What happens when the car suddenly loses its brakes? Lavida has checked that there are no brakes

There are many aspects of automobile brake failure, it may be that the lubrication of the brake system is not enough, and it is necessary to use some grease for brakes, brake motor grease, etc.

The problem of car brake failure:

"Brake failure" is related to the operation of the owner.

In fact, in general, the problem of brakes is not working, it should be caused by the improper operation of the owner himself when driving, or the improper maintenance of the car when doing maintenance leads to damage to the braking system of the car, resulting in the car when the brakes are not working, the owners, if your car is a new car on the brake problem, it is recommended that it is best to go to the 4S shop to check clearly and be safer.

The brakes are not firm".

Now there are more and more incidents of brake failure in automobiles, so professionals carry out investigations on this, the content of the investigation is about the problem of car brakes not firmly, and the results of the investigation show that the accident of brake failure in summer mainly occurs in the car body of small displacement. Because the power of the engine of the small displacement model is inherently insufficient. In addition, the weather is hot and the air conditioner is turned on in the car, and when the owner repeatedly steps on the brakes (such as reversing into the garage), the engine cannot take care of the brake booster pump, resulting in the failure of the brake booster pump.

Turning on the air conditioner can make the car's brakes heavier.

In life, sometimes the owners will feel that the car brakes are very heavy and difficult to step on when driving, but they don't know what the reason is, especially in the summer, this problem will often appear, for this problem experts give an explanation, experts say that the main reason for such a problem is in the car air conditioning, because in the summer, the owners are basically in the whole process of opening the air conditioning, especially the small displacement of the car, when the car air conditioning is turned on, the car engine will naturally have a load, So the brakes of the car are very heavy.

1. The brake pads are gone.

2. The brake fluid is used for too long.

3. The brake cylinder is broken.

First, the handbrake line is tight and does not return.

The direct consequence is that the brake disc is overheated, or the brake noise is abnormal, and the brake pad is overheated and the thermal attenuation occurs, and the brake thermal attenuation is one of the main culprits of brake failure.

In fact, the handbrake line is a steel wire wrapped by plastic on the outside, which is easy to elongate after a long time, but elongation will only make the handbrake not easy to tighten and slip, and it will not "drag the brake". Most of the culprits causing the "drag brake" are the return spring of the handbrake mechanism at the rear brake cylinder can not return normally, which is also a place that is easy to ignore.

Second, the brake master cylinder inlet air.

Exhaust is very important when changing the brake fluid, if the air in the brake fluid is not excluded, it will have a serious impact on the braking effect, and even cause brake failure. If the brake master cylinder enters the air and the brake becomes softer, there may be no brake response when the brake is pressed to the end, and it is necessary to count the brakes to have a certain effect. When the brake master cylinder enters the air, it needs to be discharged immediately and the cause should be found, if the brake master cylinder fails, there will be endless air discharge.

3. The hidden danger of long-term braking caused by too high brake oil and water content.

The water content in the brake fluid can be detected by the brake fluid inspection pen, and once the water content in the brake fluid exceeds the standard, it is also a manifestation of the deterioration of the brake fluid. Brake fluid also needs to be serviced and replaced regularly, especially if there is too much water.

Once the water content exceeds the standard, high temperature occurs when frequent braking is required, and the water in the brake oil becomes water vapor and produces air resistance, resulting in soft brakes, and even brake failure, which makes the car appear a great safety hazard. Therefore, once the water content in the brake fluid exceeds the standard, it must be replaced.

Fourth, the brake failure caused by the failure of the brake master cylinder.

The failure of the brake master cylinder is a serious fault problem, and the fault is mostly manifested in the internal leakage of the pressure of the master cylinder, the brake pedal is empty, and the brake pedal is lower than the other, and even the brake force is not there when the brake pedal is empty.

In fact, it is not uncommon for the brake master cylinder to have problems, if the brake master cylinder fails, the brake master cylinder should be overhauled and replaced immediately, and the car must not be "injured" on the road.

Suddenly there is no one, is there no pressure to press the brakes, it is very light?

The oil pump or oil pump circuit supplying the brake fluid is faulty.

Reasons: 1. Daily operation errors.

Most of the reasons are due to mistakes in the operation and maintenance of the car. As a car owner, you must regularly maintain the car's braking system. Once there is a brake problem, it should not be underestimated, and you must go to the car 4S shop to check it clearly.

2. The car is overloaded.

In summer, many car owners will find that the brakes are very difficult to press, the reason for this is because most cars will turn on the air conditioning in summer, if the displacement of the car is not large, it is easy to increase the load of the engine, and eventually affect the play of the brakes.

3. Weather factors.

The brakes are not firm, which is the situation that many car owners are using the brakes. This is especially true for cars with small displacements. Because the power of the engine is not sufficient, and the air conditioning is turned on, the owner of the power pump can not play its due role when the braking process is repeated.

There could be several reasons for the sudden lack of brakes:

Brake hydraulics failure: The fluid pressure in the brake hydraulics may decrease or disappear, causing the brakes to malfunction. This can be caused by a leak in brake fluid, a brake failure, or a problem with the brake cylinder.

Brake pad wear: When brake pad wear is severe, the braking force will weaken or fail completely, which is usually caused by brake pad wear or brake pad detachment.

Brake disc wear: Brake disc wear can cause brake failure, which is usually caused by excessive wear or deformation of the brake disc.

Cracked or loose brake lines: Cracked or loose brake lines can cause brakes to fail, which is usually caused by aging, corrosion, fatigue, or man-made damage to the lines.

When a manual transmission car encounters this problem, then it is relatively easy to solve. Because we know that the biggest difference between a manual transmission car and an automatic transmission car is that the manual transmission can change gears by itself, while the manual transmission shifts to a low gear, and can use the traction of the engine to slow down. Moreover, these manual transmission cars are mechanical handbrakes, at this time, we can also use the handbrake to slow down and use it as a brake.

If for those more intelligent automatic transmission cars, this method is difficult to play an effective effect, because there is no way to change the gear to end the automatic transmission, but if your car has a mechanical handbrake, you can still use the manipulator to assist you in braking, but at this time we do not have the practice of shifting directly release your accelerator, start to raise the handbrake, remember to do it several times, so as to prevent the wheels from braking and locking.

But if you only have an electronic parking brake on your car, and it turns off automatically when the car is running at high speed, you have no choice but to rub your car against the wall so that you can use the friction to slow down.

It could be that the brakes are broken or the brake fluid is running out or leaking.

A car that's less than a year old suddenly doesn't brake while driving? What's going on?

The first thing you should know is that the main reasons for the death of the car accelerator pedal are as follows, first, the design of the car mat is unreasonable, or the configuration position is wrong, the brake pedal is hung up after the hook, and the pedal can not bounce back normally, second, the debris in the car, such as drink bottles and other objects will roll to the brake pedal nearby, causing the accelerator pedal to stop, third, the accelerator pedal itself has a problem, the auxiliary force to restore the original position is insufficient, and the pedal will produce adhesive force, which cannot be normal when it is serious. If the throttle dies suddenly for this reason, the engine will continue to output power, and it will be difficult to brake just by pressing the brake pedal, so in this case, be sure to pay attention to the three self-help actions.

First of all, quickly switch the gear to the gear, for the automatic transmission of the car, directly add the grade to the n level, the manual car is reduced by one level, and finally install the gear, it should be noted that the rotation speed of the engine will suddenly become higher, the driving computer in order to prevent engine damage, will automatically issue a shutdown instruction, do not be surprised by the ** sound of the engine, this is a normal phenomenon, after braking, step on the brake pedal in turn, apply the deceleration brake.

Second, firmly support the steering wheel, control the direction, in the event of an emergency, please do not panic, firmly support the steering wheel of the car, control the direction of the car, avoid the car, pedestrians and other obstacles in front, try to drive in a place with few people, please do not hit the direction and the car hard.

Third, stop the engine in a suitable safe place, if the brakes are opened and you slide on a straight road, you can stop the engine and brake immediately, but in a place with a slope, the car reaches a safe place, you need to brake and brake, and the engine stops after the brakes are pulled.

One is that the neutral coasting time is too long. Neutral coasting is generally a long downhill, the speed is only about 700 when sliding, after intermittent use of brakes, the brake pump pressure is insufficient, and there will be insufficient brakes when you want to stop.

The second is to use the brake continuously for a long time, the brake temperature is too high, the temperature of the brake pad is too high, the friction coefficient drops rapidly, and the brake will be insufficient, and sometimes there will be no brake;

The third is to turn off the ignition and slide, the brake pump does not work, and there is no brake.

In case of long downhill, it is necessary to make full use of the engine for braking, switch to the appropriate gear, the engine and brake work at the same time, the truck should also pay attention not to overload, overload too much, exceed the limit of the vehicle, and there is no way to brake in case of emergency; There is also frequent maintenance of brakes and timely replacement of brake pads with serious wear and tear. And then there's speeding.

It is recommended that you check the accessories that control the brake pads, not the brake pads.

Hope it helps!

In this case, if the brake is suddenly gone, then it is necessary to check whether there is an oil leak in the brake cylinder or the brake master cylinder.

Suddenly there is no one, is there no pressure to press the brakes, it is very light?

You open the front hood and see if the brake fluid is gone.

If so, there is an oil leak in the area, and this needs to be repaired.

It depends on what kind of brake it is, and the possibility of oil brake vacuum is a little greater.

The booster pump is new, and the master pump is new and does not leak oil, but there is no brake.

The braking effect is significantly reduced, often the brakes are stepped on and can not be stopped immediately, and continue to walk far forward to stop, this may be the car's braking system failure, this is the most terrible fault in driving, often easy to form traffic accidents, to do emergency treatment, generally to see whether the brake pads are aging, whether the brake fluid is deteriorated, whether the tires are seriously worn.

Some new drivers thought that the engine was caused by braking too hard and the engine and transmission were not separated in time, so they did not pay attention to it. But later, when the car started in place, the engine could not idle normally and was prone to stalling.

One is that the neutral coasting time is too long. Neutral coasting is generally a long downhill, the speed is only about 700 when sliding, after intermittent use of brakes, the brake pump pressure is insufficient, and there will be insufficient brakes when you want to stop.

The second is to use the brake continuously for a long time, the brake temperature is too high, the temperature of the brake pad is too high, the friction coefficient drops rapidly, and the brake will be insufficient, and sometimes there will be no brake;

The third is to turn off the ignition and slide, the brake pump does not work, and there is no brake.

In case of long downhill, it is necessary to make full use of the engine for braking, switch to the appropriate gear, the engine and brake work at the same time, the truck should also pay attention not to overload, overload too much, exceed the limit of the vehicle, and there is no way to brake in case of emergency; There is also frequent maintenance of brakes and timely replacement of brake pads with serious wear and tear. And then there's speeding.

It is recommended that you check the accessories that control the brake pads, not the brake pads.

There are 3 reasons why there is no brake at all or the brake effect is not good: First, the neutral coasting time is too long. Neutral coasting is generally a long downhill, the speed is only about 700 when sliding, after intermittent use of brakes, the brake pump pressure is insufficient, and there will be insufficient brakes when you want to stop. The second is to use the brake continuously for a long time, the brake temperature is too high, the temperature of the brake pad is too high, the friction coefficient drops rapidly, and the brake will be insufficient, and sometimes there will be no brake; The third is to turn off the ignition and slide, the brake pump does not work, and there is no brake.

In case of long downhill, it is necessary to make full use of the engine for braking, switch to the appropriate gear, the engine and brake work at the same time, the truck should also pay attention not to overload, overload too much, exceed the limit of the vehicle, and there is no way to brake in case of emergency; There is also frequent maintenance of brakes and timely replacement of brake pads with serious wear and tear. And then there's speeding.