- There were demons - we do not deny this. But they self-destructed.
Georges Miloslavsky "Ivan Vasilyevich Changes the Profession"
Fog light
The fogging is so strong that it does not even allow to determine the type of headlight. The fogging is so strong that it does not even allow to determine the type of headlight.
Generally speaking, absolutely all headlights and other car lights are a priori leaky. It cannot be otherwise: when heated, the temperature inside any headlight can easily change by 100 degrees! From minus 35, achievable in winter even in Central Russia, to 60–70 degrees in the included headlight in the summer, in the sun. In addition, the rear of the headlamp is located in the engine compartment, where it is usually quite hot. Naturally, the air in the headlight expands, and therefore you cannot do without exchanging with the external environment.
Where there is contact, there is always the opportunity for fogging. For example, if a cooling headlamp draws in moist air - say, at a sink, then a transparent hood (it used to be a diffuser) has the right to become somewhat cloudy according to the laws of physics. Well, if the headlight has defects, then the chances of it fogging up are much higher. Once the beloved Volga of one of the authors began to attract attention by the fact that the glass of the headlights behaved differently - one is more transparent than the other. Soon everything became clear: when visiting a service, one diffuser fell off by itself!
Is fogging dangerous? Undoubtedly. It distorts the light distribution, which interferes with both the driver (the illumination of the road falls) and other traffic participants (they are blind).
Muddy headlight
The dipped headlights of Largus are severely distorted. The dipped headlights of Largus are severely distorted.
At the same time, increased humidity inside the headlight housing destroys the coating of reflectors. Well, there’s nothing to say about the electrician: water and contacts will never be reconciled.
If the headlight is working, then there’s nothing to be afraid of. Misting will disappear as quickly as it appeared. The headlight, as we have already noted, “breathes” - a cheap tube has a downward-facing tube, while the machines used for ventilation use special air vents with small filters.
headlamp
Headlight Lada Largus with two breathers (white caps). Headlight Lada Largus with two breathers (white caps).
But in any case, any lighting devices are protected from accidental moisture. Unless, of course, they are serviceable.
headlamp
Fog Light Kia cee'd. Two breathers are clearly visible. One for each section. Fog Light Kia cee'd. Two breathers are clearly visible. One for each section.
And what kind of malfunctions can contribute to fogging? Everything is simple here: most often the ventilation is simply clogged with dirt. Cracked headlights also "walk by themselves." Some cases of fogging are associated with unprofessional disassembly / assembly of the headlight.
In such cases, there is only one piece of advice. Repair the headlight until all joints are tight, so that only regular “breathers” remain. If it does not work, then the headlamp must be replaced. No desiccants in the form of silica gel or pieces of diapers with a faulty headlight will help.
And yet, how dangerous are water droplets that get into the headlight? We set up a simple experiment: using a syringe, we pumped 20 ml of water into the optics of the editorial Largus, which is quite a lot. Lights were turned on, they waited, then they turned off - well, yes, the caps were dim. Light distribution has become ugly. However, after a couple of days, after a relatively small mileage, the effect disappeared: the vodka safely disappeared into the atmosphere. Which, in fact, was required to prove.
Of the useful tips for anti-fogging, we mention, perhaps, only one: be careful about washing the engine compartment under pressure. A strong jet can disrupt the "breathing caps" and cause trouble, after which the headlight will have to be tinkered with or completely replaced.
