
How a heater works on a Toyota Rav 4 (4th Generation)
In winter it is our best ally on the way when we go to work. And when it does not activate it is easily missed. Therefore before knowing where the malfunction comes from, it is essential to understand how it works on the famous Toyota Rav 4 (4th Generation), at least the basics. The heating uses engine heat to raise the temperature of the personalised tour, and generally the cooling device. So it's a two in one. In addition, the emission device, so that the hot air comes into the cabin also has a double use. There is a ventilateur which sends hot air when the vehicle is running at low speed or not, and it is the speed of the vehicle which will send hot air as soon as you circulate faster. Well designed, right?
Recurring heating problems on a Toyota Rav 4 (4th Generation)
Broken thermostat
The idea is simple, in case the thermostat which regulates the heat does not really capture the temperature of the water in the circuit, the latter is affected. Even if the thermostat of the famous Toyota Rav 4 (4th Generation) does not turn well, the heating will work normally. Because the natural heat of the engine will increase over time, and so will the cooling system, whether it is regulated or not. Our only hassle is that you will have trouble setting the temperature.
Air shutters blocked on the Toyota Rav 4 (4th Generation)
It is a dysfunction that happens quite frequently. 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.
Defective fan on the Toyota Rav 4 (4th Generation)
As you can imagine, the fan is effective only at reduced speed and in neutral. In case this heater does not emit air at reduced speed but you still hear its noise, it means that your fan turns out to be probably running. In general, thanks to a higher speed the heating of the famous Toyota Rav 4 (4th Generation) will be able to turn. If the fan never turns in any way, it will have to be replaced.
Blocked hoses
The clues will be rather simple. When your heating blows but does not generate hot air or very slightly, the malfunction probably comes from the hoses. They become clogged over time and no longer allow hot water to reach the heating of the famous Toyota Rav 4 (4th Generation). In this specific case, clean the hoses or install new ones.
Air pocket in the circuit of the Toyota Rav 4 (4th Generation)
The syndrome happens to be the same as that of the hoses. In the same way that air pockets are introduced in the circuit, the hot water has in the same way of the difficulty to reach the radiator of the heating of the Toyota Rav 4 (4th Generation). In this specific case, it will suffice to purge the circuit.
Conclusion
You now understand where the malfunction will come from. By cons it may be that the reason comes from the other hand, for example the air duct of the famous Toyota Rav 4 (4th Generation) blocked, or a defective valve, however it is unfortunately less frequent. Do not hesitate to leave a comment if this post was useful to you. Good walk !