Webasto does not start on gasoline for some reason. Webasto won't start. purchase and installation

Webasto has become an almost indispensable thing in the modern automotive world. All those lucky people who have this preheater can avoid a lot of serious problems in winter. But sometimes they still happen. The driver tries to turn on the system and sees that the Webasto does not start.

The reasons for this behavior can be very different, and few people read the instructions for this installation. Let's figure out what Webasto is, how to properly operate this system, let's look at the reasons for its breakdowns, as well as error codes.

Unlock Webasto

When Webasto is blocked, when turned on again, the warning lamp flashes several times, which are repeated after a certain period of time - this is an error code indicating a certain type of malfunction. The code can be deciphered using the service book that this heater comes with. Now that you have fixed the problem, you can safely begin erasing the error. Depending on the model of the heater and the car on which it is installed, there are different ways to remove the Webasto lock. On fairly outdated models, you need to briefly de-energize the Webasto by disconnecting the battery from the car, and in some, disconnect the main fuse for a few seconds, then reconnect it. However, in most new models, Webasto is unlocked by connecting to a computer with special software that reads the error code, decrypts it and, if necessary, deletes it from the memory of the electronic control unit.

Webasto heater unlock software

Since not every owner has a special cable and software with him, you should contact a service station, where experienced technicians will unlock the Webasto. There is another universal way to unlock Webasto, suitable for most heater models. You need to turn off the heater, disconnect its main fuse, turn on the ignition and start the car. After the machine has been running for a while, you can turn it off, connect the fuse, and try to restart Webasto. If this method does not help, then you can repeat the procedure several more times, but if this time the attempt was unsuccessful, then you should contact the Webasto service center.

troubleshooting

Operational failures are divided into types:

1. Errors in internal memory . As a rule, they do not affect the operating mode.
2. Spontaneous failures . Autostart or secondary activation is hidden in the device’s circuitry.
3. Shutdown by mistake . There is a problem with the control panel or power supply. The heating turns off on its own without saving the error. The second failure option is when the error persists, but a restart asks for a signal to shut down and restart the system.
4. Webasto blocking . Occurs due to a recurring error. The failure must occur 4-6 times and then the unit is blocked and saves the report. It is impossible to unlock the mechanism yourself; you should contact a service center. Note that if the failure occurs due to low voltage or a damaged battery, there is no blocking.
5. Overheat lockout . When Webasto overheats, the system locks up.
6. Shutdown by mistake due to low or high voltage . When the voltage reaches 11.5V, the mechanism turns off for a while. Afterwards purging occurs. The voltage can be measured using the control unit. When the voltage is too high, it is measured with a heater. Typically, at 16V voltage, work is suspended, shutdown and purging occurs. If the problem is resolved, the system is ready to serve again.

When Webasto does not start, other reasons are determined using Thermo Test PC diagnostics.

Troubleshooting.

Webasto malfunctions and their elimination

Webasto hair dryer does not start.
Webasto does not start: reasons. resetting errors and unblocking webasto thermo top evo The main malfunctions include the following prerequisites:

1. The heater does not start;
2. Refusal to work;
3. After starting, the heater stops.

Webasto does not start depending on the properties of the equipment, as well as the properties of the fuel. It is necessary to start from the fact that either there is nothing to set fire to, or there is nothing to burn, and in some cases it may be both.

Fuel of disgusting quality clogs the filter mesh of the fuel pump, resulting in a poor dose of it, and eventually a complete lack of supply. Also, bad fuel has a negative effect on the spark plug, which becomes very coked and stops heating to the appropriate temperature, and then becomes unusable.

This video shows how to diagnose it yourself, reset errors and blocking from the standard settings.

In case of failure, it is better to contact a service center for diagnostics with special software.

Webasto malfunctions on diesel engines are similar to those for cars with gasoline engines. On a diesel engine, Webasto may not start due to the fact that in most cases it is difficult to find diesel fuel of good quality, and the sulfur content is higher than normal, polluting the spark plug even more than gasoline. Accordingly, on a diesel engine it fails faster.

Also, with a diesel engine, Webasto does not start in cold weather due to thickening of the fuel, which may simply not reach the supply system into the combustion chamber through the pipeline. Because the fact that Webasto does not start in cold weather is a common problem on cars specifically with diesel engines.

Another problem with Webasto is that the fuel pipe is bent; because of this, fuel will also not be able to flow into the heater. And the most common reasons why Webasto may not work are: clogged fuel grid and unusable glow plug.

If Webasto does not turn on, then the prerequisite may be a control failure. And when Webasto starts up at first, then stalls after some time, it could also be an issue with the electronics. In these cases, you need to contact a service center, where the heater will be connected to a device with special software and diagnostics will be carried out.

Why doesn't Webasto start?

All about the Webasto system
Three main problems often appear:

• The heater cannot be started;
• A failure occurs when trying to turn on;
• The equipment stops working immediately after starting.

The cause of performance problems is very often low-quality fuel. The foreign substances contained in it in the form of small particles clog the thin filter mesh in the fuel pump. As a result, the amount of diesel fuel or gasoline is reduced significantly or its supply is completely stopped. Low-quality fuel quickly cokes the spark plugs and does not heat up to an acceptable temperature.

The increased content of sulfur and water in diesel fuel damages the heating system much faster than gasoline. In addition, diesel fuel tends to thicken in severe frost and physically cannot move through the pipeline. Using a summer diesel engine at temperatures below 10°C is a common reason why Webasto does not turn on.

Another reason can be identified - sagging fuel pipe. As a result, it is difficult for fuel to enter the combustion chamber. However, clogging of the filter and spark plugs is still a common problem.

Failure to start the system indicates that there is a problem in the electronics. The same reason applies to those cases when the heater first started working, and then turned off after a couple of minutes. The occurrence of such errors requires specialist intervention. Employees of a certified center with the appropriate equipment connect the heater to the diagnostic system. After several tests, the cause of the failure will be identified.

Devices with GSM control may experience heater startup errors. This is mainly due to the SIM card installed in the device. The commands transmitted to it simply do not reach the equipment due to the zero balance on it. To do this, just top up your account and everything will work again; some mobile operators may simply block the card if there are no payments for three months. This nuance must be taken into account before concluding a contract.

If you don’t understand why Webasto won’t turn on, but you know that everything is fine with the card, but the device gives an error, then you can reset it yourself. This is only suitable for equipment where the original control unit is installed.

The convenient and reliable Webasto preheater will last for many years with proper use and care. Refueling your car at proven gas stations and regularly checking the functionality of the equipment will help you avoid a critical breakdown.

The article was written based on materials from the sites: www.drive2.ru, ktonaavto.ru, aspid-pro.ru.

Option #1

Instructions for using Webasto on diesel and gasoline

Everything is simple here - remove the glove box, find the Telestart unit installed in the OD, as a rule, it is glued with Velcro tape on the back of the air duct at the front passenger's feet. There are three wires connected to the Telestart unit - ground, power and W-Bus. The W-Bus is an orange wire. There are two connection options - with disabling Telestart (simply connect the K-Line adapter to the corresponding contacts of the block removed from Telestart, while the W-Bus bus corresponds to the K-Line bus), and without disconnecting (you will have to break the integrity of the cable braid, pierce them, or another way - it's up to you). Power and ground can be taken from the cigarette lighter (rear) or battery.

Purchase and installation

You can purchase it in almost any city in the Russian Federation. The seller will always help you decide on the model.

It is best to entrust the installation to qualified service center employees.

If you decide to install the device yourself, then carefully read the installation instructions. Pay special attention to compliance with safety requirements when connecting the fuel supply system. Also be careful when installing the control system and connecting the heater to the vehicle's electrical system.

After installation, before the first start, it is necessary to bleed the vehicle's cooling system, otherwise an air lock will interfere with normal operation. If an air lock forms, the cooling system does not work properly, and the Webasto starts, but does not heat up.

Option No. 2

Why won't the hydronic heater start?

This is the most “inconvenient” option - you not only need to remove the glove box, but also find the required wire on the connector above the central computer block (CJB). You won't be able to pull out this connector, so warm up before starting work. The sequence is:

a.remove the glove box;

b. move the curtain to the side and up;

c.Locate the large connector above the Central Processing Unit (CJB);

In order for the connector to be in your hands, you need to pull it to the right until it is removed from the mount. For even greater convenience, I recommend removing the right (from the connector) part of the wiring from the clamp.

d.Find the W-Bus wire on the connector and connect to the W-Bus wire (wires under the arrows, connect to any) with a K-Line adapter;

— at the bottom left (according to the picture) it can be yellow (if Telestart is installed under the OD promotion) or blue-white (for cars with Telestart installed at the factory);

- on the top right, as a rule, there is a blue-white wire, between the orange-blue and blue-orange wires.

How to use Webasto?

In order for the device to serve a long service life, and you do not carry out Webasto diagnostics yourself, you need to follow the attached instructions and tips:

• parts of the mechanism should not come into contact with liquid;
• Parts of the device must not be subject to electrical charges;
• It is prohibited to work in high humidity and temperature;
• turn off the heater at the gas station;
• It is prohibited to use Webasto in closed garages;
• use the fuel recommended by the manufacturer;
• the device should be started occasionally with the engine not warmed up at a lower fan power for about 10 minutes;
• The heater can only work for an hour, so you shouldn’t run it often.

DIY repair

In the summer, no one uses this device, because there is no particular need for it. But then the first cold weather arrives, the driver presses the button, but there is no result. And self-diagnosis begins. The driver tries to detect the problem, and often fails.

But still, independent repair of Webasto is possible, although the manufacturer recommends that you contact the company’s diagnostic center for any breakdowns. If you understand how the system works and have the necessary knowledge, you can repair the device yourself.

Eberspacher error codes

Webasto Air Top 2000 STC 12/24

Modern air heaters AT 2000 STC are equipped with a MultiControl timer as a control; in the event of a malfunction, error codes are displayed on the timer screen, see the column (Code on the timer) in the table below.

Timer MultiControl

If the Webasto autonomous system is equipped with a switch with a thermostat as a control element, then an error code is issued after the heater is turned off in the form of a flashing operating indicator light on the switch.

After 5 short signals, long pulses are issued - the number of these pulses corresponds to the number in the (Code) column in the table below.

General signs of malfunction of Webasto engine liquid heaters

If these measures do not resolve the malfunction, the heater must be sent to a Webasto service center.

Planar Error Codes

Breakdowns

In case of any abnormal situation, it will show an error code (in numbers on the display or using a switch light). Abnormal operation of Webasto is most often caused by an oversight by the driver himself (for example, the fuel level in the tank dropped below the permissible level and the device did not start), but it happens that the signal is sent due to a serious malfunction.

Most often, Webasto stops working due to carbon deposits inside. Sensors may also fail.

A fairly common problem is the situation when it blows, but does not heat.

In this case, the circulation pump is most likely faulty. That is, the heater turns on, runs for several minutes and turns off due to overheating, because... liquid does not circulate in the cooling circuit. The problem is solved by replacing the pump.

The malfunction must be repaired only at a service center where workers have completed a special training course.

Operation of a faulty device is prohibited.

The Webasto autonomous heater is a very reliable device, but a breakdown can still happen. In most cases, failure occurs due to improper installation, improper operation or lack of maintenance.

Most often, the Webasto autonomous heater simply does not turn on in the event of a malfunction, however, in some malfunctions, abnormal operation of the device is simply observed.

The Webasto battery has the following typical faults:

• flame breaks;
• overheat;
• unstable operation (for example, difficulty starting).

In the event of a breakdown, the heater will indicate its malfunction by showing an error code (a table with codes is presented at the end of the article).

An inscription in the form of the letter F and two numbers will appear on the timer display (this is the error code).

If there is no timer and there is only a switch, then the switch light will give a certain signal (blink code). The light bulb will give 5 short signals and a number of long ones. The number of long beeps is an error code. If the error code is 0, then the light bulb will simply give 5 short signals.

Also, abnormal operation of the heater may be indicated by extraneous noise during operation of the device.

The car owner can only check the condition of the fuses on his own, as well as visually assess the condition of the heater.

Therefore, if visually all the fuses are intact and all the plugs are in place, then you must immediately contact a specialized service center

. To fully diagnose and read errors, you must have special Webasto Thermo Test software, as well as a special programmer and adapter plug. All this is available only in a specialized service center.

Self-repair may result in damage to the heater or vehicle!!!

Webasto Autonomy may show the following error codes:

Webasto is an indispensable thing in the modern world. Happy owners of such a device avoid serious problems in winter. But as soon as the system disappears, the question arises, why does Webasto not turn on? In the article we will try to analyze the possible causes of the breakdown, but first we will look at how to use the mechanism correctly so as not to experience further problems with the heater.

Webasto system in a car

Today it is difficult to find a car enthusiast who does not dream of integrating Webasto into his car. Webasto is an autonomous German-made one. A compact mechanism weighing 5 kg is installed inside the cooling circuit of the vehicle’s on-board network and fuel system. The main function of Webasto is to warm up the engine before starting the power unit. An autonomous heater pump drives antifreeze throughout the cooling network through the radiator. Essentially, the device is a small combustion chamber connected to the vehicle’s cooling system. Today the manufacturer is bringing to market two types of devices - Thermo Top Evo-4 and Thermo Top Evo-5

. They differ only in power.

Webasto is also connected to the standard interior heater and starts the fan. Thus, in the cold season, the driver does not need to wait for the engine to warm up. The motor reaches the required temperature with one press of the remote control button. The owner does not need to approach the car; Webasto can be launched from the apartment window. In addition, during a cold start, engine wear is equal to a mileage of 100 km

. The heater works autonomously, heating and starting the engine for a long time does not take up a large battery charge. The only obvious downside is that the battery life is reduced by a year. If we take this as a price for convenience and comfort, then changing the battery is not decisive.

Webasto operation in winter

Benefits and Features

VAZ-2110 (injector): the cooling fan does not turn on.
possible causes of the malfunction One of the advantages of this device is that you don’t even need to approach the car to start the system. You can start from the window of your own apartment. Many people love Webasto for its autonomy, and also for the fact that almost no precious energy is wasted from the battery for heating. One of the serious disadvantages is that the battery life is reduced by about a year. But you always have to pay for comfort. When the temperature reaches a certain threshold, and by default this level is 81°, then the control unit will simply turn off the installation. The car will wait for its owner, being completely ready to move. However, if there is no activity for a long time and the temperature begins to drop, then when it reaches 64 degrees, Webasto will start up and begin its work again.

Design and principle of operation

In order for the engine heater to work without complaints, it is necessary to ensure the functionality of the following parts:

• electronic control unit;
• the combustion chamber;
• heat exchanger;
• circulation pump;
• fuel pump.

The operating principle of the engine heater is as follows:

1. The fuel is pumped into the combustion chamber, where it is ignited by a spiral spark plug.
2. The energy of the flame is transferred to the heat exchanger in which the coolant circulates.
3. The intensity of antifreeze heating is controlled by an electronic unit.

In this way, the cooling liquid is heated to operating temperature. Antifreeze circulation in this mode is carried out exclusively in a small circle.

Interesting video of how the Webasto heater works:

Webasto malfunctions on a gasoline engine

A common reason for Webasto not starting is the lack of fuel supply to the combustion chamber. This may occur due to a lack of fuel or a severely clogged pump filter.

If it is not clear why Webasto does not work, then you should also inspect the fuel supply hose. If this part is bent anywhere, then fuel will not flow into the special combustion chamber.

If Webasto does not turn on at all, then failure of the heater may be caused by a malfunction of the control unit. This part is almost impossible to repair in a garage, so to repair the machine you should contact a specialized workshop.

If a problem occurs in the heater system, the system generates a fault message.

1. If a mini-timer is installed for control, Webasto error codes will appear on the display in the form of the letter F and two numbers.
2. If the switch is installed, heater errors will be indicated by a flashing light (blink code). After the heater is turned off, the operation indicator light will give 5 short signals. After this, the light bulb will produce a certain number of long signals. The number of long signals will be the error code.

See the table with error codes. With possible causes of malfunctions and methods of elimination:

Without special equipment and software, it is impossible to completely eliminate Webasto errors.

In some models of autonomous heater, you can reset errors without using a computer.

For this purpose, you should completely disconnect the device from the power supply. To ensure that the electronic circuit of the heater is de-energized, you must carefully disassemble the control unit and remove the central fuse. Often, after performing this operation, it is possible to completely reset the error on the device and restore its functionality.

If Webasto does not start with a timer, then completely de-energizing the control unit can also solve the problem. To turn on the heater correctly after resetting the settings, you will need to set the correct time.

Watch an interesting video on how to remove the Webasto error, a quick way without a computer and ELM:

These are the main reasons for gasoline, but Webasto may not start on diesel engines.

Diesel problems

Diesel engines equipped with a heating system may also be susceptible to Webasto failure.

The reasons why this happens are almost the same as breakdowns on gasoline engines. But most often such a nuisance occurs due to low-quality fuel. A large number of impurities in diesel fuel form a deposit on the spark plug, so over time, ignition of the fuel may stop completely or the heating system will work very unstable.

During severe frosts, Webasto may not start due to the lack of ignition of diesel fuel.

If you do not replace summer fuel with winter fuel in time, then a temperature of minus 7 degrees Celsius is enough to prevent the engine heating from starting. Winter diesel fuel can also freeze, but only at lower temperatures.

If a spark plug fails on a diesel engine, the combustion chamber will need to be completely replaced. It is almost impossible to purchase a new spark plug, but if you can find used elements for sale, you can try to restore the heater’s functionality relatively inexpensively.

Independent search and problem solving

Fuel.
Often problems lie in the fuel supply. This happens in winter, when many drivers forget to change their summer diesel fuel to winter. Look at the heater, it can work in a warm room, so take care of the garage. When the webasto goes away in a warm place, change the fuel. First, drain the diesel fuel, vent the system, clean it, change the filter, pour in new diesel fuel. There is another reason for fuel not entering the heater. The diesel fuel does not reach the pump. The sound is clear and loud. There may also be air leaks when the fuel line is damaged. In addition, you need to check the solenoid valve, there is a build-up of plugs in it. To check the air pressure on the winding, take an ohmmeter. Normal units range from 136-154 ohms. When performing diagnostics, feed any washing liquid into the tube. Electrical ringing. After checking the fuel system, people who understand electrics move on, and average drivers turn to service professionals. We look at fuses F1-F3, if there are blown ones, we replace them and check for functionality. Next we check the timer. We measure its current in the connector; if there is no current supply, then the timer should be changed completely. The next object of control is the stove. We look at the terminals along the way, when they are oxidized, this can block the current supply. We check the integrity of all wires. Depressurization most often occurs on the plug itself.

Webasto Operating Instructions

We remove the blocks. Webasto may turn on blocking due to the fact that the errors have been corrected, and reports about them have not yet been recorded in the memory panel. We remove power from the control unit for 3 seconds, removing it from the fuse. We take out the chip and return it to its place. Then we turn on the heater. Then we repeat the first two points of the manipulation. If everything went well, the system will work.

What is Webasto? Distinctive features

Today it is difficult to find a car enthusiast who does not dream of integrating Webasto into his car. Webasto is an autonomous pre-start heater made in Germany. A compact mechanism weighing 5 kg is installed inside the cooling circuit of the vehicle’s on-board network and fuel system. The main function of Webasto is to warm up the engine before starting the power unit. An autonomous heater pump drives antifreeze throughout the cooling network through the radiator. Essentially, the device is a small combustion chamber connected to the vehicle’s cooling system. Today, the manufacturer is bringing two types of devices to the market - Thermo Top Evo-4 and Thermo Top Evo-5. They differ only in power.

Webasto is also connected to the standard interior heater and starts the fan. Thus, in the cold season, the driver does not need to wait for the engine to warm up. The motor reaches the required temperature with one press of the remote control button. The owner does not need to approach the car; Webasto can be launched from the apartment window. In addition, during a cold start, engine wear is equal to a mileage of 100 km. The heater works autonomously, heating and starting the engine for a long time does not take up a large battery charge. The only obvious downside is that the battery life is reduced by a year. If we take this as a price for convenience and comfort, then changing the battery is not decisive.

Webasto operation in winter

Operating principle

When the driver turns on the unit, a fuel-air mixture is supplied to it, which then ignites and burns. Due to this, the coolant in the heat exchanger is heated. The pump responsible for circulation in the heater pumps antifreeze throughout the system through the radiator-heat exchanger, thereby warming the engine. The unit is also connected to the standard cabin heating system and controls the start of the fan.

So, in winter the driver may not have to wait for the power unit to warm up. The engine will quickly enter operating temperature mode with one press of a key on the remote control.

Mercedes-Benz E-class Brichka › Logbook › Webasto does not turn on error f87 - solution

Hi all! In the morning I noticed that the webast did not turn on, neither from the phone nor from the remote control in the car, the candle just came on for 5 seconds and went out and no sounds, in an old-style car timer on which it is impossible to diagnose a malfunction

Old style timer

But fortunately in our family we have a couple more Mercs with Webasto and new-style timers

New sample timer with diagnostics

Having connected a more modern timer, I tried to turn it on and got an error.

I started googling what it is

F87 - Permanent blocking of the heater. The heater is permanently blocked. Reset the lock and try to turn on the heater.

The control has an error log and a reboot, so after a reboot the error logs are cleared, I reboot, look at the logs - everything is clean, turn on Webasta again and it gives an error.

I'm calling Misha xxx024

It is advised to turn off the 20A fuse for a while, it is located where the air filter

Full sizeYellow pre 20A

I turn it off for 10 seconds, it didn’t work, again for 30 seconds and the same thing, then I waited for 2 minutes and still the error pops up (every time I had to clear the log before starting)

I started browsing the forums and came across this advice: Good afternoon, you need to do it together. One person removes the cover from the 20A fuse and pulls the fuse out a little so that it can be easily pulled out. The second turns on the boiler and within 3 seconds you need to pull out the fuse and turn off the heater, wait a few seconds and insert the fuse - This is a universal circuit for Thermo TOP EVO. If you have Thermo top C\E\Z

I take a friend, do this tricky procedure with him and webast started working!))

Maybe someone will find this advice useful so as not to go to the Webasta dealer and save their money

Webasto Thermo 50/90S/90ST/230/300/350

If a malfunction occurs, an electronic lock is activated and the heater issues a fault code. Check the fuses and plug connectors for their serviceability and tightness.

The blockage can be removed by restarting the heater or by briefly removing the blue 15 A fuse on the heater cable harness when the heater is on.

After installing the fuse, the heater turns on. If the blockage is not removed, you need to determine the cause of the malfunction.

Note! Wesasto heater blocking is a special operating mode. The blocking is activated if the self-diagnosis system detects a malfunction (one or more), further work with which may be unsafe, both for the heater itself and for the vehicle on which the heater is installed. The blocking itself is not a malfunction, but is a consequence of one or more malfunctions. Moreover, the cause of the malfunction may not be in the heater at all.

Webasto timer 1531

If the heater is equipped with a 1531 timer (with alarm), after an emergency lockout, the following error codes are displayed on the timer display.

* – only for preheaters Webasto Thermo 230/300/350

If the heater as a control element is equipped with a switch or timer 1529 (without an alarm clock), then error codes are transmitted in the form of light signals (flashing). Turn off the heater, after short 5 flashes, long pulses are issued.

The number of pulses corresponds to the number after the letter F given in the table above.

Webasto HL32 Heater Room Thermostat

Proper packaging, shipping to the work site.

Friends! Before sending, I advise you to put the board in an antistatic bag or wrap it in a sheet of paper. On top, you can wrap the board with bubble wrap or any other packaging material. A board packed in a plastic bag may be damaged by static electricity during transportation or unpacking procedures. Boards damaged by static electricity cannot be repaired!

You can bring the payment in person, or send it by any transport company to my address or the address of the delivery point. I prefer to work with CDEK and Boxberry. If there are no transport companies in your city, you can send the parcel by Russian Post.

On the picture. An example of safe board packaging.