Parktronic does not turn on. Parktronic does not work: possible sensor malfunctions
A serviceable and correctly configured parking sensor makes life much easier for a modern driver. However, the parking sensors, like any other electronic system, can fail. The breakdown of the parking sensors is most often expressed in the fact that it either squeaks incessantly (even when the car is not moving backwards), or is completely silent and does not respond to obstacles.
Causes of breakdown of parking sensors
Before proceeding with the repair of parking sensors with your own hands, you need to understand and accurately diagnose the cause of the malfunction. All the reasons why the parking sensors can break down can be divided into three groups:The parking sensor beeps constantly. What is the reason?
Most often, the reason for the constantly working parking sensors is sensor contamination. First, visually inspect each sensor and wipe them of dust and dirt. Very often, after washing, water gets into the parking sensors sensor (and in winter it also freezes). In this case, in order to eliminate the malfunction, the sensors need to be dried. If, after cleaning and drying, the sensor continues to beep for no reason, then it may be wiring problem. In this case, you need to "ring" the wiring to find a short circuit in the circuit.
Another reason why the parking sensors work too often is incorrectly adjusted sensitivity. The device "sees" an obstacle long before approaching it and starts to squeak, and the driver takes this squeak for a false alarm. In this case, there is only one advice - to reduce the sensitivity of the parking sensors. The parking sensors do not beep when there is an obstacle. What is the reason?
First of all, you should find out which sensor "does not see" the obstacle. It is very simple to do this: you need to close each sensor with your hand in turn, while the assistant must monitor the indicator of the parking sensors in the cabin.
If all sensors are normal, you can try increase the sensitivity of the parking sensors.Carefully inspect all sensors: perhaps the reason for their "silence" is in damage one of them. It happens that a pebble hits right in the center of the sensor and breaks the mirror of the parking sensor. If a damaged sensor is found, you can contact the service to replace it or do it yourself. At the same time, it is not necessary to install a "native" sensor, you can choose the one that is suitable in size and characteristics - if it does not match in color, you can paint it without problems. malfunctions in the computer However, in this case, it is better not to repair it yourself. Illiterate intervention in the operation of the electronic control unit can result in a new, even more expensive repair. Radar for car parking, which is better known as parking sensors, in last years has ceased to be a luxury of business class cars, and now it is offered as an additional option to almost any car. This system can significantly reduce the risk of the driver colliding with objects surrounding the car when parking in a confined space.
The principle of operation of the parking sensors is very simple. The car has built-in sensors that are triggered when approaching other cars. When the sensor is triggered, the driver is immediately notified about it. sound signal, which increases depending on the distance between objects, and also graphic image on the screen. Due to this, the driver has the opportunity, in case of a dangerous approach to an object, to stop in time to change the direction of movement.
Table of contents:Parktronic designs
IN this moment ultrasonic and electromagnetic parking sensors are actively used, which differ in their principle of operation. In Russia and the CIS countries, ultrasonic versions of the system are more common, which can be of two types - wired and wireless.
Ultrasonic parking radars are a system that consists of a "brain" (control unit) and ultrasonic sensors installed in the rear (and sometimes in the front) bumper to control the distance to nearby objects. The principle of operation of the sensor is extremely simple - it generates an ultrasonic signal that is directed away from the car. Depending on how the signal is reflected from other objects, the control unit calculates the approximate distance to them and decides whether it is necessary to notify the driver of the danger of a possible collision.
It should be noted that ultrasonic parking systems can be both wired, that is, the interaction between the elements of the system occurs directly using wires, and wireless. The wired version is more common and reliable.
The design of electromagnetic parking sensors is somewhat different from ultrasonic options. In such systems, a metallized tape acts as a sensor, which is attached to the inside of the car bumper. This tape creates an electromagnetic field around the rear of the machine. When any obstacle is in the zone of this field, the “brain” of the parking sensors understands this and notifies the driver. It is worth noting that for the first time electromagnetic parking sensors were introduced by Audi, which to this day actively uses them on its cars. Such parking sensors are considered more reliable, since the generated electromagnetic field does not have "dead zones", unlike sensors that can control a strictly defined area.
Please note: In Lately the development of parking sensors stepped forward. Now often parking radars are a part that allows the driver to even better control the presence of foreign objects around the car when parking.
Why is the parking aid not working?
As can be seen from the design of the parking sensors described above, such a radar is a very simple device that consists of a minimum number of components. Accordingly, there cannot be many reasons for the malfunction of the parking sensors. There are the following main reasons why the parking sensors do not work:
The above are the main reasons why the parking sensors do not work. As you can see, they are quite commonplace and do not differ much from the causes of failure of other electronic equipment in the car.
How to determine the cause of a malfunction of the parking sensors
The task of the parking sensors is to determine the presence of an obstacle in front or behind the car, and inform the driver about it. If the system does not do this, or does it with errors, you should understand the reason in order to fully use it in the future.
If the parking sensors have recently been installed on the car, and immediately it does not work correctly, most likely, the reason for this is a factory defect or improper fastening and connection of the system elements, which needs to be checked.
Parktronic sensor diagnostics
In a situation where the previously functioning parking sensors stopped working, the first step should be to pay attention to whether this is due to contamination of the sensors, which is a very common problem. Inspect the sensors for dust and dirt. It is better to clean them immediately upon inspection in order to exclude the possibility of their malfunction due to contamination.
Important: When cleaning sensors, pay attention not only directly to their sensors, but also to the attachment points, and also carefully check that the devices were securely fixed.
When cleaning sensors does not work, you need to make sure that they work at all. Determining the performance of the sensor is very simple:
- Start the car engine at idle;
- Move your finger in turn to each of the sensors. The working sensor should vibrate or “pop” slightly. If this does not happen, then the sensor is out of order, and it needs to be replaced or repaired.
The complexity of repairing the sensor depends on the cause of its failure. Some problems can be fixed on their own, some can be solved by the wizard in service centers.
Please note: The cost of parking sensors can vary greatly, and the expediency of repairing the sensor by specialists will differ from that. Often it is more profitable to simply replace the device with a new one.
Quite often, the parking sensors sensor fails due to water ingress into it. This may not be noticed during a visual inspection of the device, so the first step in repairing faulty sensor it must be removed from the vehicle. Then dry the sensor, reconnect it to the wires and check the operation. If the situation has not changed, most likely the problem is more serious. Try to disassemble the sensor and inspect the membrane installed inside for damage. If there is damage, the membrane will need to be replaced. It is important to note that similar work It is better to entrust the specialists of service centers.
If the PDC sensor is faulty and needs to be replaced, this is extremely easy to do. It is enough to disconnect the old sensor from the wires and install a new one, securely fixing it in place. But here it is important to note a few nuances:
Diagnostics of the metallized parking sensors tape
Diagnosing a malfunction of the metallized tape of electromagnetic parking sensors is much easier than checking the health of ultrasonic sensors. The simplest device of the tape indicates that it can only work incorrectly if it is physically damaged. Inspect it for defects - deep scratches, cracks and other damage. If the tape is intact, you should look for the cause of the parking sensors malfunction in other elements of the system.
Diagnosis of the "brain" of parking sensors
Least of all, the parking sensors control unit fails, but a similar problem can still occur, which means that you need to consider ways to diagnose the device. There are two methods for checking the device - visual inspection and short circuit diagnostics:
It is important to note that the parking sensors control unit is practically indestructible, and even more so independently. If a short circuit has occurred in it or the elements have burned out, most likely it will be necessary to replace the entire “brain”.
Want to buy Parking sensor? Can't find out which sensor is faulty? Read! All about checking parking sensors!
Parktronic helps the driver feel external dimensions car and control the distance to obstacles.
Location parking sensors may be different. They are mounted front and back. The sensors are made in the form of buttons, the function of which is to inform the driver about the distance to objects. The principle of operation of the sensors is based on ultrasonic radiation. The emitted ultrasound reaches the surface and returns, informing about the distance to the obstacle.
If the sensor has ceased to perform its functions, then it has failed. It needs to be found and changed.
Methods for determining a non-working sensor
There is an easy way sensor checks without the use of additional devices and spending a lot of time. When approaching workers parking sensors you can hear a dull click. To do this, you need to get closer to the sensor: put your ear or substitute your phone, make a record.
To start checking the sensors, the car starts, the handbrake is tightened and reverse gear is engaged. The absence of clicks indicates a malfunction of the sensor and the need to replace it.
Another verification method is used when parking sensors located front and back. The presence of the transmission in neutral activates the sensors. The car starts, put on the handbrake. The working sensors vibrate gently. It can be felt with a light touch. All sensors are tested. If vibration is not felt, the sensor is broken.
Cold wet weather can interfere with the functioning of the parking sensors. Sensor recovers as it dries. But after that, you need to make sure it works.
Checking sensors with a vag is somewhat difficult. This requires additional skills. In addition, this procedure takes more time.
Replacing a broken sensor
If you find a failed sensor, replace it. First you need to buy the same model in the same color. The mass is turned off (minus on the battery). The broken sample is removed and replaced with a new one. The mass is thrown back, the car starts, the operation of the new sensor is checked.
It must be remembered that the operation sensor happens with a delay. Move slowly enough to be able to react.
As we all know, parking sensors are the eyes of the driver, not even the eyes, but the sixth sense, which helps to feel the dimensions of the car and avoid minor accidents. This system is most often located in the rear most protruding part of the car, usually rear bumper, however, there are cars in which the parking sensors are located both in the rear and in the front. Outwardly, the sensors resemble buttons, their job is to recognize the distance from the car to obstacles. The sensors work on the principle of ultrasonic radiation, the ultrasound bounces off the surface and thereby notifies the distance to the object. However, if our system does not notify us of the distance or does not work at all, do not be afraid, most likely one of the sensors has failed and needs to be found and replaced.
I will tell you how to check in a simple way, it is used by specialists, since it does not require any additional devices and practically does not take us time. Experts say that the working sensors of the parking sensors make clicks, but in order to hear them, you need to get as close as possible to them and substitute your ear, some people who are too lazy to carry out such checks thought of recording clicks on the recorder, they turned on the recording on the phone and brought the phone to each sensor for ten seconds. And so they went around the whole car. But before these operations, it is necessary to turn on the ignition, put the car on the handbrake and reverse gear, after all this, we check the clicks, if they are not heard at all, then the sensor is faulty and needs to be replaced.
There is another way, also the least expensive and fastest. If on our car the sensors are both front and rear, it is necessary to bring the gearbox to the neutral position (this is how the front and rear parking sensors are activated), then again put on the handbrake and start the car. Working parking sensors emit some kind of vibration, so you can just check with your finger, you need to feel all the sensors. If the sensor emits a slight vibration, then it is working.
If the parking sensors stop working in cold wet weather, and when it dries out, the work is restored, it is also necessary to check the sensors, one of them starts to fail, the problem is solved by replacing the sensor. Some people complicate their task and check the sensors with a vag, but this requires additional skills and will take this process a little longer.
Now that we have found a non-working parking sensor, and purchased the same one, of the same color in return, it is necessary to disconnect the ground (minus on the battery), pull out the sensor and change it to a new one. Then we throw the mass back, start the car and we can check the operation of the parking sensors. However, it is worth remembering that even working sensors are triggered with a delay, so the movement by car should be carried out very slowly.
How to check the parking sensors? Photo and video.
Below you will find interesting video video clip.
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Parktronic or parking radar is a small device that is not only. It also provides safety on the road by alerting you when an obstacle or other vehicle is too close. And if the car has broken down or the parking sensors simply do not work, then for inexperienced drivers, as well as those who are used to his constant prompts, this can be a real problem.
How to determine that the parking sensors have stopped working?
Determining that the parking sensors have stopped working is quite simple. If the car is parking, then there is an indicator on the dashboard that will indicate that it has broken down. But if you installed an acoustic parking system yourself, then in order to identify a breakdown, you should observe its operation. He will either be constantly silent until you crash into something, or he will constantly give signals about non-existent obstacles. But to recognize what exactly failed is a little more difficult.
Determination of the cause of the breakdown of the parking radar and its repair
Parktronic malfunctions are often associated with the failure of one of its elements. Acoustic parking system consists of several important components.
- The control unit is its main part, which is responsible for the operation of the entire system.
Quite infrequently, this element fails. How to check the performance of the electronic control unit? You need to disconnect it first. Then the terminals of the ohmmeter should be attached to the terminals. If the ohmmeter shows nothing, then it lies just in the electronic control unit. If you are not an electrician and do not have sufficient experience in working with such mechanisms, it is better not to repair the parking sensors with your own hands. Here it is worth contacting the experts.
Incorrect setting of the control unit can also be one of the reasons why the parking radar does not work. If the control unit is set to high sensitivity, the parking radar will respond even to non-existent obstacles. Or the reverse situation, he does not notice the existing obstacles. This may indicate that the sensitivity is too low. In both cases, it is necessary to reconfigure the parking radar.
- Display devices: monitor (it transmits data regarding the presence of obstacles and the distance to them) and (it emits warning signals). These elements are the least likely to fail, as they work in the most benign conditions, inside the car.
- Sensors or metallized plates are transmission devices that detect the presence of obstacles nearby. In a car, there can be from 2, 4, 6 or even 8. The most common are 4 or 6. If 4, then they are all installed on the rear bumper. If 6 are installed, then 4 of them are on the back, and 2 on front bumper. The latter option allows you to control not only the space behind the car, but also in front. The principle of operation of the transmission device is very simple. It gives ultrasonic signals, which, when hit by an obstacle, return back. The system reads the round-trip time of the signal, thus calculating the distance to the interference.
The parking sensors monitor fails less often than other elements, as it is located inside the car Sensors most often fail, because they are the most affected external environment. They are installed on the bumper of the car, and, accordingly, dirt, snow or water can get on them.
How to determine that the parking sensors are not working? Simple enough. You should start the car and touch the sensor with your finger. A serviceable one always vibrates slightly, and if touched, it should make a crack. If this was not found, then the reason is precisely in it.
But before you go to the auto repair shop, you can try to repair the parking sensors sensor with your own hands. The first thing to do is to clean and dry it. If after these manipulations the system did not work, then perhaps the cause of the breakdown lies in the membrane. In order to identify a malfunction of the membrane, the sensor should be opened. If it is faulty, it must be replaced. However, it is not recommended to change the membrane yourself; it is better to entrust this to an auto mechanic.
But sometimes another situation happens, a pebble got into the sensor, which disabled it. In such cases, the repair of the parking sensors sensor is no longer possible, it only needs to be changed.
If there are metallized plates on the machine, then the presence of any external damage will indicate the complete failure and the need to replace them.
How to replace the sensor or plate? Simple enough. You should buy a device that is suitable in size and technical parameters in a spare parts store and mount it in place of the broken ones. If the sensor differs in color from what it was, then fixing it is quite simple, it should be repainted.
Sometimes the sensors start to work for no reason, signaling the presence of non-existent obstacles - the cause of the malfunction may be related to contamination, sticking of sensors or metallized plates. If you have sensors, then you should clean them from dirt and snow, if there is moisture, then remove it. In the event that plates are installed, then it is better to remove them, because water and dirt can accumulate not only on the surface, but also under them. After that, the bumper must be washed and dried. Only then can you put dry and clean plates back.
If the parking sensors do not work after washing or in hard frost, then the problem may lie in the wiring, more precisely, in the connections that get wet. Here, too, the usual drying of sensors and wiring connections will help.
How to protect yourself from breakdowns?
In order for the parking radar to serve for a long time and you do not have to puzzle over why it does not work, how to fix it, it is very important to take care not only of its correct installation and be careful during operation.
Periodically check the sensors and the control unit for dirt and liquid and remove it in time. If instead of sensors there are metallized tapes, then it is necessary to check the presence of moisture and dirt under them.
It is also important to strictly follow the instructions as well as the operation of the acoustic parking system. After installation, you need to configure it correctly.
Accurate adherence to the instructions, proper care of the system will contribute to the trouble-free operation of the parking radar for many years.
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