Fog Renault Megane Classicc Year 99

Hello everyone, I have a condensation problem of my megane crystals, I have taken it to workshop several times and they do not find the solution, as soon as a little cold makes all the crystals tarnish and I have to put the heating to the fullest so that this does not happen, everything comes since we had a leak in the radiator and entered water towards the feet, repair the radister and since then (about 3 years).

Let's see if anyone knows what can happen

thanks to everyone

Hello Julio, obviously the problem is caused by the heating radiator, or it was poorly armed or did not place the insulators that it brings to avoid that, make it control in a good heating workshop and air conditioning, luck and tell us that you discover, a hug.

Thank you, I had thought about it and I have reviewed the lower part several times and it is not wet or it seems that I lose any water but however I will pay attention to you.

Thanks again.

Hello Julio. It is clear that the condensation inside the vehicle comes due to the moisture in the interior of it.
-It could be that the heating radiator was badly mounted, as Jal indicates. If so you would notice symptoms of loss in the cooling circuit (level drop, smell of antifreeze ...).
-If there are no losses in the circuit we have two options left: that there is water inside since it was repaired and that between water (of rain for example).
If there were water inside the car since it was repaired somewhere that is not in sight, as under the upholstery of the ground, the soil may be noticed dry but the insulating materials used in soils and others are also usually very absorbent and may be humid (or wet).
If rainwater into the interior entered the same could happen, that absorbent materials are soaked and the moisture is provided to condense.
So I recommend, first, make sure that there is no loss of fluids in the circuit, and then, if there are no, looking for humidity inside the vehicle, starting the search for the immediate vicinity of the heating radiator and lower areas where the water can be stagnated.
If you will find very humid water or materials, you know, to dry and see if it doesn't enter anymore. Luck!

Thank you, but in principle it does not enter water anywhere or the radiator loses.

Thank you