Replacing rear brake pads with ล koda Octavia A7 A procedure that many car owners prefer to do on their own. This allows you to save on maintenance and better understand the design of your car. However, working with the brake system requires accuracy and knowledge of key nuances: from the correct selection of pads to the correct installation of the port.
In this article, we will examine the entire process in detail - from the diagnosis of wear to the final check. We will pay special attention to the typical mistakes that beginners make, and the specifics of the Octavia A7 (including models with electronic hand brake). You will learn what tools are really needed, how to avoid brake cylinder damage and when to contact the professionals.
When do you need to change the rear pads on an Octavia A7?
The manufacturer recommends checking the condition of the brake pads every 15,000โ20,000 km, but their actual service life depends on driving style, quality of materials and operating conditions. On Octavia A7 rear pads wear slower than the front, but you can not ignore their condition - this is fraught with damage to the brake disc and a decrease in the effectiveness of braking.
The main signs that it is time to change the shoes:
- ๐ Creaking or whistling when braking (most often caused by an indicator of wear).
- ๐ Increased braking distance or a โwobblyโ brake pedal.
- ๐ Thickness of friction layer less than 2-3 mm (Visually through the viewing window or after removing the wheel).
- ๐จ Vibrations or beating in the brake pedal (may indicate deformation of the disc due to worn pads).
On Octavia A7 with electronic handbrake (EPB) It is also worth paying attention to the messages of the onboard computer. If the system makes a mistake Brake Pad Wear or Service Brake SystemThis is a direct signal to replace. Also on some modifications (for example, with engines). 1.8 TSI or 2.0 TDI) pads may wear out more quickly due to a more aggressive distribution of braking forces.
- Every 10,000 km
- Only when a squeak appears
- Once a year before maintenance
- Never checked
Which pads should I choose to replace?
Selecting brake pads for ล koda Octavia A7 It depends on the year of production, type of engine and driving style. Original pads from VW Group have an article number 5Q0 698 451 (for most of the modifications), but their price is often overpriced. Alternative options from proven brands can be no less high-quality.
Recommended analogues:
| Brand | Article | Features | Average price (set) |
|---|---|---|---|
| TRW | GDB3436 |
Low dust levels, suitable for EPB | 2 500โ3 000 โฝ |
| Brembo | P 68 020 |
High friction coefficient, long service life | 3 200โ3 800 โฝ |
| ATE | 13.0460-7206.2 |
Optimal for urban driving, minimal wear of disks | 2 800โ3 300 โฝ |
| Bosch | 0 986 494 797 |
The universal variant is suitable for most A7 modifications. | 2 200โ2 700 โฝ |
When choosing, pay attention to:
- ๐ง EPB Compatible (if your Octavia A7 equipped with an electronic handbrake.
- ๐ ECE R90 certification โ guarantee of compliance with European safety standards.
- ๐ฅ Friction material composition: Ceramic pads are less dusty but may be less effective at low temperatures.
โ ๏ธ Attention: Do not install pads with metal inserts on cars with alloy wheels - this will accelerate their wear. Also avoid cheap no-name brands: they can โblownโ when heated and increase the braking distance.
Necessary tools and preparation
Replacement of the rear brake pads with Octavia A7 you will need:
- ๐ง Jack and stops (or lift).
- ๐ฉ Socket wrenches 13, 15 and 17 mm (for rails and rails).
- ๐ง 7 mm hexagon (for some models of suffocation).
- ๐ ๏ธ Brake cylinder piston remover (or clamp with adapter).
- ๐งด Brake fluid DOT 4 (for the slack after the slack).
- ๐งผ Brake cleaner (for example, LIQUI MOLY Bremsen-Reiniger).
- ๐ง Torque wrench (Optionally, for accurate tightening of guides).
Before starting work:
- Park the car on a level surface and fix the front wheels stops.
- Relax the bolts of the rear wheel mount (but don't remove it completely).
- If you have Octavia A7 with EPB, be sure to deactivate the electronic handbrake via the on-board computer menu or diagnostic scanner (VCDS, OBDeleven). Otherwise, the cylinder piston will not be able to press.
- Prepare new pads and guide grease (for example, Slipkote 220-R DBC).
Loosen the rear wheel bolts|
Deactivate EPB (if any)|
Prepare tools and new pads|
Check the brake fluid level (add if necessary)|
Clean the caliper and disc from dirt -->
โ ๏ธ Attention: Never press in the piston of a brake cylinder if the pads are not yet removed - this can lead to distortion and leakage of brake fluid. Also, do not use a hammer to โfreeโ stuck pads: this will deform the brake rotor.
Step-by-step instructions for replacing pads
The process of replacing rear pads Octavia A7 differs from the front ones due to the design of the caliper and the presence of a parking brake (mechanical or electronic). Let's consider a universal algorithm:
Step 1. Removing the wheel and accessing the caliper
Raise the car with a jack, remove the wheel and clean the brake mechanism from dirt. On Octavia A7 The caliper is secured with two hexagon socket bolts (usually 7 mm). Unscrew them, but do not remove the caliper completely - just fold it up.
Step 2. Removing old pads
Carefully remove the old pads. If they are stuck to the guides, use a screwdriver as a lever, but without excessive force. Please note wear indicator (metal plate) - on new pads it should be directed towards the brake disc.
Step 3. Pressing in the cylinder piston
This is the most critical stage. On Octavia A7 the piston must not only be pressed in, but turn clockwise (to do this, use a special puller or clamp with an adapter). If you have EPB, first deactivate it through diagnostics. After pressing, check the brake fluid level - it will rise, you may need to pump out the excess.
Step 4. Installing new pads
Before installation, apply a thin layer of lubricant to caliper guides and back side of the pads (at points of contact with the caliper). Make sure the spring clips (if equipped) are installed correctly. Some pads have marks INNER (internal) and OUTER (external) - do not confuse them!
Step 5: Assembly and Testing
Install the caliper in place, tighten the bolts to a torque 25โ30 Nm (for Octavia A7 this is critical - overstretching leads to deformation). Put the wheel on, lower the car and press the brake pedal several times until the pads are in working position. If you have EPB, activate it through the menu or scanner.
After replacing the pads, avoid sharp braking for the first 200โ300 km - new friction linings need to be broken in. Also check for brake fluid leaks around the cylinder after 1-2 days of use.
Common mistakes and how to avoid them
Even experienced car owners sometimes make mistakes when replacing rear pads with Octavia A7. Here are the most common:
1. Incorrect piston pressing
On models with EPB the piston must not only be pressed, but crank. If this is not done, it will lock and the caliper will not fit into place. Also don't forget reset parking brake in diagnostic mode - otherwise the piston will not budge.
2. Ignoring lubrication of the guides
Dry guides lead to caliper jamming and uneven pad wear. Use special high temperature grease (not ordinary lithol!). On Octavia A7 The guides often get stuck - clean them with a wire brush before applying lubricant.
3. Retightening the caliper bolts
Recommended tightening torque for caliper bolts is 25โ30 Nm. Exceeding this value leads to deformation of the flange and uneven fit of the pads. If you don't have a torque wrench, tighten the bolts by hand with moderate force.
4. Failure to follow the assembly order
Make sure that:
- ๐ Spring clips (if equipped) installed symmetrically.
- ๐ Pads don't touch brake cylinder boot.
- ๐ง Caliper bolts are tightened criss-cross (first the lower one, then the upper one).
โ ๏ธ Attention: If, after replacing the pads, the brake pedal becomes โsoftโ or goes to the floor, immediately check the tightness of the system. On Octavia A7 with1.6 TDIor2.0 TSIThis may indicate air in the circuit or a faulty master cylinder.
On vehicles with EPB, after replacing the pads, be sure to perform the parking brake โadaptationโ procedure through the diagnostic scanner. Without this, the system may not work correctly, and the handbrake indicator will light up on the dashboard.
Features of replacement on models with an electronic handbrake (EPB)
ล koda Octavia A7 with electronic parking brake requires additional manipulations. The main difficulty is pressing the cylinder piston, which cannot be done without deactivating the EPB. Here's how to do it right:
Method 1: Via on-board computer
- Turn on the ignition (without starting the engine).
- Go to menu
Settings โ Service โ Electronic handbrake. - Select an item
Deactivation for maintenance(on some software versions -Service Mode). - Follow the on-screen instructions (usually requiring you to press and hold the brake pedal).
Method 2: Through a diagnostic scanner
If the on-board computer menu does not allow you to deactivate the EPB, use a scanner (for example, VCDS or OBDeleven):
- Connect the scanner to the OBD-II connector.
- Select block
53 โ Parking Brake. - Activate the function
Deactivate EPB for Pad Replacement. - Press in the piston using a puller (turning it clockwise).
After replacing the pads be sure to perform EPB adaptation:
- In the same block
53selectBasic Settings. - Run the procedure
Adaptation of Brake Pads. - Follow the scanner's prompts (usually requiring you to press the brake pedal several times).
What happens if you don't adapt the EPB?
If you skip the adaptation of the electronic handbrake, the system will not โlearnโ about the new pads. This will lead to:
- False activation of the pad wear indicator on the dashboard.
- Incorrect operation of the function Auto-Hold (automatic hold on the rise).
- Possible spontaneous tightening of the handbrake while driving (in rare cases).
Checking after replacement and running in new pads
After installing new pads, you need to perform several checks:
1. Brake system test
- ๐ Ride at low speed (20โ30 km/h) and brake gently several times.
- ๐ Check for beating in the pedal and any extraneous sounds.
- ๐ฅ Make sure the car brakes evenly (without pulling to the side).
2. Checking the brake fluid level
After pressing the piston, the liquid level in the tank will rise. If it exceeds the mark MAX, pump out the excess with a syringe. Use only new DOT 4 fluid - mixing with other classes is unacceptable.
3. Running in the pads
First 200โ300 km avoid:
- ๐ฆ Sharp braking (especially at high speeds).
- ๐๏ธ Long braking on descents (use engine braking).
- ๐ฟ Water getting on heated pads (for example, when driving through puddles immediately after heavy braking).
Complete break-in of the pads takes up to 500 km. During this period, braking distances may be slightly longer than usual.
If after replacing the pads a slight metallic squeak appears in the first days, this is normal. It is caused by the running-in of the friction material. But if the squeak does not disappear after 500 km, check the quality of the pads or their compatibility with the discs.
FAQ: Frequently asked questions about replacing rear pads on Octavia A7
Is it possible to change the pads on only one wheel?
No, the pads are always changed in pairs on the same axis. Even if there is less wear on one wheel, different degrees of pad break-in will lead to uneven braking and the car pulling to the side.
How often do you need to change brake discs and pads?
Brake discs on Octavia A7 serve on average 80,000โ100,000 km. Their replacement is required when:
- Disc thickness less than 10.5 mm (nominal - 12 mm).
- The presence of deep grooves or cracks.
- Steering wheel beating when braking (indicates deformation).
If the discs are in good condition, you can leave them, but be sure to clear the work surface of the bead (metal buildup along the edge).
What should I do if the parking brake light comes on after replacing the pads?
On Octavia A7 with EPB this indicates:
- Incomplete adaptation of the parking brake (see section on EPB).
- Malfunction of the pad wear sensor (check the connector connection).
- Incorrect pressing of the piston (if it is not completely seated in the cylinder).
Reset the error using the diagnostic scanner or turn off/on the ignition 3 times in a row (this helps on some software versions).
What lubricant should I use for the caliper guides?
For Octavia A7 fit:
- Slipkote 220-R DBC โ universal high-temperature lubricant.
- LIQUI MOLY Bremsen-Anti-Quitsch-Paste - also prevents squeaks.
- ATE Plastilube - a budget option, but requires more frequent updates.
Do not use graphite lubricant, lithol or WD-40 - they cannot withstand high temperatures and destroy rubber seals.
Is it possible to replace the pads on an Octavia A7 with a 1.8 TSI engine yourself?
Yes, the replacement algorithm does not depend on the engine type. However, on Octavia A7 1.8 TSI (especially when paired with DSG-7) the braking system experiences increased loads due to more dynamic acceleration. We recommend:
- Choose pads with increased friction coefficient (for example, Brembo or Ferodo Premier).
- Check the condition of the brake discs every time you replace the pads.
- Use brake fluid DOT 4+ with a higher boiling point.