Mercedes Benz GLK260 High Water Temperature Fault Hello?

Mercedes-Benz GLK260 water temperature high fault, it is recommended to check the car's water tank thermostat and radiator, these parts of the failure may cause.

What should I do when I suddenly find that the water temperature is too high or even "boiling" while driving? Pull over, but don't turn off the engine right away. Because the temperature of the coolant is already very high, the cooling capacity has reached the limit, at this time, if the ignition is turned off immediately, the boiling coolant will stop circulating, and the excessive temperature will not be cooled, and the engine will be difficult to bear.

If the engine is left idle for a while, the constant circulation of coolant can still reduce the impact of high temperatures on the engine.

If the water tank is "boiling" when driving on some urban roads, you should pull over and turn on the double flash, hit ** rescue or slow drive to a nearby car service store for maintenance after the temperature will come down. If you are on some expressways, you need to pull over, but do not turn off the engine immediately, and then turn on the double flashing lights and place a fault warning sign behind the car. At this time, the air conditioner should be turned off, and the hood can be opened to speed up the cooling, but do not open the water tank lid immediately, so as to avoid accidents caused by the spray of high-temperature cooling water.

Because the water in the water tank has been boiled, the coolant has been lost a lot, if there is no spare coolant added, the engine water temperature will easily rise again, and it can only be driven at low speed. But if you are on the highway, it is still advisable to call a tow truck, after all, it is dangerous to drive at low speeds on the highway.

There are many reasons for the high water temperature of the engine or even "boiling", such as damage to the electronic components of the cooling system (thermostat, cooling fan), poor heat dissipation of the radiator, insufficient coolant, etc. In daily maintenance, it is recommended that the owner regularly clean the heat dissipation system, such as the dust and debris accumulated on the radiator for a long time, which will affect the heat dissipation performance of the radiator; Of course, it is best to do a comprehensive inspection of the entire cooling system, including thermostats, electronic fans, etc., to eliminate the hidden danger of failure. It is also necessary to regularly check the level of water in the water tank, especially if the car is going to run long distances, add enough coolant.

The specific reasons for the high water temperature of the Mercedes-Benz engine are as follows:

1) The cooling fan does not rotate. The cooling fan may be controlled by a thermostat switch; It may also be controlled by a water temperature sensor.

2) Insufficient cooling medium. Antifreeze.

High-end cars are required to be filled with antifreeze all year round; water or distilled water.

temporary substitution; The water tank cover is leaking.

3) The thermostat is damaged. If you want to remove the thermostat, you should put a small cycle at this time.

plugged, which ensures the coolant.

All heat dissipated by the water tank; When installing a new thermostat, you should pay attention to over-water holes, such as Santana.

There is no water hole, and a 6mm drill bit should be used to drill a hole at this time. One function is to be used as a marker; Another function is that during the heating process of the car, the temperature difference between the two sides of the thermostat is generated, so that the thermostat is accurately opened with the water temperature.

4) The water tank is clogged. The external blockage plug should be used to remove the dirt with water or gas; Internal blockages affect coolant circulation and create pressure, which can result in two outcomes, one is a leaking water tank or the other is a particularly high water temperature at high speeds.

5) Pump failure. Impeller slippage or jamming causes timing belt.

Break off; The impeller is deformed.

6) Cylinder corrosion. The combustion chamber is flushed with the water channel, which will drain water or exhaust white smoke from the drain pipe, resulting in frequent water shortage in the water tank; The waterway and the oil channel are flushed (the oil is white when there is water); The waterway and the waterway are rushed, resulting in poor heat dissipation of the cylinder block, especially at high speed; Blocked waterways.

7) The ignition timing is incorrect (corrected with a timing lamp) and the oil pressure is too high. If it helps you, I hope you thank you.

First,ThermostatsIt can't be opened, the water temperature gauge shows the high temperature zone, the engine temperature is high, but inside the water tankCoolantThe temperature is not high, and it does not feel hot when touching the radiator with your hands. Clause.

Second, if the car thermostat is not turned off, the water temperature will rise slowly, especially in winter, after more than ten minutes, the water temperature is still in the low temperature areaIdlingHigh.

A thermostat is a valve that controls the flow path of coolant, and is an automatic temperature control device, usually containing a temperature sensing component, which turns the flow of air, gas, or liquid on and off by thermal expansion or contraction. So what are the symptoms of a broken thermostat?

The symptoms of a broken thermostat are:

Clause. 1. The thermostat cannot be opened, the water temperature gauge shows the high temperature area, the engine temperature is high, but the coolant temperature in the water tank is not high, and the radiator does not feel hot when touched by hand.

Clause. Second, if the car thermostat is not turned off, the water temperature will rise slowly, especially in winter, after more than ten minutes, the water temperature is still in the low temperature area, and the idle speed is high.

thermostat according to the cooling water.

The temperature level automatically adjusts the amount of water entering the radiator and changes the circulation range of the water to adjust the heat dissipation capacity of the cooling system to ensure that the engine works within the appropriate temperature range. The thermostat must be kept in good technical condition, otherwise it will seriously affect the normal operation of the engine. If the main valve of the thermostat is opened too late, it will cause the engine to overheat.

If the main valve is opened too early, the engine warm-up time will be prolonged, and the engine temperature will be too low. When maintaining the cooling system, attention should be paid to cleaning the scale and dirt on the coarse thermostat. If it is found to be damaged, it should be replaced in time.

1. First of all, after finding that the water temperature is too high and stopping to the side, it should not be turned off immediately, because there are many reasons for the high water temperature, but there is probably only one fault each time, if all other functions are turned off, the water temperature will be too high, damage the finger bend engine, and the accurate approach should be idling.

Park, open the hood, turn on the heater, dissipate heat as soon as possible, and also be careful to park in a cool place. 2. Next, we need to check the coolant.

Whether it is sufficient, this situation is likely to be that the owner usually does not care about forgetting to add it in time, and it should be paid special attention to the fact that the owner must choose the same brand and model of the product when adding coolant, otherwise it may cause a chemical reaction due to different ingredients.

This leads to antifreeze.

Lapse. 3. Then, we are looking at whether the cooling fan is running normally, and the failure of the cooling fan will cause the heat generated in the car engine to be transferred to the antifreeze at high speeds, and the heat dissipation will not be obtained, resulting in the temperature of the antifreeze rising. If the fan is stuck or the insurance is burned, you can solve it as soon as possible after the power failure, if it is a line problem, it can only be handed over to the professionals of the 4S shop to overhaul.

Extended Information:Car Radiator Function:

The function of the cooling system is to dissipate excess and useless heat from the engine, so that the engine can operate at normal temperature at all speeds or driving conditions.

The water tank is the heat exchanger of a water-cooled engine, which is cooled by air convection to maintain the normal operating temperature of the engine. Once the tank inside the engine cools the water.

When the pressure exceeds the set value due to high temperature boiling and vaporization expansion, the pressure is released from the water tank cover (a), which reduces the cooling water and prevents the cooling system pipeline from bursting.

Usually the driving hole boy should pay attention to whether the engine cooling water temperature gauge pointer on the dashboard is normal. Other factors such as engine cooling fan failure causing the engine cooling water temperature to rise or cooling system line leakage may also cause a decrease in cooling water, and distilled water is added.

Please pay attention to whether the amount and cycle of cooling water reduction are normal.

Mercedes-Benz E-Class thermostat is a new technology three-disc electronic thermostat, which is different from the paraffin mechanical thermostat on ordinary cars, it will actively adjust the temperature of the coolant according to the engine load and the value of each Zen core sensor on the car. When you see a brief change in temperature, it's actually actively adjusting. For example, the water temperature drops rapidly from 90 degrees to about 80 degrees, but after a short time, it returns to 90 degrees.

But if the water temperature is kept around 80 degrees for a long time, it is necessary to consider whether the thermostat has been hung up.

Hello, Liang suspects Mercedes-Benz cars these days always have a high water temperature.

The following problems: 1. Insufficient coolant.

The water circulates for a long time when the engine is working.

It will cause the coolant of the engine cooling system to slowly lose, resulting in a lack of water in the water tank, if the owner does not check and add the coolant in time, it is easy to cause the engine water temperature to be too high.

2. The water tank is leaking.

The water pipe connected to the water tank is broken or not tightly connected, which will cause water leakage, which will block the water circulation, and in serious cases, cause the engine to boil.

3. The cooling fan is faulty.

If the cooling fan is damaged or the wiring is short-circuited, the fan works or the cooling fan rotates slowly, which will cause the heat of the engine to not be dissipated, and the water temperature of the engine will naturally rise.

4. Thermostat failure.

The thermostat is a device that controls the flow path of the coolant, and once it gets stuck or fails, the size of the engine cycle will inevitably be affected, and the heat of the engine will not be effectively dissipated.

5) Pump failure.

After the water pump fails, the water of the engine heat conduction can not be circulated and updated in time, so the water temperature will rise rapidly after the engine starts, and the water temperature warning light on the instrument panel in the car will also be buried in the key.

If the water temperature is too high, it is commonly known as boiling the pot. Boiling the pot will cause deformation or even damage to the cylinder head and block.

When the temperature is high, it becomes difficult to dissipate heat from the water tank, and the water temperature of the engine will rise to varying degrees, and the hose is more likely to soften the cooling water.

Leakage, therefore, it is common for the water to be too hot or even to boil the pot while driving. Normal engine water temperature should be constant at 85-95 degrees Celsius.

When the water temperature is too low, the fuel enters the cylinder and cannot be atomized well, the power and economy are not good, and the matching gap between the parts at low temperature.

If it is too large, the noise and vibration will be larger. When the water temperature is too high, the viscosity of the oil will become thinner, the lubrication strength will decrease, and at the same time, the high-speed moving parts such as the piston and valve are more likely to deform, resulting in engine weakness. In severe cases, the expansion and deformation of the piston will strain the cylinder, cylinder, and crankshaft.

The bearing dissolves and locks the crankshaft, etc., and the consequences are unimaginable. Therefore, for example, the water temperature gauge hand is close to the red zone.

Or if the water temperature warning light is on, you should immediately pull over and turn off the engine for inspection.

Hope it helps!

Mercedes-Benz cars, these days are always hydroplaning state temperature high and coarse, because the sale of the car caused by the failure of the town air cooling system, you should go to the car maintenance center in time to find the master to help overhaul it.

Check whether the antifreeze is available first, because the antifreeze is not only antifreeze, but also plays a role in stabilizing the water temperature and preventing the pipe from corroding.

Usually, the high water temperature is due to, 1 radiator blockage is the main reason. 2 Too little coolant and too dirty will cause the water temperature to be too high. 3.

Check that the thermostatic excavator is working properly. 4.Circulating the coolant too slowly can also cause the water temperature to be too high.

It is recommended to go to a repair shop to clean the water tank, replace the thermostat, and pay more attention to the cleaning of the coolant. Turn on the solution for high temperature of the air conditioner:

First of all, it is judged that the coolant, thermostat, thermal control switch, fan, safety valve, and water pump are all right. After the electric fan stops, turn on the empty switch, and the fan should run immediately. When the throttle is increased to 2000 rpm, the fan should run at a higher speed.

1: The fan cannot run at high speed. Check the fan's high-speed mechanism and control circuitry.

2.Because the condenser is in front of the tank, the heat is not easily dissipated when the radiator surface of the tank is covered with catkins and dust. The Jetta and Passat are prone to this type of failure. Clean the radiator surface of the tank.

3.Due to long-term use, the inside of the tank may be clogged with limescale, resulting in insufficient heat dissipation. It's better to buy a new tank.

Do not turn on the air conditioner to solve the problem of high water temperature:

Normal situation: first confirm whether the liquid level in the coolant replenishment tank is appropriate; Start the engine again and observe the water temperature gauge, the water temperature gradually increases. Holding the water pipe in the tank, I feel that it is gradually warming;Press and hold the water pipe, and the temperature is almost constant.

When the water temperature reaches 80?At this time, the sewer pipe began to heat up gradually, and the temperature of Zhiqingzhen was the same as that of the upper pipe, and the hand felt very hot. Keep the engine running.

The water temperature is 95?The electric fan starts to run, the water temperature drops slightly, and stops for about 1 minute. And so repeatedly, this system is normal.

1.The water temperature rises slowly, the upper and lower water pipes are the same temperature, and there is almost no heating in the car. Causes: The thermostat was not properly closed or even illegally removed during repairs. Replace and install the thermostat.

2.After the engine warms up, the electric fan also runs, but the water temperature may be higher than the upper pipe, and the lower pipe temperature is slightly lower than the upper pipe. Reason: The thermostat is not open enough, and the function of the refrigeration system is greatly reduced, which is very common and not easy to notice. Replace the thermostat.

The water thermometer rises to 95 degrees. The upper and lower water pipes are the same temperature, very hot. Reason:

There is a problem with the fan running circuit. There are three possibilities: a damaged fan, a damaged thermal switch on the tank, a damaged fuse, an early failure that accompanies or hides an electrical circuit or fan.

Replace the fan judgment hole;Replace the thermal switch;Replace the safety device and check the circuit.