Crossover owners Skoda Kodiaq Often faced with the need to maintain the brake system, especially in urban operation with frequent traffic jams. Rear brake mechanisms in this model have a design feature that requires careful approach when replacing consumables. Incorrect actions can lead to damage to an expensive electric motor or disruption of the parking brake.
The replacement procedure differs from the classic mechanical calipers, as it uses an electromechanical hand brake actuator. You will need not just to squeeze the piston, but to transfer the mechanism to the service mode. Ignoring this stage will make it impossible to install new ones. brake pads No serious damage. We will take a closer look at each step so you can get the job done yourself and safely.
Preparing tools and selecting consumables
Before starting work, you need to make sure that you have the right tool. A standard set of keys may not be enough, as the caliper mounting often requires specific heads. You will need a set of end heads, a dynamometer key to tighten bolts properly, and a piston-pressure device if you are not using a diagnostic scanner.
When choosing spare parts, it is important to pay attention to the articles. For Skoda Kodiaq There are different versions of brake mechanisms depending on the engine size and type of drive. Mistakes in selection can lead to the fact that the new part simply does not stand in place or will have the wrong geometry. It is recommended to use original parts or proven analogues from manufacturers of the level of TRW, ATE or Brembo.
- ๐ง Set of heads and rattle (usually need heads of 13, 15 and 17 mm)
- ๐ฉ Dynamometer key for controlling the moment of tightening (important for bolts of guides)
- ๐ ๏ธ Piston compression (special key or OBD2 diagnostic scanner)
- ๐งผ Brake cleaner and copper lubricant for guides
โ ๏ธ Warning: Never use screwdrivers or mounts to press the piston unless you have the parking brake motor switched off. This is guaranteed to disable the servo drive, the repair of which is very expensive.
Dismantling the wheel and removing the caliper
Start by fixing the car. Set it on a flat surface, tighten the hand brake (if it is mechanical, but on the Kodiaq it is electronic, so it is better to use stops under the front wheels) and turn on the first gear. Remove the wheel, previously loosening the mount bolts on the standing car.
After dismantling the wheel, you will see a brake caliper, which is fastened by two guide bolts. Then, put them in a key of the appropriate size. Be prepared for the fact that the bolts can be tightened with great effort or, conversely, sour from time to time. Use penetrating lubricant if they don't lend themselves, but avoid getting liquid on the brake disc.
Remove the caliper by hanging it on a wire or hook. In no case do not leave it hanging on the brake hose - this can lead to damage to the rubber shell and leakage of brake fluid. Carefully remove the old pads from the brace that remains on the hub.
- ๐ Check the condition of the brake disc for the presence of deep furrows and cracks
- ๐ Inspect the anthers of the guide bolts - if damaged, they must be replaced
- ๐งฝ Clean the staples from dust and dirt before installing new pads
- โ๏ธ Check the presence of lubrication on the guides, if necessary, apply a new one.
- Original set
- Chinese budget set
- Specialized tool
- Diagnostic scanner
Technical nuances of electromechanical drive
The most critical stage is working with a caliper piston with a built-in electric motor. Under normal conditions, the piston cannot be pressed mechanically, since there is a screw pair inside. If you try to do this without preparation, you will break the gears of the gearbox.
There are two ways to solve this problem. The first is the use of a diagnostic scanner that translates the caliper into service mode via the OBD2 interface. The second is a manual method using a special adapter that is inserted into the slits of the piston and allows you to turn it manually, imitating the operation of the motor.
When the piston is reversed (pressed), the liquid level can rise and spill over the edge. It is recommended to pump a little liquid from the tank with a syringe.
- ๐ Use the scanner to put it into mode
Service ModeorParking Brake Retraction - ๐ Or use a special key to rotate the piston clockwise.
- ๐ Watch the level of brake fluid to avoid overflows
- ๐ After replacement, be sure to transfer the mechanism back to working mode.
โ๏ธ Preparation of electrosupport
The process of installing new pads and assembly
Installing new brake pads shall be carried out on a clean and lubricated brace. Apply a special high-temperature lubricant to the contact places of the pad with the metal bracket, but avoid getting lubricant on the friction lining. This will ensure smooth running and no creaking during braking.
Install new pads in the brace, making sure they sit tight and have no backlashes. If new pads have additional spring latchers or soundproofing plates, they must be installed according to the instructions. Then return the caliper to place, combining the holes under the guide bolts.
Tighten the guide bolts with the recommended moment. For Skoda Kodiaq This parameter is usually about 30-35 Nm, but it is better to consult the technical documentation of a particular model of the year of release. Distortion of the caliper due to improper tightening can lead to rapid wear of one of the pads.
โ ๏ธ Warning: Do not pull the guide bolts. Their thread has a small pitch, and if you exceed the puffing moment, you can tear the thread in the aluminum hub, which will require replacing the entire caliper or hub.
What to do if the sensor of wear of the shoe worked?
If the car is equipped with an electronic wear sensor, after replacing the pads, you need to reset the error through a diagnostic scanner. Otherwise, the light bulb on the dashboard will burn constantly, even if the problem is fixed. In some cases, the sensor itself needs to be replaced if it has already worked before the shoe is replaced.
Braking adjustment and inspection
After assembly of the mechanical part, it is necessary to perform the electronics adjustment. If you used the scanner to transfer to service mode, now you need to return the caliper to working position. If you used the manual method, just rotate the piston to the point until it rests in a new shoe.
An important step is the pumping of the brakes. When replacing the pad, air could get into the system, especially if you opened the fitting or removed the caliper completely. Check the brake pedal: it should be elastic. If the pedal is "soft" or fails, it is necessary to pump the rear circuit.
Before starting the movement, be sure to perform several test braking at low speed. This will help the pads to get attached to the disk and make sure that the parking brake is working properly. Make sure that the handbrake is working clearly and the car is securely fixed on the slope.
- ๐ Press the brake pedal several times before resistance appears
- ๐ Conduct a test trip with smooth braking
- ๐ Check the parking brake on the slope
- ๐ Check the wheels for brake fluid leakage
| Parameter | Meaning | Units of measurement | Note |
|---|---|---|---|
| Guide tightening torque | 30-35 | Nm | Depends on year of manufacture |
| Wheel tightening torque | 120-140 | Nm | Definitely with a dynamometer key |
| Thickness of brake disc (min) | 20.0 | mm | Below this value, the disk must be replaced. |
| Friction lining thickness | 2.0 | mm | Critical wear |
Features of service depending on the configuration
Owners of all-wheel drive versions 4x4 They may encounter additional nuances. On such cars, the rear axle often has more massive brake mechanisms, which requires a greater compression force of the piston. It is also worth considering that the ESP stabilization system may be sensitive to changes in the braking system.
For models with Auto Hold, the error reset procedure is particularly important. If the system is not properly calibrated, the function may not work properly, which will create discomfort when driving in traffic jams. In this case, it is recommended to contact specialists for adaptation.
Watch the brake fluid. In modern cars, it is hygroscopic and absorbs moisture from the air. When replacing the pads - a great reason to check its condition and, if necessary, replace. Old liquid can boil with intense braking, which will lead to loss of brake effect.
Before starting work on replacing the pads, be sure to turn off the battery terminal. This will prevent accidental operation of the parking brake electric motor when power is supplied and possible errors in the system.
The key to a successful replacement is the correct translation of the electromechanical caliper into service mode. Without this step, the installation of new pads is impossible without damage to the mechanism.
Diagnosis of possible problems after replacement
Sometimes after replacing the pads, owners notice extraneous sounds or vibrations. This may be due to improper installation or the presence of burrs on the brace. If the creak does not disappear after working, check for lubrication on the metal contacts of the pads.
Vibration when braking often indicates a problem with the brake rotor, which may have become warped or worn unevenly. In such cases, simply replacing the pads will not solve the problem, and resurfacing or replacing the discs will be necessary. Do not ignore these symptoms as they have safety implications.
If the brake warning light on your dashboard lights up, this may indicate a wear sensor error or a problem with the electric motor. In this case, diagnostics will be required using a scanner to read error codes and then reset them.
- ๐ Creaking can be eliminated by cleaning and lubricating the contact pads
- ๐ Vibration requires checking the geometry of the brake discs
- ๐ก The error on the panel is eliminated by a diagnostic scanner
- ๐ If the pedal fails, immediately check the system for leaks
โ ๏ธ Attention: Ignoring errors in the brake system electronics on the Skoda Kodiaq can lead to the rear wheels locking during emergency braking due to incorrect operation of ABS and ESP.
How to check pad wear without removing the wheel?
On some Skoda Kodiaq models you can visually assess wear through the hole in the caliper using a flashlight. However, an accurate assessment can only be made when dismantling the wheel, since the outer edge of the pad may be intact, but the inner edge may be worn unevenly due to a jammed guide.
FAQ: Answers to frequently asked questions
Do I need to change the pads on both axles at the same time?
No, it is not necessary to change the pads on both axles at the same time. Typically the rear pads wear out slower than the front ones. However, if you are changing pads, it is recommended to check the condition of the discs and guides on all wheels.
Can regular wrenches be used to press in the piston?
No, regular wrenches will not work for a piston with an electric motor. It is necessary to use a special adapter for rotating the splines or a diagnostic scanner to switch to service mode. Trying to force the piston in will break the mechanism.
How often do you need to change the rear pads on a Skoda Kodiaq?
The service life of the rear pads depends on driving style and operating conditions. On average, they last from 40 to 60 thousand kilometers. It is recommended to check their thickness at every maintenance.
What should I do if the parking brake error light comes on after replacement?
An error may appear if adaptations have not been reset via the scanner. Also check that the wear sensor is installed correctly and that the motor connector is securely connected.
Do I need to bleed the brakes after replacing the pads?
If you did not open the fitting or remove the caliper completely, bleeding is not necessary. However, if the pedal has become soft, it is better to bleed the rear circuit to remove trapped air.