Driving a car Nissan Qashqai directly depends on the serviceability of the steering mechanism, the central element of which is the steering column. This part not only transfers force from the driver's hands to the wheels, but also serves as a mounting location for critical safety and comfort systems. Any deviations in the operation of this unit, be it extraneous sounds or changes in steering effort, require immediate attention.
Many crossover owners are faced with the fact that the steering column Nissan Qashqai begins to “play” or make a characteristic knock when driving over uneven surfaces. Ignoring such symptoms can lead to complete loss of control in a critical situation. In this article, we will analyze in detail the design of the unit, typical faults and methods for eliminating them, so that you can operate your car safely.
Design and principle of operation of the steering unit
At the heart of the steering system Nissan Qashqai lies the steering column, connecting the steering wheel to the gearbox. Modern modifications are equipped with an electromechanical power steering (EPS), which is integrated directly into the column or mounted on the steering shaft. This solution allows to significantly reduce fuel consumption and provides variable force depending on the driving speed.
The column consists of several shafts connected to each other by cardan joints. At the top there is a control unit (key combination), and at the bottom there is a mechanism for interacting with the power steering. The design provides the ability to adjust the height and reach, which allows the driver to choose the optimal driving position. An important element is the damper, which dampens vibrations from the road surface.
Particular attention should be paid to the airbag control unit and steering angle sensors. These components are housed inside the speaker housing and connected via a coiled cable. During any repair or disassembly, strict precautions must be taken to avoid damaging the electronics.
Typical symptoms of steering column malfunctions
The first signs of problems with steering column often do not appear immediately, but increase gradually. The most obvious symptom is the appearance of play, when the steering wheel can be turned several degrees without the front wheels reacting. This may indicate wear on the universal joints or loosening of the shaft itself.
Another warning sign is the appearance of extraneous sounds. A characteristic knocking sound when driving over speed bumps or in potholes often indicates destruction of the bushings or shaft bearings. Drivers may also complain about the steering wheel “biting” when the force to turn sharply increases at a certain point, which indicates problems in the operation of the electric motor of the amplifier or the mechanical part of the gearbox.
The system malfunction warning light may come on on the instrument panel. EPS (Electric Power Steering). This is a signal that the electronic control unit has detected an error in the operation of the rotation angle sensors or the amplifier motor itself. In this mode, the steering wheel becomes significantly heavier, which requires emergency diagnostics.
Diagnostics and detection of hidden defects
To accurately determine the cause of the malfunction, it is necessary to conduct a comprehensive check. A visual inspection of the engine compartment and lower part of the steering shaft can reveal obvious damage, such as cracks in the casing or traces of oil (if hydraulics are used, which is rare for new ones). Qashqai). However, most problems are hidden within.
Checking the play begins by fixing the front wheels in a straight position. Next, you should swing the steering wheel left and right, observing the reaction of the cardan joints. If the steering wheel turns but the lower shaft stays still, the problem is in the upper cardan or mount. If the movement is transmitted, but with a delay, there is wear in the gearbox itself or the steering rack.
Electronic diagnostics is a mandatory step. Using a specialized scanner, it is necessary to read error codes from the EUR control unit. A common error is the steering angle sensor calibration failure, which requires a learning procedure after replacing the battery or power failure.
- Steering play
- Knock when turning
- EPS error
- Heavy steering
- Nothing worries
Procedure for replacing the steering shaft and cardans
If diagnostics reveal mechanical wear, the unit will need to be replaced. The process of replacing the steering shaft Nissan Qashqai quite labor-intensive and requires a special tool to remove the steering wheel.
First you need to remove the steering wheel. To do this, you need to unscrew the airbag mounting bolts, disconnect the connectors and carefully remove the steering wheel. After this, the lower part of the column casing is dismantled and the bolt securing the propeller shaft to the rack is unscrewed. Be careful not to turn the steering shaft, otherwise you may lose wheel alignment or damage the gears.
When installing a new shaft, it is critical to align the splines on the steering wheel and the shaft so that the steering wheel sits level. A misalignment of a few degrees will cause the wheels to be crooked and the steering wheel to be in the center. Use steering shaft clamps or special marks for correct installation.
☑️ Preparing to replace the shaft
What to do if there is no special key for the steering wheel?
Instead of a special wrench, you can use a thin screwdriver and pliers to compress the airbag clamps, but this requires great care.
Repair of electromechanical power steering (EPS)
Electromechanical power steering Nissan Qashqai often fails due to motor overheating or brush wear. In some cases, cleaning the contacts and replacing the lubricant in the gearbox helps, but more often a complete replacement of the unit or its overhaul by professionals is required.
A common problem is the failure of the torque sensor. This sensor measures the force with which the driver turns the steering wheel and transmits the data to the control unit. If the sensor is faulty, the system may not supply force or, conversely, create excessive resistance.
Repairing the power steering requires disassembling the housing and replacing bearings or gears. After repair, a procedure of “training” (calibration) of the zero point of the rotation angle sensor must be carried out. Without this procedure, the steering will not work correctly and the error lamp will remain on.
Before removing the EUR, mark with a marker the position of the shaft relative to the housing in order to maintain the original installation angle during assembly.
Adjusting wheel alignment angles after repair
Any intervention in the steering system, including replacing the steering shaft or cardan shafts, disrupts the suspension geometry. Therefore, after completion of the work, a wheel alignment procedure is required. Neglecting this step will lead to rapid tire wear and unstable vehicle behavior on the track.
During the setup process, the technician must make sure that the steering wheel is level when driving in a straight line. If the steering wheel remains skewed after replacing the shaft, this may indicate improper assembly or the need to adjust the steering rods. Modern stands allow you to accurately set parameters even after serious interventions.
| Parameter | Value (norm) | Permissible deviation |
|---|---|---|
| Front wheel alignment | 0° ± 10' | ± 20' |
| Front wheel camber | -1° 30' ± 30' | ± 45' |
| Caster (pitch angle) | 6° 30' ± 30' | ± 45' |
| Wheel steering angle (inner/outer) | 33° / 36° | ± 1° |
Operating rules and prevention
To extend the life of the steering column and amplifier, you must follow simple operating rules. Avoid sharp jerks of the steering wheel in extreme positions when the wheels rest against the stops. In this position, the amplifier motor operates under maximum load, which leads to overheating.
Regularly check the condition of the steering rod boots and universal joints. The penetration of moisture and dirt into the mechanism is the main cause of accelerated wear. If you notice cracks in the rubber seals, replace them immediately to prevent corrosion of the metal parts.
Pay special attention to the quality of fuel and oil in the engine, as this affects the operation of the generator. Voltage surges in the on-board network can damage the electronic power steering control unit. Stable voltage is the key to long life of electronics Nissan Qashqai.
Regular diagnostics and timely replacement of worn parts of universal joints allow you to avoid expensive repairs of the steering mechanism.
⚠️ Warning: Never attempt to remove the steering wheel without first disconnecting the battery. Accidental activation of the airbag may result in serious injury and explosion of the airbag module.
⚠️ Attention: If the steering wheel remains skewed after replacing the shaft, do not try to straighten it by simply turning the steering rack. This will disrupt the steering angle sensor settings and cause the EPS error light to stay on.
FAQ: Frequently asked questions
Is it possible to drive with the power steering error light on?
Technically the car will be able to move, but the steering wheel will become very heavy, especially at low speeds and when parking. This poses a security risk, so it is recommended to immediately contact the service for diagnostics.
How much does it cost to replace a steering column on a Nissan Qashqai?
The cost depends on the year of manufacture and configuration. The original can cost from 40,000 to 80,000 rubles, plus replacement and calibration work (about 5,000 - 10,000 rubles). An analogue may be cheaper, but requires careful checking of compatibility.
Why does the steering wheel knock only when driving over bumps?
Most often, this is a sign of wear on the upper universal joint or its attachment to the steering shaft. The cause may also be wear of the bushings holding the shaft in the column housing. Requires dismantling and visual inspection.
How to reset EPS error after repair?
To reset the error and calibrate the rotation angle sensor, diagnostic equipment is required (for example, CONSULT-III or equivalent). The procedure includes training the zero point and testing the operation of the amplifier at different speeds.
Does replacing the steering shaft affect the vehicle warranty?
If the car is under warranty, independent replacement or tampering with the electronics without the approval of the dealer may result in denial of warranty service for other components. It is better to contact an official dealer.
⚠️ Attention: After any replacement of the steering shaft or amplifier on a Nissan Qashqai, the steering angle sensor calibration procedure is mandatory, otherwise the system will not be able to work correctly.