Owners ŠKODA Octavia Tour fourth generation (body code NX4) are often faced with the need to check or replace fuses - be it a blown light bulb in the headlights, a non-working cigarette lighter, or the audio system suddenly turning off. Unlike previous generations, in Octavia Tour 2020–2026 fuse blocks are distributed over several zones, and their diagrams depend on the configuration and delivery market (for example, European and Russian versions may differ).

In this article you will find current fuse and relay diagrams for Octavia Tour with petrol (1.0 TSI, 1.5 TSI, 2.0 TSI) and diesel (2.0 TDI) engines, including hybrid modifications (iV). We will analyze in detail: where are the mounting blocks located?how to open them without damage, decoding of each fuse indicating the current strength, as well as unique pitfalls - for example, why in some configurations the cigarette lighter fuse can be duplicated in two blocks at the same time.

Where are the fuse boxes in the ŠKODA Octavia Tour (NX4)

B Octavia Tour 4th generation fuses and relays distributed across three main blocks: interior mounting block (to the left of the steering wheel), block under the hood (near the battery) and additional unit in the trunk (only for versions with hybrid installation iV). The placement may vary slightly depending on the year and market, but the general logic remains the same.

To get to the cabin unit, follow these steps:

  • 🔧 Open the driver's door and sit in the seat.
  • 🔍 On the left instrument panel (under the steering wheel) find a plastic cover with the inscription FUSES or fuse pictogram.
  • 🖐️ Press the latch at the bottom of the cover and pull it towards you. The cover will be removed along with the fastening.
  • 📄 Under the cover you will see a diagram with the designation of fuses (but it is often too general - see the detailed explanation below).

The unit under the hood is located in a plastic box next to the battery. To access:

  1. Open the hood and secure it with the stop.
  2. Remove the battery protective cover (if equipped).
  3. Find the black plastic box with the inscription FUSES/RELAYS — it is secured with two latches.
  4. Release the latches and lift the cover up.
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If you cannot remove the hood block cover, check to see if the hood cable is in the way. In some configurations it runs too close to the latches - carefully move it to the side.

Interior block fuse diagram (2020–2026)

Cabin mounting block Octavia Tour contains fuses responsible for interior lighting, multimedia, climate control and power windows. Below is the current diagram for most configurations (including Ambition, Style and Sportline). Please note: fuse numbers may differ for versions with digital dashboard Virtual Cockpit!

Number Current (A) Purpose Notes
F1 10 Airbag control unit (Airbag) When replacing be sure to disconnect the battery for 10 minutes!
F5 15 Cigarette lighter (12V socket) Available with Wireless Charging duplicated by fuse F37 in the block under the hood
F12 20 Audio system (Amundsen/Columbus) Also responsible for USB-ports in the central tunnel
F18 10 Rain and light sensor (Light Assist) If it burns out, the automatic switching on of headlights and windshield wipers may not work.
F25 30 Heated front seats In hybrid versions iV the current strength can be 40A

A complete diagram of the interior unit (including relays) for your configuration can be downloaded from the official website ŠKODA by link (select model Octavia, year of manufacture and engine). Please note: in the manuals for the Russian market the fuse F32 (responsible for Parktronic) is often missing - it was added only in 2023.

Why is there no fuse for the headlights in the cabin unit?

In the 4th generation Octavia Tour, the fuses for low/high beams, as well as dimensions, are located in a block under the hood (numbers F1–F4). This is done to simplify access during repairs - there is no need to disassemble the interior to replace a burnt-out element.

Fuse box under the hood: decoding and nuances

Engine compartment mounting block Octavia Tour contains fuses and relays responsible for power electrics: starter, generator, injection system, lighting and fans. Here are located maxi fuses (from 80A up to 150A), which rarely fail, but are required to be checked in case of serious electrical faults (for example, a short circuit in the generator circuit).

Features of the engine compartment:

  • ⚡ fuse F3 (100A) is responsible for main relay - if it burns out, the car will not start.
  • 🔋 Fuses F10–F12 (30A–50A) protect the chains ABS/ESC. Replacing them requires resetting the errors using a diagnostic scanner.
  • 💡 fuse F20 (15A) controls fog lights — in European versions it may be absent (there PTFs go through a relay).
  • 🔌 fuse F25 (80A) protects the chain heated windshield — if it burns out, check the contacts on the glass (a common problem in winter).

To replace fuses in the engine compartment, use plastic tweezers, which comes with the car (usually lies in the glove compartment or under the block cover). Never use metal tools - this may cause a short circuit!

📊 How often do you check the fuses in your Octavia?
  • Only when something breaks
  • Once a year for prevention
  • Never checked
  • I change it myself if necessary

Relays in ŠKODA Octavia Tour: where they are and how to check

Relay in Octavia Tour are responsible for switching powerful consumers: starter, radiator fans, fuel pump, heated windows etc. Unlike fuses, relays rarely fail, but they should be checked if the following symptoms occur:

  • 🚗 The car does not start, but the starter does not turn (the problem is in the relay K1).
  • 🌬️ Cooling fans do not turn on when overheated (relay K7 or K8).
  • ⛽ The engine stalls while driving (the relay may not be working fuel pump K3).
  • 🔥 Rear window heating does not work (relay K12).

B Octavia Tour relays are located:

  • B salon block (relay K1–K6 - for example, starter relay and ignition relay).
  • B engine compartment (relay K7–K15 - fans, fuel pump, ABS).
  • B additional unit under the glove compartment (only for versions with Matrix LED - relay K16–K18 control adaptive light).

To test the relay, follow these steps:

Remove the relay from its socket (pull gently upward)|

Inspect the contacts for oxidation or burning|

Test the relay coil with a multimeter (resistance should be 50–120 ohms)|

Apply 12V voltage to pins 85 and 86 - you should hear a click|

If the relay does not operate, replace it with a known good one (for example, with the same rating from another socket) -->

Please note: in Octavia Tour with hybrid installation iV relay added K19, which is responsible for high voltage battery. Its replacement should only be carried out at a service center!

Common problems with fuses and how to avoid them

Owners ŠKODA Octavia Tour often encounter typical faults related to fuses. Here are the most common ones and how to prevent them:

1. Cigarette lighter fuse blown (F5 or F37)

Cause: use of powerful devices (for example, compressors or inverters) or a short circuit in the connector. Solution:

  • 🔌 Check 12V- the socket for the presence of foreign objects or oxidation.
  • 📊 Use a fuse rated 20A (even if the manual states 15A) - this is acceptable for most configurations.
  • ⚡ If the fuse blows repeatedly, check the wiring with a multimeter for a short circuit.

2. Fuse F12 (audio system) fails after connecting phone

Reason: malfunction USB-port or short circuit in the cable. Solution:

  • 📱 Try a different cable (preferably the original one) Apple or USB-IF certified).
  • 🔍 Inspect the connector for bent pins.
  • 🔄 Reset your multimedia system via Settings → System → Reset.

3. Fuse F25 (heated seats) burns out in winter

Reason: wear of the heating elements or damage to the thermostat. Solution:

  • 🪑 Check the resistance of the heating elements (should be 1-3 ohms).
  • 🔥 If the fuse blows immediately after replacement, turn off the heating and contact service - there may be a current leak to the housing.

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If a fuse in your Octavia Tour blows again after replacement, never install a fuse of a higher rating! This may cause the wiring to catch fire. Instead, look for the cause of the short using a multimeter or diagnostic scanner.

How to properly replace a fuse: step-by-step instructions

Replacing the fuse in ŠKODA Octavia Tour - a simple procedure, but requiring accuracy. Here is a step-by-step algorithm:

Step 1. Preparation

  • 🔌 Turn off the ignition and remove the key from the lock.
  • 🔋 For fuses related to Airbag or ABS, disconnect the negative terminal of the battery for 10 minutes.
  • 📋 Prepare a new fuse same denomination (color and current are indicated on the case).

Step 2: Removing the old fuse

  • 🖐️ Take the plastic tweezers from the kit (usually located in the glove compartment or under the unit cover).
  • 🔍 Locate the faulty fuse using the diagram (see sections above).
  • 📍 Gently grasp the fuse with tweezers and pull it up. Don't try too hard!

Step 3: Install a new fuse

  • 🆕 Insert the new fuse into the socket all the way (it should fit tightly, without play).
  • 🔄 Make sure the fuse contacts are clean (wipe them with alcohol if necessary).
  • 🔌 Connect the battery (if disconnected) and check the operation of the circuit.

If after replacement the fuse blows again, do not repeat the procedure - this indicates a short circuit. In this case:

⚠️ Attention! Repeated fuse blowing may indicate damage to the wiring or a consumer failure (for example, a window lift motor or washer pump). Use a multimeter in test mode to find the short circuit, or contact service.

Additional fuse block in hybrid versions (iV)

Versions ŠKODA Octavia Tour iV (hybrid modifications with engines 1.4 TSI + electric motor) have third fuse block, located in the trunk on the left (under the trim). This block is responsible for:

  • 🔋 High voltage battery (200V–400V).
  • ⚡ Inverter and charger.
  • 🔌 Energy recovery system.

Features of working with this block:

  • 🛑 Never open the unit with the ignition on — high-voltage circuits remain energized even after the engine is turned off!
  • 🔧 To gain access, remove the plastic trunk lid (it is secured with 4 clips).
  • 📋 The fuses here have non-standard ratings: from 100A to 400A (marked in orange or red).

Hybrid versions also add two new relays:

  • K19 - high-voltage battery relay.
  • K20 - charger relay.

To diagnose a high-voltage system, specialized equipment is required (for example, a scanner VCDS with support for hybrid models). Do-it-yourself repairs are not recommended - Errors may void the warranty or damage the battery.

FAQ: Frequently asked questions about fuses in the ŠKODA Octavia Tour

🔍 Where can I find a fuse diagram for my configuration?

Official diagrams for your version Octavia Tour can be downloaded from the site ŠKODA (select model, year and engine). An alternative option is to use the app ŠKODA Connect (section "Documentation"). If there is no diagram, contact your dealer indicating VIN numbers — they will provide the current version.

⚡ Is it possible to replace the fuse with a higher rating?

No! Installing a fuse with a higher amperage (for example, 20A instead of 15A) can lead to overheating of wiring and even fire. If a fuse constantly blows, look for the cause (short circuit or faulty consumer) rather than increasing its rating.

🔧 How to check a fuse without a multimeter?

Visually inspect the fuse against a light: if the metal thread inside is torn or melted, the fuse is faulty. You can also replace a suspicious fuse with a known good one with the same rating (for example, take it from a circuit that is rarely used, such as heated mirrors in the summer).

🚗 Why does it blow again after replacing the cigarette lighter fuse?

The most common reasons:

  • Use of uncertified devices (for example, cheap compressors or inverters).
  • Short circuit in the connector 12V (check contacts for oxidation).
  • Damage to the wiring from the cigarette lighter to the mounting block (often frays under the dashboard).

Solution: disconnect all devices, replace the fuse and connect consumers one by one to identify the culprit.

🔋 Do I need to clear errors after replacing the ABS fuse?

Yes. If the circuit fuse ABS/ESC (F10–F12 in the engine compartment) has been replaced, the malfunction indicator may light up on the dashboard. To reset it:

  1. Start the engine and let it run for 1-2 minutes.
  2. Turn off the ignition and turn it on again.
  3. If the light does not go out, use a diagnostic scanner (for example, VCDS or OBDeleven) to reset errors.