How much does a brake pedal sensor (frog) cost on a Lada Granta?

The Kalina brake pedal sensor is a technical device that is used to monitor the degree of impact on the brake pedal. Quite often, car owners of the VAZ line complain about breakdowns or incorrect adjustment settings of the product.

Fortunately, the process of adjusting or replacing a part is not very difficult if certain nuances are observed.

Device characteristics and signs of wear

The brake pedal sensor is a technical device that monitors the degree of pressure on the brake pedal. It has a simple design. It is a “frog” with two contacts for opening and closing. A closed contact lights up the brake lights when the brakes are applied. The open contact serves to send a signal to the computer to remove the load from the engine and reduce the fuel supply during braking.

Signs of wear on parts:

Reduced engine responsiveness and power when pressing the pedal.
Error “P-0504” appears.
A short-term increase in engine speed when changing gears.

AVTOVAZ 21080-3720010-10, price - 110-115 rubles.

Performance diagnostics

Checking the functionality consists of: 1. Testing the product with a multimeter. 2. Disassembly and visual inspection of the internal components of the part. 3. Replacement sensor is not known to be good.

The first method involves alternately measuring the contacts of the dismantled sensor. The point is to check each contact individually and in pairs (second and third contact). This is quite convenient to do, since at the place where the contact chip is connected, all connectors are numbered.

The second method is used to identify faulty or deformed internal elements of the product (in most cases, damaged springs). Remove all internal elements and pay attention to their integrity and performance. In addition to the condition of the springs, pay attention to the metal contact plate. There should be no traces of oxidation or contamination. If there are any, clean them out.

The third method is quite simple and trivial. Install a new part to replace the one whose serviceability you doubt. Test the operation of the car by driving in various modes, when switching up and down gears. When the system is restored to normal operation, the malfunction indicator (check engine) should go out (if it does not disappear within 15 minutes, the error should be reset manually).

Factors on which the price depends

It is difficult to say how much money you will have to spend to purchase a brake pedal sensor for the Lada Granta. After all, the following factors influence the purchase price of such a technical device:

Design features.
Principle of operation.
Technical condition of the device.
Reputation of the manufacturing plant.
Originality.
The city where the purchase is being made and the degree of competition there.
The need to deliver the device and its cost.
Availability of current discounts on spare parts.

Adjusting the brake pedal sensor Kalina

If the sensor is in good condition, and incorrect operation of the internal combustion engine continues to bother you, try adjusting the product yourself. Please pay attention to the following features:

The sensor must be screwed in clockwise until the brake pedal begins to move down. Then you will need to slightly unscrew the product and secure its position using the fastening nut.
The result should be such that when there is no action on the pedal, the sensor rod is recessed into the housing, and when the pedal is applied, on the contrary, it is completely released from the housing.
As for the working gap, it is adjusted using two nuts (one at the top, the other at the bottom). The adjustment is carried out using the upper nut, which is tightened, and the lower one, on the contrary, is unscrewed. The entire process is carried out until the button is completely recessed into the body when the brake pedal is applied. However, you should not overdo the adjustment; in other words, you should leave a small gap or travel margin (approximately 2 to 5 millimeters).

Types of parts

All brake pedal sensors are divided into two types:

Push-button . Made in the form of a button that closes and opens contacts when you press the brake pedal with your foot.
Magnetic . They are activated when a magnetic field is formed. Such products are more reliable, durable, but expensive.

The following types of devices are available for sale:

New sample (Renault sensors).
Old style (on threads, nuts).

Depending on the country of production, the following spare parts are available:

Imported.
Domestic.

According to the manufacturer, the part for Lada Granta may be as follows:

Unoriginal.
Original.

Depending on the year of manufacture of the car, you can purchase a brake pedal sensor for a Lada Granta of this generation:

The first (2011-2018 years of production).
The first after restyling (from 2022 to present).

Depending on their technical condition, the following parts are available for sale:

New.
Used.

Depending on the place of purchase, the spare part may be as follows:

Taken from a specialized market.
Purchased at a vehicle dismantling point.
Purchased directly from an auto parts manufacturer.
Ordered from an online trading company selling auto parts.
Taken from a private person.
Purchased from a local retail or wholesale auto parts store.

Renault 8200168238, price - 400-450 rubles.

Instructions for replacing the brake controller

Pump out the liquid.
Place the vehicle on a support stand and remove the wheel.
Use a wrench to unscrew the two wheel pins.
Remove the brake drum.
Then, using a screwdriver, pull out the hook of the upper tension spring and remove the part. Perform the same manipulation with the lower tension spring.
Then remove the front pad and spacer bar, while disconnecting the pressure spring and lower the pad.
Remove the shoe lever from the parking brake hole, straighten the cotter pin and remove it from the parking brake drive.
Remove the washer and lever.
Install a new block and assemble the part in the reverse order.

Rear disc brakes on Lada Kalina

Approximate prices

In domestic auto parts stores and on the market, a new brake pedal sensor for Lada Granta cars can be purchased for 110-450 rubles . Prices for such technical devices are presented in the table below.

Detail number	Company manufacturer	A country	What sample is the part?	Cost in rubles
1118-3720010	AutoElectroArmature	Russia	old	240-270
1118-3720010-211.3720	AutoElectroArmature	Russia	old	350-400
11180-3720010-00	AutoElectroArmature	Russia	old	330-350
21080-3720010-10	AVTOVAZ	Russia	old	110-115
8200168238	Renault	France	new	400-450
1118-3720010	Electro Stavr	Russia	old	190-200

Electro Stavr 1118-3720010, price - 190-200 rubles.
A new model brake pedal sensor for the Lada Granta can be purchased from a private individual for 150-300 rubles . An old-style device sells for 100-200 rubles . If you need to deliver a part from another city, then you will have to pay for the service of the transport company. It costs about 200-400 rubles.

Causes of sensor malfunction and their symptoms

In most cases, the above error occurs because the sensor has not been adjusted properly. It is for this reason that the car owner notes the emergence of such problems as:

instability of the engine: it starts poorly or stalls immediately;
instability of speed.

The sensor combines two functions: it is both an element of the brake pedal position and a brake light switch. Most often, the malfunction is caused by the sensor misalignment already mentioned above, or by a broken spring. The problem that has arisen manifests itself by the “check” icon lighting up and error P0504 (implying a mismatch in the operation of this part).

Reasons for error p0504

The appearance of a malfunction and, as a consequence, error p0504 on the on-board computer has long been identified by specialists working at the Lada manufacturing plant, that is, at AvtoVAZ:

A short circuit that occurred in the side lights and brake light network. This could have occurred due to improper installation of the lamps.
Operating lamps that do not meet standards.

The essence of this design is that on the Lada Granta, instead of the usual “Stop” signal, a double one is installed. The first chain of this design is designed to operate at the moment when the brake pedal is depressed, and the second, on the contrary, when the pedal is completely released. When the driver presses the brake pedal, a signal is sent not only to the stop signal, but also to the controller. And when you release the pedal - exclusively to the controller. In this regard, when these factors are combined, the controller, during its operation, begins to “suspect” that not everything is in order with the “Stop” signal, and therefore issues a similar error.

What to do if it is not possible to purchase a sensor

It also happens that error p0504 appears at the most inopportune moment, for example, when you are in some outback and it is not possible to purchase a new sensor.

In this case, you should remove the same sensor and try to disassemble it. It is quite possible that the contacts in it simply burned out. A breakdown of this type is not uncommon, especially on the Lada Granta.

But there is another, fairly common reason for such a breakdown. This is a spring that has become so stretched over time that it can no longer perform its intended functions. To fix this problem, simply replace the spring.

And in conclusion, I would like to note that if error p0504 appears on the on-board computer of your Lada Granda quite often, then we can say with almost 100% certainty that the brake sensor is to blame.

To eliminate a constantly recurring problem, you should simply purchase a new sensor from a specialized store. It is very noteworthy that if your car is still under warranty, you can contact an authorized dealer to fix the problem, since the problem is covered under warranty.

If you do not have such a desire, simply replace the sensor with a new one. It will cost you about 200 rubles. Agree, quite a small amount of money, for the sake of saving which, it may not be worth contacting the service center with a warranty card.

By the way, you can also replace this element of the car either at a service center or with your own hands. But for the last step you will need the appropriate tool and some skills.

Reasons for error p0504

The appearance of a malfunction and, as a consequence, error p0504 on the on-board computer has long been identified by specialists working at the Lada manufacturing plant, that is, at AvtoVAZ:

A short circuit that occurred in the side lights and brake light network. This could have occurred due to improper installation of the lamps.
Operating lamps that do not meet standards.

Remember, before you go to a service station and tell the technicians about a similar problem, you need to check for yourself whether all rear lighting fixtures have been installed correctly and whether they correspond to the established parameters.

Carrying out pre-installation diagnostics

Before purchasing and installing a new sensor to replace a broken one, it is recommended to diagnose the old sensor and, if there is a breakdown, fix it yourself. There are two nuts on the sensor body, the first of which is located at the bottom, and the second at the top. The nut located at the top should adjust the clearance of the part (sometimes it is set incorrectly). This leads to disruption of the normal functioning of the button, therefore, you will need to set the gap so that there are no obstacles to its normal movement.

After the adjustment, the ECU error is reset, then you need to start the engine and wait about fifteen minutes, since errors are not recorded immediately. If error P0504 is not marked, it means that the cause of the engine malfunction was an incorrect sensor setting. If it appears again, you will need to replace this element with a new one.

How to change

The sensor is located slightly above the brake pedal lever. To find it, you need to look under the torpedo. On Lada Priora, Grant and Kalina, a 19 mm open-end wrench will be required for dismantling. The replacement process looks like this:

Remove the negative terminal from the battery
Disconnect the 2 plugs from the sensor.
Loosen the locknut with a 19 mm wrench (remember its approximate location).
Unscrew the sensor counterclockwise.
Install a new one and secure it with the adjusting nut.
Connect the battery.
Turn on the diagnostic equipment and clear the old error P0504.

The old sensor is quite repairable. In most cases, the cause of the malfunction is a broken spring. If you disassemble the body and install a new spring, the “frog” will work again.

Car owner's comment: On my Lada Grant, a spring broke in the sensor and began to close the contacts of the limit switches. When I left the car overnight, the ignition did not seem to turn off, which is why the battery ran out completely several times. I bought a new battery, but the problem did not go away until I made diagnostics and replaced the sensor. At the same time, the Check Engine did not light up.

Old style sensor

On Lada Granta, Kalina, Priora and Lada 4×4 cars with E-Gas, a brake pedal position sensor with article number 1118-3720010 is used.

Screw the sensor until the pedal goes down.
Turn the sensor slightly (counterclockwise 90 degrees) and secure with a lock nut.

As a result, when the brake pedal is released, the switch rod should be completely “recessed”, and when the pedal is pressed, it should completely come out of the switch body. Details in the video:

Error P0504 on VAZ cars

There is a problem that ruins the life of pretty good cars from the Kalina-2 series. I have a hatch, automatic. It's a normal car, it runs well, it's quite comfortable, there are no special problems.

But there is a problem that ruins life! This is error P0504 “Mismatched signal from the brake pedal sensors.” What's happening. When you are trudging through a dense and long traffic jam, you almost always drive on the brake pedal. You won't stop, but you won't accelerate either. It is at this moment that the error pops up. AvtoVAZ fights back, saying the driving style is incorrect. Great, but this is nonsense! Why doesn’t Mitsubishi give me such an error in the same situation? Well, okay, if it would just display an error and just reset it and that’s it. But the situation tends to get worse. It is expressed in the fact that the floating contact in the sensor over time begins to hang in a closed state, to become welded, simply put, and when you release the brake pedal, the car does not respond to the gas pedal and only after slamming your foot on the brake pedal, the contact falls off and the car starts to drive. Not only do you turn into a nuisance on the road with this behavior of the car, but also a dangerous nuisance, because the car can simply jerk when the sensor is triggered. As a result, a sensor costing 170-200 rubles makes a car worth 450,000 rubles stupid.

I disassembled the sensor, I categorically did not like how it was built inside, with a crooked spring, with contacts of different sizes, with traces of burning and welding. Moreover, I disassembled the sensor that came from the factory with the car. Over the course of 9,000 km, three of them have already been replaced, and we are planning to install a fourth, because the car again began to feel dull and flash with error P0504. People are starting to put transistors into the sensor circuit in order to reduce the current and voltage, so that the contact does not become welded, and to replace the sensor with sensors from Toyota and Audi. I myself bought a sensor from Audi and will install it. But explain to me what kind of disgusting this is? More precisely, ask AvtoVAZ a question - what kind of disgusting? After all, the problem with the sensor is not only on my car, type the question into Google, go to drive2 and you will see that almost everyone who has a K-2, Grant, etc. I'm struggling with this issue. Is this a design flaw, a bad supplier, etc.? It turns out I'm afraid to use the brakes on my car! Well, isn't it nonsense? What does AvtoVAZ’s answer about the wrong driving style mean? Driving on highways is easy and simple, but the car lives most of its life in the city, and the city means traffic jams! Do you have any driving style in traffic jams?