Ε koda Octavia A5 is one of the most popular models of the Czech brand, but even it has weak points. Owners often encounter problems with the rear wiper: it either stops working, sometimes creaks, or leaves streaks. In this article, we will look at all the nuances - from choosing brushes to electrical diagnostics, so that your rear view always remains clear.

Feature rear wiper on Octavia A5 (in liftback and station wagon bodies) - its compact size and specific mounting. Many car owners do not know that the brush is here has a unique size of 300 mm (versus standard 350–400 mm on other machines), and the drive mechanism often suffers from corrosion. We have collected all the relevant information, including spare part numbers, connection diagrams and repair life hacks.

Rear wiper design Octavia A5: device and principles of operation

Rear wiper on Octavia A5 (2004–2013) consists of several key elements:

  • πŸ”§ Electric motor β€” located under the plastic panel in the trunk, responsible for the rotation of the shaft.
  • πŸ”— Traction and leverage - transmit movement from the motor to the brush. They often rust or break when frozen.
  • 🧹 Brush β€” original size 300 mm (article 5E1 955 425 A), but there are analogues from Bosch, HELLA and Valeo.
  • ⚑ Fuse and relay β€” located in the mounting block under the steering wheel (fuse F37 (10A), relay J317).

When the rear wiper is turned on, the signal comes from the steering column switch through the comfort control unit (J393) to the motor. If the system works correctly, the brush makes 40–50 movements per minute. In practice, owners are faced with the fact that the janitor:

  • ❌ Doesn't turn on at all (electrical or motor problems).
  • ⚠️ Moves jerkily (rod wear or shaft corrosion).
  • πŸ’§ Does not clean the glass (worn out brush or dirty windshield).

Interesting fact: on Octavia A5 with factory parking sensors, the rear wiper automatically turns on when reversing if the switch lever is in the INT (interval). This is implemented via the CAN bus and the control unit J533 (Gateway).

πŸ“Š How often do you use the rear wiper on your Octavia A5?
  • Only in the rain
  • Regularly, especially in winter
  • I hardly use it
  • Only when washing

Typical faults: why doesn't the rear wiper work?

According to statistics from service centers, 60% of problems with the rear wiper are Octavia A5 associated with electrician, 30% - from mechanics, and only 10% - with brush wear. Let's look at the main symptoms and their causes:

Symptom Possible reason Diagnostic method
The wiper does not respond to the switch Fuse blown F37, relay is faulty J317, wiring break Check the fuse, test the circuit with a multimeter
The brush moves slowly or jerkily Motor shaft corrosion, rod wear, insufficient voltage Remove the plastic protection and inspect the mechanism
The wiper works, but does not clear the glass The rubber part of the brush is worn out, the glass or lever is dirty Try cleaning the glass and lever with alcohol, replace the brush
The brush β€œsticks” in one position Mechanism jammed due to rust or ice Try manually moving the lever, treat with WD-40

Particular attention should be paid fuse F37 β€” he is responsible not only for the rear wiper, but also for heating the rear window. If both functions do not work for you at the same time, most likely this is the problem. It also often fails microswitch in the wiper motor (article no. 5E2 955 531), which is responsible for the parking position of the brush.

⚠️ Attention: If the rear wiper stops working after washing or raining, do not rush to disassemble the mechanism. Often the problem lies in oxidized relay contacts J317. It is enough to remove the relay, clean the contacts and install it back.

Step-by-step instructions: how to remove and replace the rear wiper Octavia A5

Replacing the brush or repairing the rear wiper mechanism Octavia A5 does not require special skills, but will require accuracy. Below are detailed instructions with photos and tips.

1. Removing the wiper blade

The brush is attached to the lever using a plastic clamp. To remove it:

  1. Raise the wiper arm to the vertical position.
  2. Press the plastic lock (located on the side) and pull the brush down.
  3. If the lock does not budge, carefully pry it off with a screwdriver (do not use metal tools to avoid damaging the paintwork!).

2. Dismantling the wiper mechanism

To access the motor and traction you need:

Open the trunk and remove the plastic trim on the right (wiper side)|

Disconnect the negative terminal from the battery|

Remove the glass rubber seal (carefully so as not to tear it)|

Unscrew the 3 motor mounting bolts (10mm wrench)|

Disconnect the power connector from the motor -->

After removing the motor, inspect it for corrosion. If the shaft rotates with difficulty, treat it WD-40 or similar lubricant. Also check the integrity traction β€” it often breaks when you try to turn on a frozen wiper.

3. Installing a new brush or mechanism

When installing a new brush, make sure that it is the correct size (300 mm) and type of fastening. Original articles:

  • πŸ”Ή Rear wiper blade: 5E1 955 425 A (or 5E1 955 425 for facelift).
  • πŸ”Ή Wiper motor: 5E2 955 069 B (since 2008) or 1K2 955 069 F (until 2008).
  • πŸ”Ή Traction (lever): 5E2 955 501/502 (left/right).

When assembling the mechanism, pay attention to correct position of the brush in parking mode β€” it should be in the lower position, parallel to the edge of the glass. If the brush β€œmoves” to the side, check the draft adjustment.

πŸ’‘

Before installing a new blade, wipe the glass and wiper arm with alcohol or glass cleaner. This will remove the silicone film and improve the seal of the rubber.

How to choose a rear wiper blade: original vs analogues

Original rear wiper blade for Octavia A5 costs about 1,500–2,000 rubles, but there are decent analogues on the market starting at 300 rubles. The main thing is to pay attention to:

  • πŸ“ Length - strictly 300 mm (some sellers offer 280 or 320 mm, but they will not fit!).
  • πŸ”— Mounting type - must be Side Pin 9x3 (or 9x4 for facelift).
  • 🌧️ Rubber material β€” it is better to choose brushes with a graphite coating (they last longer and do not creak).

Among the trusted brands:

  • πŸ”Ή Bosch Aerotwin (3397004664) - silent, with an aerodynamic profile.
  • πŸ”Ή HELLA Windshield Wiper (8WG 350 011-121) - a budget option with good cleansing.
  • πŸ”Ή Valeo Silencio (607219) - soft, do not leave streaks.
  • πŸ”Ή SWF (1124003) - original quality, but cheaper.

If you live in an area with frequent rainfall or frost, pay attention to winter brushes with a protective casing (for example, Bosch Winter). They prevent icing and keep the rubber elastic for longer.

⚠️ Attention: Do not buy brushes with a metal frame for Octavia A5! They quickly rust and scratch the glass. The best choice is frameless models or with a plastic base.

Electrical diagnostics: fuses, relays and wiring

If the rear wiper does not turn on, first check fuse F37 (10A) in the mounting block under the steering wheel. It is responsible for the rear wiper and rear window heating circuit. To get to it:

  1. Open the cover of the mounting block (located to the left of the steering wheel, under the decorative panel).
  2. Find the fuse F37 (there is a diagram on the back of the cover).
  3. Remove it with tweezers and check for integrity (or replace it with a known good one).

If the fuse is good, check relay J317 (it is located in the same place, in the mounting block). Often the relay contacts oxidize, especially if the machine is operated in a humid climate. For diagnostics:

  • Remove the relay and inspect its contacts for corrosion.
  • Try replacing the relay with a known working one (for example, from the front wipers).
  • Test the circuit with a multimeter: between the contacts 85 and 86 there should be a resistance of ~80 ohms.

If the problem is not in the fuse and relay, check wiring. The wires in the corrugation between the trunk and the body often fray. To do this:

  1. Remove the plastic trim in the trunk on the wiper side.
  2. Locate the wiring harness that goes to the wiper motor.
  3. Test the wires for a break (resistance should be close to 0 Ohm).

Also don't forget to check steering column switch - sometimes the contacts inside it wear out. To do this, remove the switch and inspect the tracks on the board.

How to check the wiper motor without removing it?

Connect the motor directly to the battery (plus contact 53, minus the body). If it doesn't turn, the problem is in the motor. If it rotates, look for an open circuit or a malfunction of the control unit.

Mechanical repair: rod, lever, motor shaft

Mechanical faults of the rear wiper Octavia A5 usually associated with:

  • πŸ”§ Motor shaft corrosion - due to moisture ingress.
  • πŸ’₯ Breakage of traction β€” when trying to turn on a frozen wiper.
  • πŸ”„ Wear of lever bushings β€” leads to play and incomplete cleaning of the glass.

To repair the mechanical part you will need:

  • πŸ”¨ Key 10 (for removing the motor).
  • πŸ”§ Flat blade screwdriver (for removing plastic clips).
  • 🧴 WD-40 or similar lubricant.
  • πŸ› οΈ Set of new bushings (item no. 5E2 955 511).

Step-by-step repair of rod and lever:

  1. Remove the motor and linkage (as described above).
  2. Inspect the rod for cracks. If it is broken, replace it with a new one (part number 5E2 955 501 for the left side).
  3. Check the lever bushings - if they are loose, replace them.
  4. Clean the motor shaft from rust and lubricate WD-40.
  5. Reassemble the mechanism in reverse order, adjust the position of the brush.

If the motor shaft is severely corroded and does not rotate even after lubrication, you will have to replace the entire motor. The cost of a new motor is from 3,000 rubles (analog) to 6,000 rubles (original).

πŸ’‘

When assembling the rear wiper mechanism, be sure to check that the brush in the parking position does not touch the glass sealing rubber. Otherwise it will wear out quickly.

Common repair mistakes and how to avoid them

Many owners Octavia A5 make typical mistakes when repairing a rear wiper, which lead to repeated breakdowns. Here are the most common:

  1. Using the wrong brush. A brush with a length of 320 mm or with an incorrect attachment will not clean the glass well and may damage the mechanism.
  2. Incorrect assembly of the mechanism. If the rod is installed crookedly, the brush will β€œwalk” along the glass and leave streaks.
  3. Ignoring lubrication. After repairs, many people forget to lubricate the motor shaft, which leads to its rapid wear.
  4. Trying to turn on a frozen wiper. This almost always breaks the rod or motor.

To avoid problems:

  • πŸ”Ή Always check the compatibility of spare parts according to VIN-code or articles.
  • πŸ”Ή After assembling the mechanism, turn on the wiper and check its operation at all speeds.
  • πŸ”Ή In winter, before using the wiper, clear the ice from the glass manually.
  • πŸ”Ή Once every six months, lubricate the motor shaft and check the condition of the brush.

If after repair the wiper is unstable (for example, it turns on spontaneously), the problem may be comfort control unit (J393). In this case, diagnostics with a scanner will be required (for example, VCDS or OBDeleven).

FAQ: Frequently asked questions about the rear wiper Ε koda Octavia A5

Is it possible to install a brush from another model on Octavia A5?

Theoretically, it is possible, but only if it is suitable in size (300 mm) and type of fastening (Side Pin 9x3). For example, brushes from VW Golf V or Audi A3 8P often compatible. However, original brushes or certified analogues (Bosch, Valeo) are guaranteed to fit.

Why does the rear wiper squeak when operating?

The squeak is usually caused by:

  • πŸ”Ή Wear of the rubber part of the brush (replace it).
  • πŸ”Ή Sand or dirt getting between the brush and the glass (clean the glass with alcohol).
  • πŸ”Ή Motor shaft corrosion (lubricate it with silicone grease).

If the squeaking persists, try a graphite-coated brush (for example, Bosch Aerotwin).

How to adjust the position of the brush if it does not reach the edge of the glass?

The position of the brush is adjusted by turning the rod on the motor shaft. To do this:

  1. Remove the brush from the lever.
  2. Loosen the nut securing the rod to the shaft (10 wrench).
  3. Turn the rod in the desired direction (clockwise - the brush will rise, counterclockwise - it will fall).
  4. Tighten the nut and check the operation of the wiper.

If after adjustment the brush still does not clean the edge of the glass, check the wear of the rubber or the curvature of the lever.

What should I do if the rear wiper only works at one speed?

This is a sign of a problem relay J317 or steering column switch. First check the relay (replace it with a known good one). If the problem persists, disassemble the switch and inspect the contacts. In some cases, cleaning the contacts with alcohol helps.

Is it possible to turn off the rear wiper if it is not needed?

Yes, but this will require some electrical intervention. The easiest way is to remove the fuse F37, but then the rear window heating will stop working. An alternative is to disconnect the power connector for the wiper motor (it is located under the plastic panel in the trunk). If you want a complete shutdown, you will have to reflash the comfort control unit (J393).