Do-it-yourself parking sensors for Largus

Standard devices

The standard parking radar kit for Largus Cross includes:

• 4 sensors with wires and connectors;
• Control block;
• LED indicator for displaying information;
• power wires;
• cutter for making holes;
• installation guide.

More functional and expensive devices may additionally include 4 sensors for installation in the front bumper. The transmission of information in such safe parking systems can be transmitted both by wire and by radio.

Some standard kits do not have a display. In such cases, the parking sensor warns the driver about the presence of an obstacle with an audible signal. The pulse frequency increases as you approach the obstacle. Parking sensors with a beeper are easy to install, since there is no need to lay wires to the indicating device. The speaker is mounted either on the ceiling near the rear row of seats or on the inside of the loading door.

Some models of parking radars are equipped with an information indicator with the ability to mirror the readings. They can be installed on the interior mirror or on the ceiling in the rear of the car. In this case, the driver reads the information by looking in the mirror. The indicating indicator on Largus Cross is built into the console and is equipped with a visual and audio alarm. The display shows graphic information about the side of the obstacle and the distance to it.

Lada Largus Cross will soon receive parking sensors

The luxury Lada Largus Cross , in which the developers integrate a rear parking radar, will begin to be sold on our car market a little later than the regular version of this model. This delay is most likely due to the introduction of this particular new functionality for the Largus Cross, since a self-respecting developer will never release a car that has not been fully tested into series. Approximately this conclusion suggests itself from the explanations of a source close to the production of Largus Crosses, from which the approximate start date of production of the version equipped with parking sensors is also known: mid-summer 2020. There is very little time left to wait. The Lada Largus Cross , which can park itself, received a higher ground clearance. The difference with the ground clearance of the regular version of the model is two and a half centimeters and ultimately gives 170 millimeters from the cardan to the ground. Apparently, this increased ground clearance can be considered the culprit for the delay in serial production of the model. After all, the parking sensors are equipped with software that is optimized to work with the previous 145 mm ground clearance, and an increase in ground clearance even by such a small amount can affect the correct operation of the device. A delay of a month or a month and a half for testing a program is a common occurrence among programmers, especially when human life and health depend on the operation of their program code.

Meanwhile, regular Lada Largus station wagons, equipped with parking sensors, have already begun to be produced from AvtoVAZ assembly lines. The new luxury equipment includes an anti-lock braking system (ABS). It assumes the presence of as many as two front airbags. In the cabin in hot weather you won’t be frying eggs on the dashboard, since the Lada Largus Cross has an advanced air conditioner. The multimedia system included in the package will allow you to enjoy not only the rumbling of the engine, but also your favorite music. The driver's seat has received more comfort in the form of lumbar support and adjustment: it can now be adjusted in height. The front seats, among other things, can be heated, the exterior mirrors are electrically operated and heated, and updated foglights are also installed.

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Under the hood of the coolest Largus lies a 1.6-liter gas engine capable of developing 105 horsepower. It is paired with a five-speed manual transmission. The rear bumper of Lada Largus became the installation site for three sensors that emit and receive reflected ultrasound. It is in this way that the parking sensor detects obstacles in the path of the car when parking it. The system scans a space of 160 centimeters at an angle of 170 degrees from the location of the sensors.

The basic Lada Largus has a price tag of 479 kilorubles. Lada Largus Cross is sold for 597 thousand 500 rubles.

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Sergey June 6, 2015

Published in: Automotive news - new cars

Tags: Lada Largus Cross, Lada Largus Cross

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Which model to choose

The operating principle of parking sensors is based on the reflection of an ultrasonic signal from an obstacle and its reception by the sensor. Their number determines the size of the controlled area. The more sensors, the fewer blind spots behind the car. Due to the fact that the power of the emitters is low, the parking sensors can detect an obstacle at a distance of 2-2.5 m. The change in the distance to an object for different models is fixed from 1 to 10 cm, and the minimum operating distance of the radar is 10-30 cm. The characteristics and quality of parking sensors depend on the manufacturer.

The best selling kit is Spark 8M. The optimal number of sensors with a diameter of 18 mm allows you to detect an obstacle at a distance of 2.5 m and stop 10 cm from it. The device has a high signal processing speed (0.15 seconds), which makes it possible to record changes in distance every 1 cm. The device has an initial learning function that minimizes the number of false positives. During operation, the device performs self-diagnosis and reports problems with an audible signal.

Parktronic ParkMaster 4-DJ-92, in addition to sensors, includes a rear view camera. The equipment is connected to the standard head unit, since the package does not include a display. The device has a voice notification function about detected obstacles and the distance to them. The high reliability of the device made it popular among car owners.

DIY parking sensor installation

Today I installed this parking sensor.

The image has been reduced. Click to see original.

All the work, as my wife said, took no more than two hours and this is what happened.

The image has been reduced. Click to see original.

The image has been reduced. Click to see original.

I didn’t drill anything except the bumper; all the wires went through the standard holes.

The image has been reduced. Click to see original.

The image has been reduced. Click to see original.

Works great (only breaks about 5 cm)

Eliminating “snot” on the windshield →

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Additional comments:

How to install

Parking radar sensors are installed in the rear bumper. Work can be carried out without dismantling the body part. To properly install the parking kit on Largus, you must adhere to the following requirements:

• The distance between the sensors should be equal to 1/4 of the width of the vehicle, measured at the location of the most protruding body parts.
• Install the sensors on both sides of the middle of the bumper.
• The height of the location from the road surface should be 0.6-0.7 m.

Failure to comply with the dimensions has a negative impact on the adequacy of the readings - many false positives will appear.

To correctly mark the mounting holes, apply masking tape to the bumper. If the installation location coincides with the reinforcement of the body part, then you can move the sensor or drill the entire structure. The holes are made using a complete cutter. The sensors are installed according to the markings from left to right - A, B, C, D.

Failure to follow the placement order may result in a malfunction of the control unit.

The sensor wires are assembled into a bundle and secured with ties inside the bumper. The cable is inserted into the trunk through the existing hole. The connectors are connected to the control unit. The kit receives power when reverse gear is engaged, which is indicated by a short signal. Parking sensors, correctly installed on Largus with your own hands, will make parking safer.

How to connect and test

Power is supplied from the reversing light chip. If the display is installed on a dashboard or interior mirror, then the connecting harness is pulled along the floor of the car and raised along the A-pillar to the monitor. If the indicator is installed on the ceiling near the loading door or a beeper is used, there is no need to lay wires throughout the cabin.

After installation, the kit is checked for functionality. When the transmission is on, an object is brought to the sensors one by one until a signal appears. After this, measure the distance to the nearest sensor that detected the obstacle. The resulting value will be the boundary of the sensitivity zone.

To determine the minimum operating distance of the sensor, you need to install an object between the sensors (outermost and central) and put the Lada Largus in reverse mode. The distance at which the presence of an object is not determined will be the desired value. This method can also determine the “blind” zone.

If the parking sensors do not respond to the presence of objects in the work area, it is necessary to determine which element has failed. To do this, with the power on, lightly touch the sensor emitter. A working element produces clicks that can be felt by your finger. A malfunction may also appear in the connecting wires. Therefore, there is no need to rush to throw away the sensor without checking the integrity of the lines.

The functionality of the unit is checked by connecting a known-good sensor. If the kit reacts to objects, then the unit is working. Defective elements must be replaced as soon as possible, since the efficiency of the system is reduced, which can negatively affect parking results.