Why the heater fan on the VAZ-2114 stopped working: causes and solutions

It is believed that the most frequently changed element in any car is the fuse - a small spare part that often becomes the cause of a big problem - non-functioning electrics. If the dashboard backlight has disappeared, most likely the VAZ 2114 instrument backlight fuse has blown, and if you replace this element, it is quite possible that no other manipulations will be required. The same thing - if the seats stop heating up (and now, when the weather is not at all pleasant, this is especially important), most likely the VAZ 2114 seat heating fuse should be replaced to eliminate the problem.

Photo: Fuses for VAZ 2114 and their description

So, why do VAZ 2114 fuses burn? As in any other car, the main reason is power surges, to which the fuse, or rather its fusible element, reacts unambiguously - it melts, interrupting the network. Sometimes the cause of power surges is the design flaws of the car itself, but often it is also a violation of operating rules committed by the driver himself.

One of the most frequently blown fuses is the fuse for the VAZ 2114 cigarette lighter. The reason for the blowout is trivial: with all the variety of additional equipment that can be connected to the car through the cigarette lighter, not all of them have the same power. Exceeding the permissible voltage causes the fuse to blow, so the relationship is simple and obvious. If you have such a problem, first of all we look at the fuse diagram of the VAZ 2114 to figure out where exactly the fuse is located that is responsible for the cigarette lighter (or other important component for you). You can find this diagram in the user manual, or, if you do not use the manual, then on specialized websites on the Internet.

The VAZ 2114 has two fuse boxes: under the hood, next to the left glass, and under the central dashboard, with access from the passenger compartment. You can access any of them using a regular screwdriver. To replace the fuses themselves, in turn, tweezers are used, which are stored directly in the mounting block. There is also a place for spare fuses, in case of an unforeseen situation directly on the road.

Why doesn't the stove work on the VAZ 2114? This is a question many car owners ask themselves. And how to make the VAZ 2114 warm?

Unfortunately, the heating system of the domestic automobile industry still leaves much to be desired. This issue is especially relevant in winter. After all, being cold is not only unpleasant, but harmful, even dangerous to health. And here we are not only talking about the driver’s hypothermia, everything is clear about this. Glasses with a faulty heating system quickly freeze and become covered with frost and ice. Visibility on the road for the driver in such conditions is negligible.

To find out why the stove on a VAZ 2114 does not work, you first need to understand how the stove on a VAZ 2114 works.

Heating in the interior of the VAZ 2114 is arranged according to the classic principle of the line of Samara cars.

What does the heating system consist of?

  1. Faucet.
  2. Radiator.
  3. Fan.
  4. A special resistor that controls the power of the fan motor.
  5. Dampers through which air is supplied to the cabin.
  6. Optimal power position switch.

When the system is working properly, coolant enters the heater radiator through the heater tap. The driver controls the temperature of the air entering the cabin independently when he opens and closes this same tap. Heat is created by the coolant that reaches the radiator. When the engine is hot, the coolant temperature rises to 95 degrees!

Replacing the heating motor (fan)

When the reason why the heater fan on the VAZ 2114 does not work has been identified, it is necessary to begin eliminating it. There are a sufficient number of fans on the market in different price categories: from cheap Chinese models, the quality and service life of which are in question, to reliable and durable options, whose cost is an order of magnitude higher.

As evidenced by reviews from owners of fourteenth VAZs, the best option in terms of price-quality ratio are Luzar fans. The current cost of which, today, is about 1200 rubles.

Removing the heater fan on a VAZ 2114 is quite simple - it is located in a special container located in front of the windshield in the hood compartment. The only tools we need are a screwdriver and a set of keys. Let's consider the algorithm of actions by which the stove fan is replaced on a VAZ 2114:

  1. First of all, disconnect the negative terminal from the battery;
  2. In the cabin of the fourteenth, under the dashboard, there is a positive power wire for the motor; it must be disconnected ;
  3. We move under the hood of the fourteenth. The fan casing cover is secured with two screws; they must be unscrewed;
  4. We remove the “ground” of the motor; to do this, you need to unscrew the nut that secures it to the body of the heater casing from below;
  5. Open the casing and unscrew the two screws that secure the fan;
  6. Next, unscrew the screws that secure the air intake grilles to the housing in front of the windshield. We take them off;
  7. Now you can remove the heater motor on the VAZ 2114, since all its fastenings have been removed. The fan is mounted on a hook located on the body - move it towards you and lift it;
  8. Once the motor is removed from the hook, you will need to rotate it 90 degrees so that it comes out of the casing smoothly and remove it.

Replacing the heater motor on a VAZ 2114 is performed in the same way in the reverse order. As you can see, there is nothing complicated here, and all repair work can be done at home without any problems. Have a nice ride!

What causes heating system breakdowns?

Blown fuse

It would seem like a primitive malfunction - you just need to replace it with a new one. However, this problem has a “second bottom”. The fuse clearly deteriorated due to a short circuit in the system. You will definitely need to find it later.

A little about fuses

In total, there are 2 fuse blocks in the car: the first one is on the left side under the hood, the second one is in the passenger compartment under the panel. Both of these devices affect the operation of certain devices.

Which fuse is faulty will be indicated by a non-functioning device, for example, a windshield wiper. To get to the faulty fuses, you need to remove the block cover while simultaneously pressing the special latch.

As we know, there are two fuses, and only one of them is faulty. With good vision, an attentive driver can easily distinguish a burnt-out part from a intact one. In the core of the part on the blown fuse, the contact line will be interrupted, but for the adjacent, serviceable part, it will be continuous. If you can’t determine it offhand, then you can leave the fuse in place and at the same time turn on a non-working circuit, for example, dimensions. If there is voltage on one side and not on the other, the fuse is faulty and has burned out.

If fuses burn frequently, you should pay attention to the wiring. Most likely, there are serious problems with it and it’s time to contact a competent service.

But in our case, with a faulty stove, only one fuse can fail - this is F7. It is he who is attached to the heating system. Its power is 40 A (amps). F7 replies:

  • for the stove fan;
  • cigarette lighter;
  • heat supply to the rear window;
  • light in the glove compartment;
  • headlight washer (electric motor).

A faulty fuse will cause the oven and all of the above systems to malfunction.

Contact from the mounting block

Also a popular reason why the stove on a VAZ 2114 failed. There may be a faulty wire. In this situation, you should slightly and carefully move the bundle of contacts.

Ignition relay

It can also prevent the heating inside the car from working properly. If there is a malfunction, the relay must be replaced. It is located on the center console.

Ignition relay VAZ 2114

First and second position

If the heater does not work on a VAZ 2114 in the first and second positions of the switch, the driver will have to drive his car for a long time without heating before the long-awaited warmth begins to enter the cabin. The heating system is designed in this way: in the first and second positions, the electric pulse to the fan comes from a resistor, in the third position electricity goes directly.

What kind of part is this, and what problems can occur with it?

For the car's heating system, an additional resistor provides the best speed. It has two resistance coils and two operating modes. When the first mode starts, the electrical impulse goes through two spirals, and in the second mode, along a resistance spiral. You should look for a faulty resistor at the gas pedal. Repairing a resistor is a rare event. It makes sense if the contacts are burnt. The second correctable fault is a melted block, the one with three tips. It needs to be replaced with a new one. They are available for retail sale.

Where is the VAZ-2115 heater fuse located?

It is difficult not to notice when the heater in a VAZ-2115 does not work, especially if the heater breaks down in the winter.
What malfunctions can be assumed if a cold air flow penetrates into the car interior or if there is no heated air flow at all? There are several reasons that can stop the operation of the VAZ-2115 stove, including a malfunction of the fan fuse. To fix a fuse, you need to know exactly where it is. This will be discussed below.

Causes of malfunction of the VAZ-2115 stove fan

The VAZ-2115 stove is a complex mechanism, where a malfunction of at least one part can lead to a complete lack of heating of the car’s interior. To determine whether the fan is operating correctly, start the VAZ-2115 and switch the speed position to format from 1 to 3 inclusive.

Pay attention to the appearance of noise. If the fan is functioning adequately, there should be noise. However, if the fan is not operational at speeds 1, 2, but turns on at speed 3, then the problem is in the resistor or switch responsible for monitoring and setting the heating intensity mode of the stove.

The condition of the VAZ-2115 stove fan leaves much to be desired for the following reasons:

  1. There is poor contact in the mounting block. Such a contact must be thoroughly cleaned of traces of oxidation or completely replaced with new wiring. To identify this cause of heater failure, it is enough to move the block of flagella suitable for the mounting block with your own hands.
  2. The ignition relay may be acting up.
  3. The heater only works in switch mode 3. At first glance, it may seem that the fault is with the switch, but in fact the additional resistor is not functioning well. To repair the VAZ-2115 heater fuse, you need to know where it is located. To do this, look under the windshield wipers on the left and you will see a black box. The lid opens by removing 2 latches. Remove the cover and the fuses will be freely accessible.
  4. The fuse has blown. When starting to replace the fuse, do not forget that you still have to determine why the part burned out. To do this, in order to find the source of the short circuit, VAZ-2115 drivers go through the entire circuit.

The stove is adjacent to fuse F7, the current of which is 30A.

This fuse also regulates the operation of the cigarette lighter, the electric motor responsible for washing the headlights, lighting the glove compartment, and heating the rear window of the VAZ-2115. This is why a blown heater fuse cannot be confused with other fan problems.

  1. The heater position switch may also break down. The switch is located directly under the center console of the instrument panel.
  2. The car's heater fan motor has failed. If there is voltage, but the fan remains in the same motionless position, it means it’s time to change it or the motor brushes are stuck.

How to check if the switch is working properly

For diagnostics, take a regular marker light bulb rated at 12 V, where 2 wires are soldered. Then remove the instrument panel. You can do this by following the step-by-step instructions:

  1. Using a Phillips-head screwdriver, unscrew the 3 screws that securely secure the left center console screen.
  2. Remove the trim, and then remove the protrusion located at the bottom from the body bracket.
  3. Continue working with a Phillips screwdriver - remove the 5 screws secured in the right console trim and remove the screen.
  4. Disconnect the terminal that goes to the negative wire of the VAZ-2115 battery. If there is a radio receiver here, remove it and disconnect the harness block using a wire, or remove the plug container from the panel.
  5. Next, your task is to disconnect the plug from the cigarette lighter. The socket of the lamp illuminating the ashtray is removed.
  6. Pull the handle off the levers using a narrow screwdriver.
  7. Pull the handle that activates the electric fan switch of the VAZ-2115 stove in your direction, and then pry it lightly with a screwdriver.
  8. A Phillips screwdriver will be needed again to unscrew the 2 screws located above the devices, as well as the 2 screws below them.
  9. Pry up the plug and unscrew the screw under the plug.
  10. Get rid of the pair of screws that secure the trim.
  11. Remove the instrument panel trim and unscrew the remaining fasteners.

Minor troubles

And the last trouble that a car owner may encounter is the incorrect supply of air masses to the cabin. Fortunately, adjusting and repairing dampers is a simple procedure! You need to take pliers and bend the cable at the flap under the driver's steering wheel. Then the damper will tightly close the air duct again and the problem is solved.

Many motorists have encountered the fact that the heater fan on a VAZ-2114 stopped working. There are many reasons for this effect, and they can occur at any time. So, in this article, we will look at the reasons why the heater fan may not work, as well as methods of elimination.

The video below describes the process of troubleshooting and repair in a situation when the stove fan does not work:

Operating principle of the stove (heater)

In many VAZ models (including 2114), the stove works according to the following principle. Using the heater tap, you turn on the coolant supply.

After this, antifreeze heated to 90-95 degrees is supplied to the radiator. The next step is to adjust the rotation speed of the stove fan (usually there are three positions).

All that remains is to set the dampers and direct the air into the cabin, onto the windshield or onto your feet.

If the fan of the VAZ 2114 stove does not work, then the entire system turns out to be ineffective. Warm air will flow inside the car, but very slowly. As a result, you will be able to heat up very slowly.

Possible causes of a malfunction of the heater fan on a VAZ-2114

Heater fan installed on a car

Before eliminating a malfunction that has occurred, it is necessary to establish the causes of its occurrence.

So, according to the experience of many motorists, the most common reasons are:

  • Fuse blown.
  • Failure of the contact group.
  • Relay failure.
  • Resistor.
  • Switch.
  • The fan motor burned out.

Now that the causes have been discussed, we can move directly to elimination methods.

Elimination methods

Many motorists think that a heater fan failure is associated only with a fuse or combustion of the motor that turns it, but this is far from the case. Let's consider all possible reasons in more detail.

Fuse blown

Mounting fuse block where the heater fan fuse is installed

The most common cause of all auto electrician troubles are fuses that fail.

So, in the case of a fan, the first thing you need to do is check the integrity of the fuse. If it is burnt out, it must be replaced with a new one. If this does not help, then you need to look for the reason elsewhere.

The heater fan fuse is marked with an arrow in the diagram.

You can find the fuse in the mounting block marked F7 .

Since the fan requires a lot of energy consumption, the rated current is 20A , so the fuse must be set no less than this figure.

Failure of the contact group

Another reason that is quite common in cars is oxidation of the contact group. To eliminate this malfunction, you need to clean the contact connections or simply move them.

Since the mounting block is located under the hood and water can get into it, it is necessary to protect it from moisture. You can do this in this simple way.

It often happened that the connections and connectors themselves had to be changed because they failed and were completely destroyed due to corrosion.

Relay failure

Relay block on a car

A relay failure will cause the stove fan to turn on briefly.

Sometimes, as practice shows, it may not turn on the first time, or only when the power unit is heated. The solution is quite simple - replacing the relay . You can find it under the dashboard of your car.


The process of dismantling the heater resistor

A resistor malfunction occurs when the stove operates only in the extreme right position.

In this case, power will not be supplied, but only in the right position it is supplied directly, bypassing all other elements. Therefore, to eliminate the malfunction it is necessary to replace the part that has failed.


A fairly common malfunction is considered to be a failure of the switch or simply a breakdown of the contact connections.

Of course, it is not recommended to carry out repair operations, since incorrect restoration of an element, especially in the electrical part, can lead to the others breaking down. So, the manufacturer suggests that car enthusiasts with experience in DIY repairs recommend replacing the complete heater control unit.

Why might the fan not work?

The fuse has blown.

The fuse number F7 with a current of 30A is responsible for the operation of the stove fan. If this fuse blows, the following in your car will not work: the cigarette lighter, the headlight washers, the light in the glove compartment and the heated rear window. Therefore, checking this point is quite easy. It is more difficult to fix the breakdown, because... If your fuse is blown, there is a short circuit somewhere that needs to be found before installing a new fuse.

The contacts in the mounting block have become sour.

Oxidized contacts are a very common problem. To make the fan work, just move the wires going to the mounting block.


The reasons for the VAZ-2114 heater fan not working are quite simple and even a novice motorist can fix them. Of course, in 50% of cases, all malfunctions are related to the fuse, replacing which will normalize the operation. But, if the reasons are quite complex and the car enthusiast is not able to cope with them on his own, it is necessary to contact a car service center, where everything will be repaired cheaply and efficiently.

Good evening to all car enthusiasts, I read everything, everything is familiar, but the reason for me is that the fuse burns when I sharply stomp on the gas pedal, when I drive in quiet mode, the heater works and does not light up. If anyone has encountered this, please tell me what it can do be a reason?

Set the fuse to 20

Thank you very much for the detailed information! I fixed the stove in a couple of hours. The cause was a faulty contact group. Saved a good amount)))

I have a VAZ 21014 - the heater fan started to shut down, it only turned on if I drove for a while, it was like this for 3 weeks, then it stopped turning on at all. I checked the relay and resistor and fuses, but all this was in vain... then I decided to do this - I lifted the soot, removed the filter and the casing on the heater motor - I exposed the wires going to the fan with small cuts - the current rang... when I turn on the valve, but it doesn’t work... I took out this valve, turned it sideways up and pushed it to the right wing of the car there it’s wider and it came out (I cut off the wires because I had to climb out of the inside to disconnect it into the rubber band and then put it in again; I don’t want to have to suffer with getting in... I disassembled this miracle; there were pre-prepared brushes on the table - but alas, on the armature of the motor there were copper contacts in contact with the brushes completely erased in two places...a dead spot appeared.... I note that the supply of brushes was still normal. The machine is 7 years old, the fan always worked constantly - in the cold in the summer in the warm in the winter... in short, if the motor does not work, it is better to immediately buy a new one ..... I didn’t find the bearing, there is a bronze seal on the side of the brushes, and as I understand it, you can’t get to the other side without breaking it..... a new motor costs 650 rubles. You have to go buy it and push it from under the hood..... I’ll carefully connect the wires clamp and insulate it. Now I understand why these motors are not repaired, but are advised to be replaced with a new one right away.

there is no heater relay on the VAZ 2114, there is an ignition relay, there are a lot of consumers on fuse F7, there is no separate fuse for the heater, it doesn’t work only when the motor or switch burns out, breaks, or the ground burns out

Hello everyone, please advise what to check, while driving I turned on the heater at full power, and then it stopped working, the fuse is intact, the ignition relay is working, has anyone had this? Otherwise, I don’t want to dismantle the floor of the car, and it’s frosty outside - 30

closed the dance with a minus under the steering wheel into the heater wiring and the heater started working

How to check the fan

If everything is fine with the circuit, the problem is in the fan. Here the situation is aggravated by the fact that this is the most expensive part of the cooling system, so it is recommended to repair it.

Most often the problem manifests itself in the electric motor, i.e. in the heart of the fan. To check, connect it directly to the battery: plus to plus, and minus to minus. If it doesn't work, it's a wake-up call. First, inspect the brushes. They must be intact and not erased.

Next comes the bearings. If you hear a crunch or crack when turning, they need to be disassembled, cleaned and lubricated. Then inspect the contact group. If there is black carbon deposits, clean it with sandpaper and a brush soaked in alcohol.

If these actions do not lead to the desired result, the only option left is to completely replace the fan. It is also recommended to replace all components of the circuit, including fuses and relays.

Messages 1 to 20 of 45

1 Reply from vilatik 2009-04-14 10:00:14

  • vilatik
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Re: Heater fuse blows

Well, if after washing, but nothing new - most likely CY. Once after washing, my windshield wiper started working intermittently with the headlights on. I took it off, cleaned it, everything is normal now.

2 Reply from Biker22rus 2009-04-14 10:30:52

  • Biker22rus
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Re: Heater fuse blows

After the next wash, the 20A fuse for the heater began to constantly blow out, and clearly something was shorting somewhere, how and where should I dig? And for some reason the rear wiper stopped working, after the same wash.

Both the stove and the rear wiper are powered from this fuse (((((Blow air through the air purifier, you can remove the cover from the firecracker and dry the wiper plug.

3 Reply from Vovez 2009-04-14 20:21:38

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Re: Heater fuse blows

This seems to be a problem with old non-knife nuclear weapons. Which one do you have, new?

4 Reply from AMX 2009-04-16 07:04:31

  • AMX
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Re: Heater fuse blows

Maybe your heater motor has failed? Try to turn it off by removing the three-pin chip from the heater, which if you climb from the bottom on the driver's side on the heater body.

5 Reply from alexeykamf 2009-04-16 07:15:11

  • alexeykamf
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Re: Heater fuse blows

My front burnt out when the rear wiper control wire fell to ground under the floor. By the way, also vent. cooling will not work.

6 Reply from AMX 2009-04-16 07:25:34

  • AMX
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Re: Heater fuse blows

Let us have a predicate that protects several chains. By sequentially disconnecting each of them, you can find in which circuit there is a short circuit. If you can’t find it by turning off all the circuits, then you need to look somewhere in the CY. This is my train of thought.

7 Reply from AMX 2009-04-16 07:37:24

  • AMX
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Re: Heater fuse blows

What does the engine cooling fan have to do with it? I won’t even catch up. You need to look at the Murzilka circuits.. By the way, on the chip I wrote about there are resistors for speeds 2 and 3..

8 Reply from Valinog 2009-04-16 08:53:50

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Re: Heater fuse blows

If on the 1st motor it functions normally, but on the 2nd and 3rd the condom is knocked out, then most likely the problem is either in the contact of the condom with the terminal, or something in the heater motor itself.

9 Reply from Seryoga 09 2009-04-16 09:15:53

  • Seryoga 09
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Re: Heater fuse blows

Most likely, you need to hide the block, and start by inspecting the boards, because... I had the same problem - water accumulated there after washing, that's the shorty. Half of the tracks burned out. If they (fuse blocks) were sealed, then nothing like this would happen. And the body (halves) must be sealed with sealant, even when you install a new one.

10 Reply from Seryoga 09 2009-04-16 11:53:27

  • Seryoga 09
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Re: Heater fuse blows

Damn, the block is new... should I buy it again?

first open it, take a look, and then draw your conclusions

even if there is something wrong with the block, you can (depending on what and how badly it burned) use a fire iron. I repaired my block myself and restored it

11 Reply from Biker22rus 2009-04-16 12:43:24

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Re: Heater fuse blows

Damn, the block is new... should I buy it again?

First, take a look at the heater motor or its resistor.

12 Reply from yJIuTkO 2009-04-16 18:18:18

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Re: Heater fuse blows

+1 Please take it apart and look at the tracks. In the winter this whole thing stopped working! At first the fuse blew when the speed was higher than on, then the resistor burned out, and eventually the washer, rear wiper and heater motor stopped working! I took it apart and it turned out the track was burnt out! My friend re-soldered it and everything was good))) and by the way the topic was already somewhere.


With the thermostat not working, the coolant circulates in a large circle, while bypassing the small circle. The problem of a faulty thermostat is solved radically. It needs to be replaced with a new one. Many drivers, knowing about the low quality of their native thermostats, do not wait for it to fail and replace it with an imported analogue. Thermostats “Vernet”, “WAHLER” and “GATES” have proven themselves well.

It is not recommended to purchase Chinese models. They use low-quality steel, which looks like stainless steel. Such a device will not last long.

  1. Before starting work, you must drain the antifreeze. To do this, remove the protective cover. Place a container for antifreeze under the drain hole and unscrew the lid. Be careful. If you have just arrived, the liquid may be heated to 70 degrees or higher. Don't get burned. And best of all, let the engine cool down. And one more small note. Cover the generator to prevent liquid from getting into it. To do this, you can make a simple device from a plastic bottle.

    When you are sure that the coolant flows strictly into the placed container, you can unscrew the cap on the expansion tank. Wait until all the antifreeze drains out, close the drain caps on the radiator and expansion tank.

  2. Now we will get to the culprit of the cold stove. First you have to remove the air filter. To do this, you need to unscrew the screws and loosen the clamp that holds it.
  3. Loosen the two clamps connecting the hoses to the thermostat and remove the screws holding the thermostat. Now you can remove it.
  4. You definitely need to clean the mirror with a stationery or other knife and wipe it with a rag.

Installing a new thermostat is done in the reverse order.

  1. The new thermostat is installed in its place and secured with screws.
  2. The hoses are connected and secured with their own clamps. But before putting on and securing the hoses, they must be checked for serviceability. If they are worn out, it is recommended to replace them.
  3. Before adding antifreeze, check the drain cap on the radiator and expansion tank to make sure they are closed.
  4. Remove the pipe on the throttle body heating.
  5. Now you can fill the coolant into the expansion tank, slightly above the level.
  6. By pressing on the nozzle, you expel excess air from it, but do not forget to place a dish under the hose. Antifreeze will leak into it. Secure the pipe in place with clamps, pour the leaked liquid back into the tank, and close the lid.
  7. Install the air filter and secure the protective cover.

New thermostat
Here are a few more reasons why the fan does not work:

  • Air in the radiator can cause the engine to overheat and the cooler not to turn on. To get rid of air pockets, you can simply remove the pipe from the throttle body, as you did when you changed the thermostat.
  • A clogged radiator also leads to similar consequences. Therefore, the radiator grille must be blown out using a compressor or pump.
  • The operation of the heater fan can be affected by low antifreeze levels. This is easy to check. If the coolant level in the expansion tank is significantly below the mark, it must be topped up.
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