BMW 730 rear shock absorber will automatically lower when parked

When the vehicle is turned off, the rear shock will slowly decrease, because the compressor is no longer working, and when the vehicle is started, the rear shock compressor will slowly rise.

BMW 7 Series. It is BMW's top-of-the-line luxury sedan series, with a 4-door sedan body and a front-rear-wheel drive drive. The BMW 7 Series is a BMW car.

The flagship model, and only in sedan form. Produced exclusively in Germany by BMW BMW, it replaced its predecessor, the BMW Newsix, in 1977.

China has become the second largest market for the BMW 7 Series in the world. Boasting a wealth of state-of-the-art and sophisticated technical equipment, the BMW 7 Series has evolved beyond each successive generation since its launch in 1977, setting new standards for design, power and innovation, combining pure driving pleasure with comfortable rides.

On May 24, 2019, the all-new BMW 7 Series was officially launched. The new 7 Series has launched a total of 6 upgraded models, matching four powertrains, with a price range of 10,000 yuan.

Hello! If the drop is fast, it is estimated that there is an air leak, and it is recommended to overhaul it. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello, it will go down automatically.

I hope it can help you [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

There are three possibilities:First, there is a shock absorber leakage, generally the shock absorber has been for a long time, its skin bag is broken, or the top rubber or sealing ring inside these seals are aging, resulting in gas leakage, if this is the case, the shock absorber will collapse if the car is parked overnight. Shock absorber leakage needs to be repaired as soon as possible, otherwise even the pump may break.

Second, if there is a problem with the pump, if there is a problem with the pump, you can start the car to try it, if the shock absorber does not get up, the probability of the pump being broken will be greatly increased.

Third, there is a problem with the distribution valve, you can replace the distribution valve with the front and rear pipes, and then start the car, if the rear of your car is up at this time, and the front part collapses, it means that the distribution valve is broken. If you can't get up in the front and can't get up in the rear, it means that there is a problem with the shock absorption.

Check whether there is air leakage in the air shock absorber, check whether the air shock absorber pipeline is damaged, and check whether the vehicle height sensor is installed in an abnormal position.

The BMW 7 Series is BMW's top-of-the-line luxury sedan series, with a 4-door sedan body and a front-rear-wheel drive drive. The BMW 7 Series is the flagship model of BMW cars, and it is only available in sedan form. Produced exclusively in Germany by BMW BMW, it replaced its predecessor, the BMW Newsix, in 1977.

Power highlights. In terms of power, the BMW 7 Series will be equipped with an upgraded Bijisheng turbocharged inline four-cylinder engine, a turbocharged inline six-cylinder engine and a twin-turbocharged V8 engine, which correspond to the 730Li, 740Li and 750Li models, with a maximum power of 258 horsepower, 340 horsepower and 530 horsepower respectively.

The M760LI model uses an engine with a maximum power of 585 hp and a peak torque of 850 Nm, and a 0-100 km h acceleration time of seconds. In terms of transmission, the new car is mated to an 8-speed automatic manual transmission.

The balance can be adjusted by adjusting the ECU, and the chassis lift can adjust the height of the body. BMWThere is no switch for the air suspension, you can only adjust the sports mode, there are 4 kinds of sports modes such as sport and normal on the left side of the gear lever, you can adjust the softness and hardness of the chassis suspension and the corresponding degree of throttle by adjusting the sports mode.

Shock absorber. absorber) is used to suppress the impact from the road surface when the spring absorbs the shock and rebounds. It is widely used in automobiles to accelerate the attenuation of frame and body vibrations to improve the driving smoothness of automobiles.

When passing over uneven roads, although the shock absorbing spring can filter the vibration of the road surface, the spring itself will also have reciprocating motion, and the shock absorber is used to suppress this spring jump.

In the suspension system, due to the vibration of the elastic element by the impact, in order to improve the smoothness of the car, the shock absorber is installed in parallel with the elastic element in the suspension, and the shock absorber is mostly a hydraulic shock absorber in the automobile suspension system, and its working principle is that when the frame (or body) and the axle vibrate, there is a relative movement.

, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity repeatedly flows from one cavity through different pores into the other cavity. At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form a damping force on the vibration, so that the vibration energy of the car is converted into oil heat energy, and then absorbed and dissipated into the atmosphere by the shock absorber. When the cross-section of the oil channel and other factors are constant, the damping force increases and decreases with the relative motion speed between the frame and the axle (or wheel), and is related to the oil viscosity.

Summary. Hello, according to the vehicle fault phenomenon shock absorption sinking, combined with the vehicle fault code, it is recommended to check whether the right front shock absorption solenoid valve plug line is abnormal, if there is no need to stop to confirm which shock absorption sinks, take it out and soak it in water to confirm whether there is air leakage.

Hello, according to the vehicle fault phenomenon shock absorption sinking, combined with the vehicle fault code, it is recommended to check whether the right front shock absorption solenoid valve insertion calendar Qingtou line is abnormal, if there is no limb posture grip need to stop to confirm which shock absorption sinks, take it out and soak in water to confirm whether it is leaking or making trouble.

Replaced with a new shock absorber what is the reason for the unevenness.

Replaced with a new shock absorber what is the reason for the unevenness.

Your situation is mainly due to the difference in the hardness of the shock absorber springs on the left and right sides. It is recommended that you re-check the land inspection or replace the shock absorber on the other side, such as the uneven ridge of the left and right body height of Tanye Qingguo, which will cause the vehicle to deviate.

Can replacing the shock absorbers on both sides at the same time solve the problem?

Can replacing the shock absorbers on both sides at the same time solve the problem?

It stands to reason that you can do it, you can have the same model, the same spring length, and the same hardness.

It is recommended to find a new one or replace the other side with the same model.

ok thanks.

ok thanks. Polite.

Summary. Hello, the matching method after the shock absorption of BMW 730 after replacement is: enter the vehicle suspension control unit, activate for height adjustment, and manually adjust the height for height matching, and mark the angle value.

After that, under normal driving conditions, the system sets the shock absorber to a soft setting. <>

<> matching method after the BMW 730 is replaced with shock absorbers.

Hello, BMW Zeyan Stuffy 730 after the replacement of the shock absorption of the Pisun bending method: enter the vehicle suspension control unit, activate the height adjustment, manual adjustment after the height of the jujube answer line matching, mark the angle value. After that, under normal driving conditions, the system sets the shock absorber to a soft setting.

<> Extended Information: Shock absorption is an important part of a car's suspension system. Its function is to inhibit the absorption of vibration and deformation by the impact of the slag recoil, and to absorb the impact of the road surface.

It directly affects the ride comfort and handling of the vehicle, which will affect our driving safety. <>

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Summary. Dear, I'm glad to answer for you, 1 year BMW 740 yesterday changed the back two shock absorbers, put it overnight and the back two shock absorbers dropped by 3cm is not normal. Normally it is a change in 1cm.

Do a few measures after the replacement, the first is to do the height matching after the replacement, after the matching to measure the height in the parking state, and then measure again in the morning of the second day, if it drops about a centimeter, there will be no problem.

The 11-year-old BMW 740 changed the two shock absorbers in the back yesterday, and the two shock absorbers in the back dropped by 3cm overnight, is it normal?

Dear, I'm glad to answer for you, 1 year BMW 740 yesterday changed the back two shock absorbers, put it overnight and the back two shock absorbers dropped by 3cm is not normal. Normally, it is a spike that changes at 1 cm. Do a few measures after the replacement guess the silver land, the first is to replace the fight shout must do height matching, after the match to measure the height in the parking state, and then measure again in the morning of the second day, if it drops about a centimeter or so, that will not have any problems.

If you think about the situation of exceeding this number or even higher. If there is a leak, there is a leak, and the possibility of air leakage is xing, so the management of the shock absorber has gone back to the front shed and needs to replace one. Shock-absorbing tubing fittings need to be replaced.

At this stage, BMW 535GT F07, X5 E70, X6 E71 and other cars will also have the same fault phenomenon. In order to improve the comfort of the ride, the high-end models are equipped with air suspension. The air suspension has a service life, and according to the maintenance experience, it can generally be used for more than 5 years, which is also related to the use of the vehicle.

It's a BMW in 2011, why did it change the two rear air shock absorbers, and it dropped by 3cm overnight, is it normal?

Abnormal <>