Owners Skoda Rapid 2015 models are often faced with one of the most critical problems in the suspension - the appearance of extraneous noise in the steering column. This model, built on the PQ25 platform, is equipped with an electric power steering (EPS), which is integrated directly into the rack mechanism. Problems with it can arise both due to natural wear and tear, and due to factory assembly features.
Ignoring even a slight knock can lead to complete failure of the amplifier, making driving physically difficult and dangerous. Diagnostics using specialized equipment helps to identify the problem at an early stage, when you can still get by by replacing the repair kit or updating the electronic control unit.
The main symptoms of a faulty steering mechanism
The first and most obvious sign of problems is the appearance of a knocking or squeaking sound when turning the steering wheel, especially at low speeds or during parking maneuvers. The sound is often localized in the area of the steering column, but can also be transmitted to the floor of the cabin, frightening the driver. Owners often describe this as a “crunching” or “metallic grinding” sound that gets worse when the steering wheel is turned to extreme positions.
The second important symptom is the presence of an error on the dashboard. A warning about a system malfunction may appear on the on-board computer display ESP or electric power steering. In some cases, the steering wheel becomes “wobbly” - there is no feedback from the road, or, conversely, jerks and jamming appear at certain turning points.
It is also worth paying attention to fluid leaks if your car is equipped with a hydraulic booster (although this is rare for 2015, since electric ones have been installed en masse). However, even in electrical systems there can be problems with the boot seals, through which moisture and dirt get into the mechanism. This leads to corrosion of the rack and rapid failure of the bushings.
Causes of problems on the Rapid model
Construction Skoda Rapid involves the use of an electric power steering mechanism, where the gear motor is mounted directly on the rack shaft. One of the common causes of knocking is wear of the support bushings, which over time lose their shock-absorbing properties. As a result, the shaft begins to hit the body, creating a characteristic knock, which is often mistaken for a malfunction of the shock absorbers.
Another critical problem is the wear of the worm gear in the ESD motor itself. The teeth of the worm and gear wear out over time, which leads to play and the steering wheel biting. This is especially true for cars that are often driven on bad roads or with an aggressive driving style. Repair in this case, it often requires a complete replacement of the unit or a complex overhaul with replacement of gears.
Problems with electronics cannot be ruled out. The torque sensor located inside the steering column may give incorrect readings, which is why the control unit begins to send incorrect commands to the amplifier motor. This causes steering jerks and errors that do not disappear even after restarting the engine. It is critical to check the torque sensor before replacing the entire rack.
Diagnostics and detection of hidden defects
To accurately determine the malfunction, it is necessary to conduct computer diagnostics. By connecting the scanner to the OBD-II connector, you can read error codes that will indicate a specific component. Errors often occur in the steering angle sensor or in the amplifier motor control circuit. However, an error code does not always mean that the unit needs to be replaced - sometimes flashing it is enough.
Mechanical diagnostics are carried out on a lift with the front wheels hanging. A specialist should check the play in the steering tips and rods, as well as the condition of the boots. If the boot is torn, abrasive has gotten inside, which acts like sandpaper on the rail. Visual inspection often reveals traces of grease leaks or corrosion on the metal part of the rack.
An important step is to check the condition of the support bushings. To do this, use a special stethoscope or simply press your hand tightly against the rack body while rotating the steering wheel. If the knocking noise comes from the rack housing, and not from the rods, then the problem is internal. Sometimes the knocking sound is caused not by the rack itself, but by an unadjusted fastening of the steering column to the body.
⚠️ Attention: Do not attempt to remove the steering rack yourself without first disconnecting the battery. The system contains capacitors that can store charge, and there is also a risk of airbag deployment if the speaker contacts are handled carelessly.
- Knocking sound when turning the steering wheel
- Error on the dashboard
- Pulling the car to the side
- Heavy steering
Unit repair and restoration options
Depending on the problem identified, repairs can range from simple anther replacement to a major mechanism repair. If the problem is in the bushings, they can be replaced without removing the rail from the car, although this requires care. Replacement of bushings allows you to eliminate knocking and extend the life of the node for several years, subject to high-quality installation.
When wearing the worm gear or gears, a complete dismantling of the rack and disassembly of the body is required. In workshops, they often offer replacement of gears with reinforced analogues or the use of repair kits with increased dimensions. This is a complex process that requires accurate selection of seats and proper adjustment of engagement.
The electronic part is repaired by replacing the torque sensor or soldering the contacts in the control unit. In some cases, zero adjustment and calibration through a diagnostic scanner helps.
☑️ Repair procedure
| Type of repair | Difficulty | Due date | Approximate cost |
|---|---|---|---|
| Replacing bushings | Average | 2-3 hours | from 3000 rub. |
| Replacing anthers | Low | 1-1.5 hours | from 1500 rub. |
| EUR repair (sensor) | High | 3-4 hours | from 8,000 rubles. |
| Major renovation | Very high | 1-2 days | from 15,000 rub. |
What goes into the overhaul?
Complete dismantling of the mechanism, replacement of all bearings, bushings, glands, cleaning of the body, replacement of worn gears, soldering of contacts in the control unit and complete assembly with adjustment of gaps.
Steering rack replacement procedure
If repair is not possible or economically feasible, a complete replacement of the node will be required. The process begins with the battery shutdown and the removal of plastic linings in the underhood space. The wheels must be removed to access the rods and tips. The rods are then turned to the sleeves, and the rods are removed from the sleeve.
Then disconnect the electrical connectors from the EUR motor and sensors. It is important to mark all the wires so as not to confuse them when installing a new node. The bolts of the mounting of the rail itself to the body of the car are unscrewed. Usually there are four of them, located on the perimeter of the support. Reiki can be severe, so it is recommended to use a stand or help from a partner.
After installing a new or restored rail, reverse installation must be performed. Pay special attention to tightening the mounting bolts with the correct moment specified in the service book. Then the steering tips are installed and the collapse-divergence is performed. No procedure. wheel alignment The operation of the car is impossible due to rapid wear of tires and instability on the road.
Before starting work, be sure to mark the position of the steering wheel and thrust with a marker to keep the angles of the wheel installation as close as possible to the factory before the collapse-divergence procedure.
Software adaptation and configuration
After the physical installation of a new rail or after repair of the electronic unit, it is necessary to carry out the adaptation procedure. Without this, the steering wheel may not work correctly: the amplifier may not turn on or work too aggressively. Adaptation is performed using specialized diagnostic equipment, such as VAG-COM or VCDS.
In the diagnostic menu, you need to go to the block Steering Assistance (Electric power steering) Select a function Basic Settings and calibrate the steering angle sensor. To do this, you need to align the wheels evenly and turn the steering wheel to the extreme positions left and right, holding them for several seconds. The system will remember the limits of the move.
It may also require resetting adaptations and zero position training. If you do not have the necessary equipment, it is better to entrust this procedure to professionals. Incorrect calibration can cause the steering wheel to turn spontaneously or the amplifier to operate with a delay, which is critical for safety.
⚠️ Note: After replacing the RAIL with EUR, be sure to check the stabilization system (ESP) work. Often, after a node is replaced, the ESP system is locked until all angle and speed sensors are fully adapted.
The procedure for calibrating the torque sensor is mandatory after any steering intervention, otherwise the amplifier may work with errors.
Prevention and service life extension
To ensure that the steering rack is on Skoda Rapid It was long, it is important to regularly check the condition of the anthers. The torn anther is a guarantee of getting dirt and water inside the mechanism. If cracks or ruptures are found, they should be replaced immediately. This is a simple and inexpensive procedure that saves the rack from expensive repairs.
Avoid sharp and strong steering in extreme positions. Keeping the steering wheel in the extreme position for more than 5 seconds under load (for example, when parking) is not recommended, as this creates excessive pressure in the hydraulics (if any) or overheating of the EUR motor. Try to start turning the steering wheel in advance, without pushing to the end.
Regularly conduct diagnostics of suspension. Lufts in steering rods and tips transmit shock loads to the sleeve body, accelerating wear of the bushings. Replacing worn suspension elements is not just a matter of comfort, but also the preservation of the steering mechanism life. Timely maintenance saves significant funds.
⚠️ Warning: In winter, after operation on reagents, be sure to wash the bottom of the car. Salts and chemicals accelerate the corrosion of metal parts of the reiki and corrode protective coatings, which leads to rapid failure of the nodes.
How often do you change the anthers?
It is recommended to check the condition of the anthers at each scheduled maintenance. At the slightest sign of damage, the replacement should be carried out immediately, without waiting for the knock.
FAQ: Frequently asked questions from owners
Why does the steering rack knock on the hot one?
Knocking on hot can be caused by the expansion of the metal due to heating or change in the viscosity of the lubricant. If the sleeves are worn, the gap increases with heating, which increases the backlash and knocking. It may also indicate problems with the mounting of the EUR motor.
Can I drive with an electric power steering error?
It is technically possible to drive, as the mechanical connection is maintained. However, the steering wheel will become very heavy, which will require considerable physical effort to maneuver. This is dangerous in emergency situations, so it is recommended to fix the malfunction as soon as possible.
How much does the new steering rack cost for Rapid 2015?
The price of the new original rail ranges from 30,000 to 50,000 rubles, depending on the configuration and availability of EUR. Refurbished options are two to three times cheaper, and repairing an existing node is even cheaper, but takes time.
Do I need to do a wheel alignment after replacement?
Yes, I will. Any interference with steering, especially the replacement of the rail or thrust, violates the angles of the wheels. Without correction, the tyres will wear out unevenly, and the car can lead to the side.
What if the steering wheel vibrates when moving?
The vibration can be caused by an imbalance of the wheels, but if it is amplified when turning, the problem may be in the rail. Check the condition of the steering column cardan and the rack sleeve. Sometimes the problem is solved by replacing the gimbal hinge.