Do not start "Webasto": reasons. Troubleshooting codes for Webasto

"Webasto" has become almost indispensable thing in the modern automobile world. All those lucky ones who have this pre-heater, in winter can avoid a lot of serious problems. But sometimes they do 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 instruction for this installation. Let's figure out what "Webasto" is, how to properly operate this system, we will analyze the reasons for its breakdowns, as well as error codes.

"Webasto": what is it?

This device is a pre-heater for the car engine. It provides the engine with an easy start in the cold winter months. One of the differences between this German pre-start heater is that it works autonomously.

Device "Webasto"

This pre-start element consists of five parts. It is an electronic control unit for the system, a combustion chamber, a heat exchanger, a pump for circulating coolant, and a pump for fuel pumping.

Operating principle

When the driver turns on the unit, a fuel-air mixture is fed into it, which then ignites and burns. Due to this, the cooling liquid is heated in the heat exchanger. The pump, responsible for the circulation in the heater, pumps the antifreeze throughout the system through the radiator-heat exchanger, thereby warming the engine. The unit is also connected to a regular interior heating system and controls the start of the fan. So, in the winter the driver can not wait for the warm-up of the power unit. The engine will quickly enter the operating temperature mode with a single key press on the remote.

Advantages and features

One of the advantages of this device is that you do not even need to approach the car to start the system. The start can be done from the window of your own apartment. "Webasto" many people love for its autonomy, and also for the fact that precious energy from the battery is not wasted for heating up. Of the serious drawbacks can be noted 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 simply turns off the installation. The machine will wait for its owner, being already completely ready for movement. However, if there is no activity for a long period and the temperature begins to fall, then at 64 degrees, "Webasto" will start and start its work again.

Self-repair

In summer, no one uses this device, because there is no special need for it. But here comes the first cold, the driver presses the button, but there is no result. And the independent diagnostics begins. The driver tries to find the problem, and often he does not succeed. But nevertheless, independent repair of "Webasto" is possible, although the manufacturer recommends contacting the diagnostic center of the company with all the breakdowns. Understanding the operating principle of the system and having the necessary knowledge, the device can be repaired on its own.

Possible malfunctions

All failures in the system can be divided into several types. These errors are "Webasto" in the internal memory of the device, but they often do not affect the modes of operation. Failures that arise spontaneously are also highlighted. This is automatic start or secondary switching. The cause of this behavior can serve as a malfunction in the heater circuit. "Webasto" also independently turns off due to errors. Similar malfunctions can occur in the electronic control unit or in the power supply system. The heater simply turns itself off, but the errors of "Webasto" in memory will not be saved. The second option is when the error is saved, and in case of restart, the system suggests turning it off and then turning it on again. Blocking occurs because of a number of duplicate codes. If the device crashes 4 to 6 times, then the system is locked and will save an error report. Independently unlock the heater will not work. It is necessary to contact the service and diagnostic center of the company.

Also, the blocking can happen due to overheating. If "Webasto" does not start, the reasons can be just in one of these locks.

Another reason is the error and shutdown due to low or high voltage. When the voltage rises and as a result reaches 11.5 V, the device shuts down. Then the automatic purge is started. You can measure voltage with the control unit. In the case of overstated voltages (usually at 16 V), the unit suspends its operation. When the problem is resolved, the auxiliary heater will again operate.

When "Webasto" does not start, other types of causes can be determined using a special diagnostic program for the Thermo Test PC.

Errors and their elimination

All the reasons for the failure of the WEBASTO preheater can be divided into four types. Codes, which the electronic control unit could not save, can be eliminated by checking the fuel supply. Then only replace the individual units or the heater itself. If there are fixed failures, then it is necessary to look at the type of problem in memory. In the electronic control unit, you can identify by error code why the "Webasto" does not start and replace the problematic nodes.

A list of error codes can be found in the instruction manual. For example, 010 is too low a voltage. A 047 is a short circuit in the fuel pump of the autonomic unit. If the integrated diagnostics system "Webasto" could not determine the failed unit, it is necessary to check the peripheral nodes of the mechanism.

For more information, why the "Webasto" does not start, you can find out by means of computer-based diagnostics. With the help of the program, we will accurately find out everything about the error and get detailed information on how to fix it. After troubleshooting, the code must be reset using the diagnostic software. Otherwise, the unit will not start.

"Вебасто" and problems with a diesel engine

Low-quality fuel quickly clogs the filter screen in the pump. As a result - a bad dosage of fuel, and then stop feeding. "Webasto" starts and stalls. Low-quality fuel adversely affects the candle, which is coked and no longer heats up to the necessary temperatures. If the installed "Webasto" on the diesel does not start, then the problems are completely similar to gasoline ICE. So, on diesel engines, the system may not work because of fuel, which contains more sulfur. It cracks the candle even more than gasoline. Therefore diesel "Вебасто" will fail out of operation more quickly, than gasoline. In addition, it is not uncommon for "Webasto" to not start in the cold. The fact is that in winter diesel fuel thickens and can not normally be pumped through the fuel line to the combustion chamber of the heater. This is a common problem, and nothing can be done with it. It is only necessary to clean the system and fill the tank with winter fuel.

Troubleshooting and Troubleshooting

Often, when "Webasto" is not started, the reasons may be hidden in the fuel supply. This happens in the winter on diesel engines in the event that the owner forgot to change summer fuel for winter. The heater can also be quite serviceable - it can then earn in normal mode in a warm garage. When the device started working normally in the heat, it is necessary to change the diesel, then blow the system, carefully clean it, change the filters and fill the new fuel.

There is another reason - the non-occurrence of fuel in the combustion chambers of the heater. If the installed "vebasto" on the diesel does not start, and the problem is not in the quality of diesel fuel, then the fuel does not reach the pump. In this case, the sound of the element will be quite loud and clear. Another reason can be in the air suction when the fuel line is damaged. It is also recommended to check the solenoid valve - it often accumulates plugs. To check the air pressure, you can use an ohmmeter. The normal figures are 134-154 Ohm. When carrying out the diagnostic, any washing liquid is supplied to the tube. After the fuel system has been tested, the repair of "Webasto" continues with the diagnosis of electronics. It is necessary to check the condition of fuses F1 to F3. Burned-out ones must be replaced. After that you should check if the unit will work. Then check the operation of the timer. To do this, measure the current in its connector. If the voltage does not pass, then the timer must be completely replaced. Then check the stove, and look at the status of the terminals. They can be oxidized, which is why the current is blocked. Also check for integrity of all wires. Depressurization can be seen on the plug. Next, remove the blocks.

If "Webasto" ("GAZelle" is not an exception) is not started, then the unit can be blocked due to the fact that all errors are corrected, but data on this have not yet been received in memory. From the control unit, the power is removed for three seconds. This is done by removing the fuses. Then the element must be put back in place. Then you can turn on the device. Then the first two steps are repeated. If everything turned out, then the system will work in the regular mode. So you can solve the problem when "Webasto" starts and stalls, after working a couple of minutes. This behavior is due to the blocks in the electronic control. Erasing and removing errors will help to solve this problem.

Conclusion

As you can see, this is a useful device that helps a car enthusiast to solve a lot of problems. Having experience in troubleshooting problems that arise with the unit, you can successfully use it.