Car dashboard repair _ car dashboard can be repaired _ car dashboard repair how much money

The car dashboard is a device that reflects the working conditions of each system of the vehicle. Common fuel indicators, cleaning fluid indicators, electronic throttle lights, front and rear fog lights and warning lights.

The instruments of different cars are different. However, the general instruments of the general automobile include a speedometer, a tachometer, an oil pressure gauge, a water temperature gauge, a fuel gauge, a charging meter, and the like.

A variety of indicator lights or warning lights are produced under the mask of modern car dashboards, such as coolant level warning lights, fuel level indicators, washer level indicators, charging indicators, and far and near light dimming indicators. Transmission gear indicator, brake anti-lock braking system (ABS) indicator, driving force control indicator, airbag (SRS) warning light, etc.

Speedometer

The speedometer actually consists of two tables. One is a speedometer and the other is an odometer.

Traditional speedometers are mechanical. A typical mechanical odometer is connected to a flexible shaft. There is a wire cable inside the flexible shaft. The other end of the flexible shaft is connected to one of the gears of the transmission. The rotation of the gear drives the wire rope to rotate. The wire cable drives a magnet in the odometer cover to rotate. The hood is coupled to the pointer and places the pointer in the zero position by the balance spring. The speed at which the magnet rotates causes a change in the magnitude of the magnetic field lines. The balance is broken and the pointer is therefore driven. This speedometer is simple and practical. It is widely used in large and small cars. but. With the development of electronic technology. Many car instruments now use electronic speedometers. A common one is to take signals from the speed sensor on the transmission and deflect the pointer or display the number by changing the pulse frequency.

The odometer is a digital meter that rotates the counter drum by meshing the drive gear of the counter drum with the worm on the speedometer drive shaft. It is characterized by a full circle of the upper drum. The next stage drum turns 1/10 laps. Like the speedometer, the current odometer also has an electronic odometer that takes the mileage signal from the speed sensor. The mileage numbers accumulated by the electronic odometer are stored in a non-volatile memory and can be saved in the absence of electrical state.

Tachometer

The tachometer is usually set in the instrument panel. Placed symmetrically with the speedometer. The tachometer works according to the magnetic principle. It receives the pulse signal generated when the primary current in the ignition coil is interrupted. Convert this signal to a displayable speed value. The faster the engine speed, the more pulses the ignition coil produces, and the greater the speed value displayed on the meter.

Cars are now generally electronic tachometers, with pointers and LCD digital displays. There are digital integrated circuits in the table. It drives the pointer to move or digitally display the voltage pulse sent by the ignition coil. There is also a tachometer that displays the speed value after the pulse signal is taken from the generator and sent to the tachometer circuit for interpretation. However, it is affected by factors such as the slip of the generator belt. The values ​​are not very accurate.

Oil pressure gauge

The sensor of the oil pressure gauge is a piezoresistive sensor. Secured to the engine oil line with threads. The contact pressure of the contact piece is moved by the oil pressure to change the resistance value and affect the amount of current passing through the meter to the ground. The drive pointer swings. Because the oil pressure has a certain pressure range, it is clear and clear. There are many automotive oil pressure gauges currently indicated by indicator lights. It remains lit if the engine is running. This means that the engine lubrication system may not be normal.

Water temperature gauge

The sensor of the water temperature gauge is a thermistor sensor. Threaded to the engine cooling water channel. The thermistor determines the amount of current flowing through the coil of the water temperature gauge. Thereby driving the head pointer to swing. 2. In the past, the cooling water of the car engine was made with tap water. Many automotive engine cooling systems now use special coolants. It is therefore also called the coolant temperature gauge.

Fuel gauge

There are two coils in the fuel gauge. On the "F" and "E" sides, respectively, the sensor is a variable resistor controlled by the height of the float. The change in resistance determines the strength of the magnetic lines of the two coils. It also determines the direction of deflection of the pointer.

The water temperature gauge and fuel gauge are also indicated by indicators. The water temperature indicator lights up to indicate that the water temperature is too high. The fuel indicator light indicates that the fuel is nearing the low point as an auxiliary reminder.

The car dashboard is serviceable and you can go to the repair shop or the auto parts city.

The price of car dashboard is different, there are expensive and cheap, the focus is to see the extent of your damage and where you go to repair, specifically go to the store to consult. Xiao Bian also summed up the price list for the maintenance of other parts of the car, just a reference, or the actual.

Note: The following prices are the basic reference prices. The small car van is generally based on imported cars. The domestic small passenger goods are domestically produced (small car, van), domestic large passengers and goods are domestically produced under the basic 5 tons. For large trucks, imported small goods or passengers and trucks with a capacity of more than 5 tons can also float up and down according to the basic price and actual conditions, but the floating speed is not allowed to exceed 10%. The repair items or other unlisted items can be discussed in both aspects. Negotiate

Automobile factory vehicle maintenance charge standard (engine part) unit: yuan

Car factory vehicle maintenance charge standard (engine, painted part)

Auto repair shop vehicle charging standard (electrical part)

Auto repair shop maintenance fee (chassis part)

Auto repair shop maintenance fee (chassis part)

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