Probably every vehicle owner sooner or later faces the problem of increased vehicle vibration. A symptom of this type should definitely cause concern to the driver, because an incomprehensible shaking may indicate critical malfunctions of the car, which must be eliminated without fail, otherwise you may face dire consequences, including an accident.

However, in most cases, an inexperienced car enthusiast gives up already at the first stage of repair, when it is necessary to identify the problematic unit. I advise you not to get upset, with my help you will find out all the possible causes of car vibration when driving, braking or accelerating. To do this, you just need to read the publication to the end, and then apply the acquired knowledge in practice. The main thing is not to rush, everything has its time.

What kind of vibration is dangerous?

Dear friends, I’m sure among you there will be owners of a rare VAZ 2107. Who else but you knows that there is operating vibration, so to speak, so in this case it is much more difficult to determine its permissible level. Of course, it is unlikely that you will be able to find special equipment for these purposes at home, so you will have to rely on your own feelings, and intuition, where would you be without it.

To quickly diagnose vibration at idle, you need to carry out a few simple manipulations with the “iron horse”.

1. Drive the car onto a flat surface.
2. The gear shift lever must be set in the neutral position.
3. With the clutch depressed, slowly press the gas pedal.

So, if all the trinkets that were on the dashboard during the procedure scattered throughout the cabin, and when looking in the rearview mirror it is impossible to catch the focus of the image, then you will definitely have to solve the repair problem. The steering wheel will also help determine the presence of a malfunction; even the slightest vibration felt when touching it can mean a serious malfunction, and therefore additional costs to fix it.

Main reasons

Car imbalance, or simply vibration, is a consequence of the centrifugal forces of the vehicle's numerous rotating mechanisms. So, your humble servant racked his brains for a long time to solve this problem on the Niva; it turned out that the culprit was a deformed cardan, which spread vibration throughout the entire body of the car. The same story can happen with other units:

• Between the crankshaft and the flywheel;
• Radiator and cooling fan;
• Brake discs and drums, etc.

In fact, there can be a lot of reasons for the design of a car, so they are all divided into three types:

1. Operational - arise due to excessive wear of parts or their deformation. The most obvious representative of this group are the engine mounts; they should dampen vibration from the main components of the automotive system, so first of all pay attention to these elements.
2. Constructive - in this case, vibration spreads due to the characteristics of a particular mechanism. Think about it, the usual valve (nipple) on the wheel, through which air actually enters the tire, has a detrimental effect on the balancing of the wheels. However, to solve this problem, car enthusiasts perform wheel pair balancing, which is discussed below.
3. Technological – incompatibility of sizes and parameters, interacting parts. It is this reason that leads to expensive repairs, so when restoring the engine you need to carefully select parts, especially pistons and connecting rods.

Vibration when driving

Often, when vibration appears while driving, you can get away with a slight fright. The fact is that poor quality road surfaces lead to the appearance of hernias and bumps on the tires. Moreover, gifts of fate in the form of potholes and pits lead to deformation of the disk itself; even vaunted alloy wheels are not always able to withstand such loads. Of course, if a tire is damaged, it will have to be replaced, but the imbalance that arises from a bent disk can be corrected by balancing the wheels.

This procedure can be carried out at almost any tire shop, and at a very reasonable price. Of course, experienced “drivers” are able to cope with such a process on their own, but the effectiveness of the result will most likely remain in question. Therefore, you shouldn’t be self-willed, but it’s better to turn to specialists because they have equipment in their arsenal that will help you equalize the weight of wheelsets in a matter of minutes.

In general, the balancing process is divided into two types:

1. Static is a simple method without the use of expensive equipment, so it can be done in an ordinary garage. The procedure eliminates the rotation of the wheel, and the accuracy of the adjustment and its actual effectiveness suffer as a result.
2. Dynamic - consists of constant rotation of the problematic part and its adjustment. This method in most cases helps to get rid of wheel imbalance. In addition, it is used even for significantly rigid units: cardan, crankshaft, etc.

If it was not possible to get rid of vibration using balancing, then you need to look for the cause in the car’s chassis and gearbox. Look, if the imbalance increases with speed, most likely the culprit may be the components located behind the transmission driven shaft:

• Hubs;
• Ball;
• Steering tips;
• Cardans;
• Elements of the transfer gearbox, if the “patient” is a VAZ 2121 or simply a “Niva”;
• And of course, wheels.

We will also touch on the owners of much more modern cars called Lada Kalina. Dear friends, the “disease” of your iron horse is the wear of the inner and outer hinge. I advise you to monitor their technical condition, otherwise the power unit mounting pads will quickly become unusable, which means vibration will appear.

Of course, all these are just the main reasons that lead to vibration. For more specific diagnostics, you need to roll up your sleeves and begin a large-scale inspection of the vehicle. You need to check everything both with the engine turned off and, for greater confidence, with the engine running:

• Tightness of tightened bolts and nuts;
• Exhaust system;
• Transmission;
• Suspension;
• Engine protection and other elements that may come into contact with the main units or body.

However, you need to be extremely careful because using a jack or with a very hot engine, you can inadvertently damage your own body.

Conclusion

As for vibration during braking, there can be several reasons: hubs, drums, discs and other elements of the braking system. But my advice to you is that before you take radical action, make sure that the cause is of a similar magnitude, because an imbalance can arise even due to low-quality tires.

99 100 ..

Mazda CX-5. Guide - part 99

i-ACTIVSENSE system

Car driving

NOTE

When the buzzer/rumble sound is selected as lane change warning

If there is a lot of noise inside the car, the driver may not hear the signal.

If steering wheel vibration is selected as a lane change warning, depending
Depending on the condition of the road surface, the driver may not feel it.

When the steering wheel correction function is turned on, you can turn on/off
providing lane change warnings. (If the corrective action function on the steering wheel is
wheel is turned off, it is not possible to disable lane change warnings).

Regardless of whether the system's steering correction function is turned on or off
wheel, the following LAS and LDWS system settings remain available. Before starting to drive
car, you need to check the system settings and, if necessary, change them accordingly
changes.
For more information, see pages 9-12 (“Customizing Settings”).

Steering wheel vibration: strong/weak

Warning sound volume

Type of warning signal (steering wheel vibration/buzzer/beeping horn)

To warn drivers that the car is drifting out of the lane, the following are used:

called road combs - transverse grooves located at a certain pitch. When on-
When a car wheel drives onto the comb strip, the car begins to vibrate, accompanied by noise,
which sounds like a rumble. This is a warning to the driver that the vehicle is leaving its lane.
marriage. The warning tone (rumble) of the LWDS system reproduces the characteristic noise that occurs
when a car wheel hits a road ridge.

Comb

i-ACTIVSENSE system

Car driving

Adjustable Speed ​​Limiter (ASL)*

The ASL function helps prevent the driver from exceeding the speed limit set by the driver.
When the limiter is activated, the vehicle speed cannot exceed the set value, even if the driver
additionally presses the accelerator pedal.
The ASL function is capable of limiting speed between 30 km/h and 200 km/h. When driving on a slope
The vehicle speed may exceed the set value. The system will inform the driver about this by flashing
indication of the speed limiter on the display and activation of the warning sound alarm.

DANGER

When changing drivers, the system must be switched off.
If, in the event of a driver change, the other driver does not know that the ASL function is enabled, then when he presses
accelerator pedal, the vehicle may not begin to accelerate, which may result in traffic accidents
incident.

* For some vehicle options.

i-ACTIVSENSE system

Car driving

This system includes an ASL screen and a speed limiter switch on the steering wheel.

Active Driver Display

(with projection onto the windshield)

(Flip type display)

Instrument cluster, type B
(Applicable to vehicles not equipped with

Instrument cluster, type A
(Applicable to vehicles equipped with
multifunction information display)

Cruise control system

Mazda Radar Cruise Control (MRCC)

or cruise control system

Mazda Radar with Stop & Go function

(MRCC with Stop & Go function)

MODE button

SET+ button

MODE button

RES/+ button

RES button

SET button

SET button

CANCEL button

System switch

OFF/CAN button

i-ACTIVSENSE system

Car driving

Variable Speed ​​Limiter (ASL) Screen

The current ASL function setting is displayed in the active driver display (vehicles equipped with
active driver display) or in the instrument cluster display.

Standby indication

Appears on the display when you press the speed limiter switch and turn on the system. Indication
turns off when the system is turned off.

Active driver

display

Vehicles equipped
multifunctional
information display

Vehicles not equipped
multifunctional in-
formation display

Setting indication

Vehicles equipped with a cruise control system

Appears on the display when you press the SET– switch and set the speed limit value.

Vehicles equipped with Mazda Radar Cruise Control (MRCC) or Cruise Control
Mazda Radar with Stop & Go function (MRCC with Stop & Go function)

Appears on the display when you press the SET+ or SET – button and set the speed limit value.

Active driver

display

Vehicles equipped
multifunctional
informational
display

Cars not equipped with
ny multifunctional
informational
display

System cancellation indication

Appears on the display when one of the following actions is performed and the operation is temporarily cancelled.
systems.

Pressing the OFF/CAN button

Pressing the accelerator pedal hard

Active driver

display

Vehicles equipped
multifunctional
informational
display

Cars not equipped with
ny multifunctional
informational
display

At one time, the Mazda CX 5 became a pioneer in the use of innovative technologies and systems developed specifically for it by Japanese engineers. Therefore, it is not surprising that during the operation of the first production cars, problems arose, the so-called “childhood diseases”. However, there are not many of them, and there is almost no reason for concern. The manufacturer eliminated any malfunction during the warranty period, and with the release of the restyled Mazda CX 5 model, all the comments were eliminated.

In the Mazda CX 5, the company used the SCYACTIV technical concept for the first time. This concept uses innovative solutions that improve the efficiency of the crossover, reduce harmful emissions into the environment and ensure a high level of vehicle safety.

New ideas usually have some rough edges. At the same time, there was only one case when the Mazda CX 5 was recalled. The action to check the tightness of the glazing was carried out for 184 cars sold in Russia from December 2013 to April 2015. When installing the glass, inappropriate primer was used.

Design

Let us understand the “heavenly” concept constructively.

Firstly, lightweight and durable body. For the first time in the automotive industry, high-strength hot-formed steel was used for the body of the Mazda CX 5. The body structure includes a large number of rectilinear elements, a structure similar to the frame of a crane, very strong and extended. The connections of elements are optimized by computer programs. The result is the lightest body among its classmates with a torsional rigidity of 27,000 Nm.

Secondly, high-tech power units and transmissions. At first, the CX 5 was sold with three SKYACTIV power plants: two gasoline engines of 2.0 and 2.5 liters and a diesel engine of 2.2 liters. But later the Japanese abandoned the diesel version. Gasoline unit with direct fuel injection with a compression ratio of 14:1 - the highest in the history of gasoline engine construction. Newly designed cylinder block with reduced friction and perfect distribution of the fuel and gasoline mixture. An ultra-high compression ratio increased engine efficiency and made it as economical as possible.

The choice of transmissions is limited to two options: a 6-speed manual transmission and a classic 6-speed automatic. The CX 5 drive is front-wheel drive as standard, or all-wheel drive with a clutch-connected rear axle. The manual gearbox is lightweight and compact. The shift mechanism is a redesigned sports MX 5. A feature of the new automatic transmission is the torque converter locking in each gear. This solution saves fuel and ensures constant torque transmission.

Third, optimized chassis. To achieve excellent handling, the steering and suspension units received new mounting points, and the shape and weight of the levers were optimized.

The innovative designs of the Mazda CX 5 also resulted in some of the car’s problems:

• Malfunction of the exhaust gas catalytic converter. Eco-friendly EURO-6 engines require the use of high-quality gasoline with an octane rating of at least 95.
• Malfunction of ignition coils. The manufacturer is still looking for reasons, and the most common one is again fuel.
• The generator belt breaks and the tension roller fails, a frequent malfunction with a mileage of about 30 thousand km. The main reason is considered to be the i-stop system, which turns off the engine at every stop.
• Premature failure of the front hub bearing. The reason is the design of the hub unit, which is not designed for our roads.

5 kopecks about Mazda CX 5

Disadvantages of the Mazda CX 5, noted by numerous SUV owners during daily use:

• Insufficient sound insulation, especially in the area of ​​the wheel arches.
• Fragile windshield, highly prone to scratches and chips.
• Suspension stiffness is not for everyone.
• Lack of heating of the steering wheel and windshield wiper blades.
• The low wear resistance of the fabric covering, especially on the card doors, gets dirty easily.
• Errors in the operation of the blind spot monitoring system.
• During the winter season, the trunk opening handle often jams.
• High sensitivity of engines to the quality of AI-95 Euro 6 fuel.

I-stop system a convenience or a problem?

As part of the fight for efficiency, the designers of the Mazda CX 5 equipped the car with an i-stop system. Artificial intelligence allows you to save more than 8% of fuel by turning the engine off and on when driving in a traffic jam. This is done automatically and does not cause any inconvenience to the driver.

However, the Mazda CX 5 of the first releases had certain problems, thanks to the i-stop system, which quickly discharged the battery in urban conditions. The battery was not ready for increased loads. At the same time, the i-stop system stopped starting the engine when the battery voltage dropped.

Car enthusiasts fixed the problem in their own way, turning off i-stop with a button, but when restarted, the system automatically turned on again. Some did not fully press the brake pedal, trying to deceive the electronic assistant. At first, dealers replaced the battery with a larger capacity battery under warranty, and subsequently modified the control program. The minimum charge level for the i-stop system to operate has been reduced to 65%.

The childhood illnesses of the Mazda CX 5 do not end there. The main problem of the first generation of the model was poor noise insulation. Drivers noted increased noise in the cabin from the road, wheels, and transmission. At high speeds, it became necessary to raise our voices to hear each other.

Some owners experienced rattling in the area of ​​the windshield and side windows. For the windshield, an error was made when tightening the frame mounting bolts. When calling for service, the bolts were tightened. And the manufacturer introduced more stringent production controls when performing this operation.

The side windows rattled in the open position due to a weak sealing element. In the second year of production of the crossover, the shape of the seal was redesigned and the fault disappeared.

In the first copies of the Mazda CX 5, strong vibration of the hood was also observed at high speed. Craftsmen glued the hood with additional sheets of sound insulation, sometimes this helped. Official dealers, having looked into it, concluded that the outer hood panel had an insufficient number of welding points, which was compensated for with a special sealant. If there was not enough sealant, some areas would come off and cause vibrations. Later they began to use additional fastening of elements.
But still, the crossover from Mazda is the best!

But still, the crossover from Mazda is the best!

Despite the minor drawbacks that were present in the new model after the start of production, the Mazda CX 5 is currently the best in its class in terms of design, technology, electronic assistants, comfort and handling. But the one who does nothing makes no mistakes! Moreover, all faults were promptly corrected by the manufacturer.