Problems with car windshield wipers Skoda Fabia the second generation often causes confusion among owners. Symptoms can be very different: from complete system failure to chaotic brush movement that defies control logic. In most cases, the culprit of such vagaries is not the wiper motor, but the control wiper relay, which is often built into the fuse box or located directly under the plastic dashboard panel.
System electronics in Skoda Fabia 2 It is highly reliable, but over time the contacts in the relay oxidize and the internal circuits fail. Understanding the working principle control module allows you to save significant money on visits to the service center. In this article we will analyze in detail the location of the unit, signs of its breakdown and step-by-step instructions for independent replacement or repair.
Localization and design of the wiper control unit
First you need to determine exactly where the element you are looking for is located. Unlike many other cars, where the relay is a separate small cube, in Skoda Fabia In the second generation, the windshield wiper control function is often integrated into the main fuse box or is a separate module mounted on the steering column housing.
If you have version with interval mode operation of the wipers, the relay is responsible for temporary pauses between cycles. If there is a malfunction, the electronics can supply power to the motor directly, ignoring the settings operating modes. To find the element, you need to remove the plastic trim under the steering wheel, look behind the instrument panel and find the black plastic block with a connector.
It is important to consider that at different years of manufacture Skoda Fabia 2 (model range 2007โ2014) the diagram may differ slightly. In some configurations, the wiper relay is combined with the unit comfort (J393), which complicates diagnosis. In such cases, failure of one component can lead to problems with the central locking or interior lighting.
Typical symptoms of relay failure
Failure can be determined by specific behavior windshield wipers. The most obvious sign is that the wipers do not respond when the lever is switched to the โONโ position. In this case, you can hear the relay click, but the motor will remain without power. This indicates an open circuit within the control element itself.
Another common scenario is that the wipers only work in high speed, ignoring low speed or interval. This is due to the fact that the power circuit for the first mode has burned out or oxidized, but the winding of the second contact has retained its integrity. There is also a situation where the wipers work constantly, even after the ignition is turned off.
- ๐ The wipers do not return to their original position after being turned off (they do not โhangโ on the windshield).
- ๐ A constant hum of the motor is heard, but the brushes do not move or move jerkily.
- ๐ The washer or wiper malfunction indicator flashes on the dashboard.
Sometimes the problem lies not in the relay itself, but in contact group connector, which oxidizes due to moisture entering through the steering column seals. Visual inspection of the contacts may reveal black deposits or melted plastic, which requires immediate replacement of the connector.
โ ๏ธ Attention: If you notice that the wipers are working intermittently, do not try to โknockโ the unit with a hammer or shake it. This can lead to short circuiting of contacts and failure of the main comfort module, the repair of which will cost several times more than replacing the relay.
Diagnostics of the electrical circuit and search for the cause
Before you buy a new one control unit, other causes must be excluded. Check the fuse for the wipers. B Skoda Fabia 2 is usually a 15 or 25 Amp fuse located in the block on the left side of the dashboard.
For accurate diagnosis you will need a multimeter. You need to remove the connector from the relay and check for voltage at the power contacts with the ignition on. If there is voltage, but there is no voltage at the output to the motor when the mode is turned on, the relay is faulty. If there is no voltage at the input, the problem is in the wiring or fuse.
It's also worth checking for yourself wiper motor. Sometimes, due to jamming of the mechanism (for example, due to frozen ice), the internal protection of the relay is triggered and it turns off the power. If the motor does not rotate, try cranking it manually or applying power directly, bypassing the relay.
- Don't turn on at all
- Works only at high speed
- Work constantly
- The interval is not adjustable
The process of replacing and installing a new relay
Replacing the relay with Skoda Fabia 2 Requires accuracy and a minimum set of tools. You will need a Phillips screwdriver and possibly a plastic spatula to remove the decorative trim. It is better to carry out work with the battery disconnected to avoid short circuits.
First, remove the lower plastic steering column panel. It is secured with several screws and latches. After removing the panel you will see the fuse and relay box. The wiper relay is usually marked or located in a specific row that can be identified by scheme on the block cover.
Gently pull out the relay by pulling on the housing without pulling on the wires. Insert the new element until it clicks. Before installation, check that the contacts of the new relay match the old ones. In some cases, flashing or adaptation is required, but for a simple wiper relay this is usually not necessary.
โ๏ธ Preparing to replace the relay
โ ๏ธ Attention: Use only original spare parts or high-quality analogues from trusted brands. Cheap Chinese relays may have inappropriate pinouts, which will lead to burnt tracks in an expensive control unit Skoda Fabia.
Comparison table of common part codes
To select the correct spare part, it is important to know its catalog number. On Skoda Fabia 2 There may be various modifications of the relay depending on the year of manufacture and configuration. Below is a table with the most common items.
| Article number (OEM) | Description | Applicability | Features |
|---|---|---|---|
| 1J0 955 115 | Interval wiper relay | Skoda Fabia 2 (before 2010) | Basic option with interval |
| 6Q0 955 115 | Wiper control unit | Skoda Fabia 2 (after facelift) | Integrated module |
| 1K0 955 115 | Relay with washer function | Equipment with headlight washer | Washer pump control |
| 5K0 955 115 | Comfort module (including wipers) | High trim levels | Difficult diagnostics, requires a code |
Please note that numbers may vary depending on the region where the vehicle is delivered. Always check the markings on the body of the removed relay with the data in the catalog. An incorrectly selected device may not provide correct operation. pause modes.
What to do if the relay does not fit in the connector?
If the new relay connector is different from the old one, do not try to remake it or solder wires. This is a sign that you chose the wrong version. Contact the dealer or find an exact analogue by the VIN code of the car, as the patterning can differ even visually similar blocks.
Nuances of repair and extension of service life
Sometimes there is no need to change the entire knot. If the problem is oxidation of the contacts, you can try to clean them. Remove the relay and gently clean the contacts with small sandpaper or eraser. Also check the status. springs inside the body, which provides pressing contacts.
If the relay is made in a non-collectible case, opening it with a soldering iron is risky. There is a high probability of damage to the printed circuit board. In such cases, it is better to replace the entire device. However, if you see melted plastic, repair is not possible โ a complete replacement of the unit is required.
To extend service life electronics It is recommended to regularly check the tightness of the steering column seals. Moisture penetrating the panel is the main enemy of the relay. Apply special lubrication to the connector contacts before installation to prevent further oxidation.
Before installing a new relay, be sure to treat the contacts with dielectric lubrication. This will protect them from moisture and oxidation, extending the life of the element for several years.
Remember that regular maintenance of the wiper system includes not only replacement of brushes, but also inspection of the electrical part. Timely diagnosis will help to avoid unexpected breakdowns in rainy weather, when wipers are critical for safety.
The wiper relay on the Skoda Fabia 2 often fails due to moisture and contact oxidation, so preventive cleaning of the connector can delay the need to replace the unit.
Frequently asked questions and answers (FAQ)
Where exactly is the wiper relay on Fabia 2?
It is located behind the bottom panel of the steering column, often in or near the fuse block. To access, you need to unscrew the screws and remove the plastic lining.
Can you drive the janitors without a relay?
No, the relay is necessary for switching circuits of speed and interval control. Without it, the motor can only work with direct connection, which is impossible in the standard scheme.
Why do the janitors only work at high speed?
This is a classic sign of a relay breakage or a chain break on the contact responsible for low speed. It is also possible to damage the contact group of the motor itself.
Do I need to adapt the new relay through the computer?
For simple wiper relays, adaptation is not required. If the comfort module (J393) is used, it may be necessary to encode it through a diagnostic scanner.
Can I fix the relay myself?
In some cases, replacing internal contacts or relay timers helps, but it is often more reliable and cheaper to install a new original unit.
Remember that Proper operation of windshield wipers directly affects your safety when driving in bad weather. Ignoring relay problems can lead to serious road accidents. Regular check of electrician condition and use of quality spare parts - the guarantee of reliable work of your company Skoda Fabia 2.
If after replacing the relay the problem has not disappeared, it is worth contacting professional automotive electrical systems for a deep diagnosis of wiring and control units. Independent experiments with electricity without the necessary knowledge can lead to new, more serious breakdowns.