Repair and service. How to install a shock sensor on a standard LADA car alarm Installing a shock sensor

In order for your car alarm to fulfill its mission without failures or false alarms, it must be configured correctly. In particular, adjust the shock sensor. This is quite easy to do, so you can do this adjustment of the alarm sensitivity yourself.

First you need to find the location of the sensor. In most cases, this device is hidden hidden in the car under the panel (directly below it or below, on the floor). To find this secret place, you can use the instructions for the car alarm, where the sensor will be designated as VALET (if it is installed according to this manual). Carefully inspect the found sensor - it should have a special adjustment screw, with the help of which the desired sensitivity level is set. There are arrows on the sensor body in the area of ​​the adjustment screw that will tell you where to turn the screw to increase or decrease the sensitivity of the alarm. To turn the adjustment screw itself, use a screwdriver of suitable size.


Now set the car alarm and after a minute test its sensitivity. Because the security system should be triggered specifically by jolts, its operation should be checked by jolts or blows. To do this, push or hit the car (body or windshield) - first slightly, and then harder.


If the alarm sounds after a light touch to the car, you have overdone the system sensitivity level and it needs to be reduced. If the siren does not turn on even after several intense impacts, the shock sensor should be adjusted towards greater sensitivity.


After successfully setting up a car alarm shock sensor, such unpleasant surprises as false alarms due to temperature changes or noise effects should no longer bother you. But remember that too low sensitivity of the sensor can also play a role in reverse side– the alarm will not work not only in the presence of harmless outside interference, but also in the event of an attempt to break into the car. Therefore, if you are not sure that you will do everything correctly, entrust the installation of the system to specialists.

An incorrectly adjusted car alarm causes inconvenience to the car owner. The result of errors when setting up the alarm shock sensor is too frequent activation of the alert or a complete lack of reaction to what is happening. Follow the instructions below and you will quickly, without special effort set the car alarm sensors to the desired mode.

Why do you need to change the sensitivity of the shock sensor?

The process is performed in the following cases:

  • if the alarm is too sensitive (triggered by thunderstorms, passing cars and other interference);
  • if she does not react in any way even to impacts on the car.

Before starting work, you need to determine what causes the car alarm to not work properly. There are several most likely reasons:

  • components are poorly secured;
  • The car alarm parameters are incorrectly adjusted.

Check that the sensors and electronic alarm control unit are securely installed. Perhaps the problem can be solved by simply returning them to their place.

Adjusting the sensitivity of the shock sensor

The general sequence of actions when setting the sensitivity of the shock sensor is given below:

  1. Disconnect the battery. Attention! The documentation for some car alarms prohibits this. In this case, remove the light fuse to prevent the battery from losing power too quickly.
  2. Locate the installation location of the alarm sensor. In most cases it is located under the front panel, but it is possible different variants. Read the instructions for the vehicle. Look for the term VALET on it - this is the standard designation for a shock sensor.
  3. Before you start adjusting the parameters, disable the security mode. Switch the system to programming mode. The exact method for adjusting the shock sensor depends on the features installed car alarm. In older models, a screw is used for this; in new models, buttons are used.
  4. Pay attention to the alarm sensitivity scale. It indicates the available levels. Their number usually ranges from 0 to 10, where 0 is a complete lack of reaction to events, and 10 is the maximum possible sensitivity. In new cars the indicator is usually set to 5.
  5. It is not recommended to increase the sensitivity of the shock sensor too much. Most alarm models are designed for approximately 10 alarms per cycle, after which the car will have to be reset to security mode.

The choice of specific car alarm parameters depends on the characteristics of the car (its weight, method of installing security components) and the situation in the parking area. When choosing a suitable indicator, it is recommended to constantly check the stability of the sensor response. Select a specific number and lightly hit the body. If there is no reaction, hit a little harder. Determine the force at which the security alarm sounds.

To achieve maximum accuracy, put the car in security mode and wait about three minutes, then check the sensitivity of the alarm. After each check, wait a couple more minutes. In many protective systems, car alarms are switched to high sensitivity mode if the housing has just been subjected to mechanical stress.

Sometimes it is possible to set the alarm in semi-automatic mode. In this case, the sensor is switched to the “learning” mode, after which it is necessary to apply blows of varying strength to the body. However, remember that car alarms perceive mechanical loads on different parts of the car differently. For example, a blow to a wheel is “felt” weaker than a blow to the hood.

Setting up the Starline alarm shock sensor

Let's look at the regulation process using the example of the widely used Starline A61 car alarm.

The process is quite simple. The only tool you will need is a thin Phillips screwdriver. The main difficulty is finding an installed Starline device. IN official instructions it says it should be placed at the base of the steering column. IN service centers Typically they follow this instruction by placing the alarm component in the column next to the pedals.

The Starline shock sensor is equipped with subtle mechanisms for adjusting its parameters. A screwdriver is used to adjust the sensitivity. If you turn the mechanism to the left, the sensitivity of the car alarm decreases, if you turn it to the right, it increases.

During the process, it is recommended to periodically check the effectiveness of the work. The Starline A61 car alarm operates on the piezoelectric effect. When a car body is hit, a sound wave is generated, which propagates through the internal components and reaches the Starline impact sensor. Optimal performance is only guaranteed if the sensitive alarm component is securely fixed to metal.

To adjust the sensitivity of the car alarm, turn both zones down and add a warning zone (located next to the green LED). Set the car to security mode and wait about a minute. Now hit her body firmly. If the device sensitivity is too high, lower the setting. If the alarm doesn't work, increase it. In a similar way, you can configure the full alarm zone of the Starline car alarm.

The main difficulties when setting up

If, after adjustment, the Starline shock sensor continues to respond incorrectly, try resetting the parameters. Information on how to do this is provided in the instructions. If there is no information, it is better to go to a car service center - they know how to work with any type of alarm system.

The process of regulating the Starline car alarm is relatively simple. The main thing is to correctly check the result and set the desired level of sensitivity. Remember that if you have no experience in solving such issues or if you want to adjust the alarm as quickly and efficiently as possible, it is better to go to a service station.

The impact sensor reacts to the impact of the vehicle body with external environment. As a rule, the sensor is part of the general alarm system and is configured when it is first launched. Many experts recommend installing a shock sensor on a metal part of the body inside the car.

Moreover, this must be done so that the sensor is located symmetrically relative to the axis of the car. Shock sensors should not be installed on the bottom of the car, as it can be triggered by resonant vibration of the body due to the fact that a car passes nearby. It is also not recommended to install the device on plastic parts of the machine. This will reduce the sensitivity of the sensor. The best space to install the sensor is the shield between the engine compartment and between the vehicle interior. Choosing a good shock sensor for a car is more difficult than choosing ankle boots, so be careful when purchasing. Check that the device is working properly and ask the seller to test it for you.

The shock sensor has four wires. It is connected to a special four-pin connector of the main alarm unit. In the factory configuration, the sensor itself is glued to metal parts of the body using double-sided tape. But many motorists still prefer to attach it to the car using special fasteners on self-tapping screws. During installation, the sensor can be adjusted using resistors manually, which are available on the sensor panel. Each resistor plays its role. One is responsible for warning about physical force, the other gives a signal when there is a strong impact on the car.

Both sensors must be unscrewed all the way (to zero). After this, gradually increase the sensitivity of the warning zone. After setting the warning sensitivity zone, proceed to setting the alarm sensitivity zone. It is configured in the same way as the first, only in the second you need to add a few more revolutions.

Once done, close your car door and set it to alarm. After this, check the car for sensitivity: hit it lightly on the body. It is better not to knock on the roof, doors and hood, as dents may remain. If the sensitivity turns out to be low for you, then tighten the resistors a couple more turns.

And which gives to the owner sound signals about what's happening. It is usually associated with common system alarm, and its configuration occurs at the first start.

Experts recommend installing a shock sensor on a metal part of the body inside the car so that it is symmetrical relative to the axis of the car.

The underbody of the car is not suitable for placement sensor, because it can work if there is a body collision due to heavy vehicles passing nearby.

Plastic parts of the vehicle body are unsuitable for installation, because sensitivity decreases sensor.

The best place is a shield located between the car interior and the engine compartment.

  • Shock sensor has four wires connected to the four-pin connector on the main alarm unit. Sensor having factory equipment glued to the metal part of the body with double-sided tape. However, car owners who respect themselves prefer to use a special one so that install a shock sensor.
  • It is manually adjusted during installation using resistors located on the sensor panel. One of the resistors warns against physical action (mild impact), the second gives an alarm in the event of a strong impact on the car body.
  • You need to unscrew both regulators all the way sensor(to zero). Start to slowly increase (several circles of rotation) the sensitivity in the warning zone.
  • Once you have completed setting the sensitivity in the warning zone, use the same diagram to set the sensitivity of the alarm zone. To adjust it, you need to use 1 or 2 turns more than the warning zone.

After adding, close the alarm. Next, having set it to security, check the sensitivity of the car by tapping your hand on the body. There is no need to knock on the hood, roof, or doors, as dents may appear there. It is better to knock on the racks from the rear and. If sensitivity is insufficient, twist the resistors a few more turns.

  • Shock sensors By design there are electromagnetic, piezoceramic, and also microphone.
  • According to the method of response, sensors can be two-level or single-level. Two-level or two-zone sensors differ in strengths and weaknesses blows by car and in different ways react to external influences (alarm and warning).

Almost every car security system and modern car alarm brands today are equipped with a security sensor or, as it is commonly called, a shock sensor. It is necessary to timely notify the owner of any external influences to his vehicle. Today we will discuss where to install the shock sensor.

Explore modern car alarms http://radar-detector-expert.ru/autosignalizacii famous brands, which have proven themselves excellent among car enthusiasts. Nowadays, almost every car is equipped with an automatic alarm system and has wide choose by the price range and features of these devices.

These devices differ only in their physical principle, but they have the same operating algorithm: when they detect extraneous movements towards the machine, they send a signal to the system.

At the moment, there are two main opinions regarding the location of the shock sensor in the car. Where to install the shock sensor - supporters of the first argue that the shock sensor should be installed using metal parts bodies that have a rigid and durable attachment to the surface of the car itself.

Their opponents are confident that this option is unacceptable, since iron dampens the amplitude of vibration and thereby worsens the quality of the device’s operation; the shock sensor’s response to external influences weakens.

Even adding sensitivity in the settings to the device will not solve this problem, because in this case it will go off at the slightest sound and disturb the owner over trifles. Where to install the shock sensor - as an alternative, it is proposed to install the shock sensor on the wiring harnesses, where plastic clamps will serve as fasteners.

Some car service workers prefer to mount the shock sensor in the center of the cabin. vehicle, considering this place the most suitable. This action is not without meaning, since when located in the middle of the car, the shock sensor provides optimal sensitivity to external influences on all parts of the body. The most important thing here is that the device is firmly installed.

Recently, the shock sensor began to be mounted on the alarm board. This solution is the most profitable in material terms, but its effectiveness is noticeably reduced. This happens because it is almost impossible to find a place for such a device that will be inaccessible to burglars.

Where should I put the shock sensor? We can conclude that the shock sensor needs to be installed where it will stably provide signals without false reactions during loud sounds, strong winds and other external influences.

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