was done. Activate the mechanisms to see where it is blocking. Put a little WD 40 to lubricate and voila.
Faulty fan on the smart fortwo
As you can imagine, the fan is effective only at reduced speed or when stopped. If this heating system does not emit any air at low speed and yet you can still hear noise, it means that the fan is probably screwed up. A priori, with a higher speed the heating of your smart fortwo will be able to work. Assuming that the fan does not really activate it should be replaced by a new one.
Blocked hoses
Its signs are relatively obvious. When your heating blows but does not heat or little, the problem probably comes from the hoses. These become clogged over time and no longer allow hot water to heat your smart fortwo. So, remove the hoses or put new ones.
Air pocket in the smart fortwo circuit
The syndrome happens to be identical to that of the hoses. In the event that air bubbles are stored in the heart of the circuit, hot water also has difficulty accessing the heating radiator of this famous smart fortwo. Then it is only necessary to purge the circuit.
Conclusion
You now understand where the problem could come from. On the other hand, it may be that the reason comes from elsewhere, like the air duct of your blocked smart fortwo, or a defective tap, but it is still rather rare. Do not hesitate to leave a comment in case this text served you. Enjoy the road!