Replacing brake elements with Skoda Octavia A5 This is a procedure that requires care, especially taking into account the design features of the rear axle. Many owners are faced with the fact that standard methods of removing pads do not work due to the presence of an electromechanical parking brake. Ignoring the specifics of the drive can lead to serious breakdown of the tightening mechanism.

Unlike the front wheels, where the piston is simply pressed in, the rear caliper requires a special procedure for returning the piston. If you do not know how to properly compress the piston without damaging the threaded mechanism, it is better to entrust the work to professionals. However, with the right tool and knowledge, you can save a significant amount by performing the service yourself.

Preparing tools and selecting consumables

Before you start dismantling the wheels, you need to make sure you have all the tools and the right parts. Errors in the preparation stage often result in damage to the piston thread or inability to install new parts.

For the job you will need a standard set of sockets, a jack, safety stands and a specialized device for compressing the piston. Without a special scanner or mechanical adapter, compress the piston on a model with electronic handbrake almost impossible.

  • πŸ”§ Socket set (usually 13, 15, 17 mm) and ratchet
  • πŸ›  Special piston compression tool or diagnostic scanner
  • 🧀 Set of new brake pads and caliper guides
  • 🧴 Guide lube and brake cleaner

The choice of pads themselves is critical to the safety and longevity of the braking system. Original from Skoda (often produced under the brand ATE or TRW) guarantees a perfect match, but there are high-quality analogues from Brembo or Textar.

Manufacturer Material type Service life (approx.) Features
Skoda (OEM) Semi-metallic 40,000 - 60,000 km The perfect balance of noise and efficiency
ATE Ceramic 50,000 - 70,000 km Less dust, stable braking
TRW Semi-metallic 35,000 - 50,000 km Affordable price, good braking
Budget analogues Organic 20,000 - 30,000 km Rapid wear, squeaking possible

⚠️ Attention: Never use old pads if they are cracked, chipped or worn more than 70%. This can lead to destruction of the brake disc and complete loss of braking efficiency.

Dismantling the wheel and removing the caliper

The first step is to safely jack up the vehicle and remove the wheel. Make sure that the car is on a level surface and the handbrake (before replacing) is tightened so that the car does not roll. After removing the wheel you will have access to the brake mechanism.

Inspect the condition of the brake disc. If there are deep grooves or runout, replacing the pads may not give the desired result and will require resurfacing or replacing the disc. Also check for signs of brake fluid leakage from the piston boot.

  • πŸ” Inspect the brake disc for critical wear
  • πŸ”§ Unscrew the two caliper guide bolts (usually from the bottom)
  • 🧼 Clean the seats from dirt and rust

Removing the caliper requires care to avoid damaging the brake hose. Don't let the caliper hang on the hose, use a wire or hook to hang it from the suspension spring. This will prevent the hose from stretching and damaging the inner rubber.

⚠️ Caution: If the caliper guides become stuck, do not use excessive force. Use a penetrating lubricant and give it time to work, otherwise you may strip the threads in the caliper housing, requiring an expensive repair.

Replacing guides and cleaning the mechanism

Often the problem of squeaking or uneven wear lies not in the pads themselves, but in the guides. The old grease dries out and the caliper stops moving freely, jamming one of the pads. This leads to overheating and rapid wear.

It is necessary to completely remove the guide pins from the anthers and thoroughly clean them of old dirt. Use brake cleaner to remove any remaining oil and carbon deposits. Apply new high temperature grease specifically designed for calipers.

β˜‘οΈ Guide maintenance

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  • πŸ›‘ Check the integrity of the rubber boots on the guides
  • πŸ›  Apply special lubricant (not lithol or grease!) to your fingers
  • βœ… Reinstall the guides until they click

After cleaning and lubricating the guides, be sure to check how freely the caliper bracket moves. It should move without jamming. If the bracket is stuck, the entire part may need to be replaced or the guides may need to be repaired.

Why can’t you use conventional lubricant? Conventional lubricants (Litol-24, grease) are washed out with water and cannot withstand high braking temperatures, which leads to the caliper jamming after just a few thousand kilometers.-->

Returning the piston on a car with an electronic handbrake

This is the most difficult stage of the procedure for owners Octavia A5 with electronic parking brake. The mechanical piston has a special thread that cannot simply be pressed in with a screwdriver. Trying to do this without turning off the electronics will break the motor mechanism.

There are two ways to solve this problem. The first is to use a diagnostic scanner with a brake service feature that will move the piston to the replacement position. The second is the use of a mechanical adapter with a rotating head, which simulates the operation of a motor.