Introduction: why the cigarette lighter does not work in Octavia A5?
If in your Škoda Octavia A5 2012, the cigarette lighter stopped working, the problem in 90% of cases is associated with a blown fuse. This is one of the most common electrical faults in cars of this model, especially if you actively use the socket to charge gadgets or connect additional devices. The fuse performs a protective function: in the event of a power surge or short circuit, it blows, preventing damage to the wiring or the cigarette lighter itself.
Owners Octavia A5 often encounter this problem after connecting powerful consumers (for example, car vacuum cleaners, compressors or inverters) that exceed the permissible load on the circuit. The fuse may also blow due to a faulty charger or mechanical damage to the socket. In this article we will look at where is the cigarette lighter fuse located, how to check and replace it, and also consider typical mistakes that car owners make during repairs.
Where is the cigarette lighter fuse located? Škoda Octavia A5 2012?
B Octavia A5 The cigarette lighter fuse is located in fuse box, which is located inside the car. Specifically, under the instrument panel on the driver's side. To access the block, you must:
- Open the driver's door and sit in the seat.
- Find the plastic cover under the steering wheel (to the left of the pedals) - it covers the mounting block.
- Carefully pry the cover with a screwdriver or flat object and remove it.
Inside the block you will see a diagram of the fuses. The fuse you are looking for is marked as F37 (in some modifications - F42) in nominal 20 Amps. Important: in Octavia A5 The cigarette lighter and 12V socket in the trunk can be protected different fuses. If only the front cigarette lighter is not working, check F37. If the problem is with the rear socket, look for F42.
- Yes, I changed it myself
- Yes, I went to the service center
- No, this is the first time
- I don't know where he is
There is usually a diagram with symbols on the cover of the mounting block. If it is missing or has been erased, use the table below:
| Designation | Denomination (A) | What is he responsible for? | Notes |
|---|---|---|---|
F37 |
20 | Cigarette lighter (front) | The most common "culprit" of the malfunction |
F42 |
20 | 12V socket in trunk | May not be available in basic configurations |
F50 |
10 | Cigarette lighter illumination | If the light does not light, but the cigarette lighter itself works |
F63 |
15 | Audio power supply circuit | Sometimes connected to the cigarette lighter via a common bus |
⚠️ Attention: Do not confuse the cigarette lighter fuse (F37) with fuseF36(15A), which is responsible for heated seats. Their location is nearby, but their functions are different. Replacing the wrong fuse may result in a short circuit!
How to check the cigarette lighter fuse: step-by-step instructions
Before replacing the fuse, it must be checked. For this you will need multimeter or a simple test light bulb. Follow the instructions:
Remove the fuse from its socket using tweezers (usually included with the block)
Turn the multimeter into continuity mode (diode or beep icon)
Touch the fuse contacts with the probes - if you hear a beep, the fuse is good
Visually inspect the fuse for broken wires inside (sometimes visible to the naked eye) -->
If the fuse is blown, it must be replaced with a new one same denomination (20A). Using a fuse with a smaller or larger rating may result in re-blowing or, worse, fire in the wiring. B Octavia A5 fuses are used mini blade (flat, with a plastic body). You can buy them at any auto store or gas station.
If after replacement the fuse blows again, this indicates short circuit in the circuit. In this case it is necessary:
- 🔍 Check the cigarette lighter socket for foreign objects (coins, paper clips).
- 🔌 Inspect the contacts for oxidation or burning.
- 📱 Check chargers and other connected gadgets - they may be faulty.
- 🚗 Contact an auto electrician to diagnose the wiring if the problem persists.
Typical mistakes when replacing a fuse in Octavia A5
Many owners Škoda Octavia A5 make mistakes that can aggravate the problem or lead to new problems. Here are the most common of them:
- Using "bugs" (homemade jumpers made of foil or wire). This is extremely dangerous: instead of a fuse that is rated for 20A, you connect a wire that can withstand hundreds of amperes. Consequences - Wiring melting or fire.
- Replacing with a fuse of a different rating. For example, setting 25A instead of 20A may cause the circuit to overheat.
- Ignoring the cause of burnout. If the new fuse blows immediately, you need to look for a short circuit rather than installing another one.
- Incorrect fuse removal. Do not use metal objects (knives, screwdrivers) - this may short-circuit the contacts in the unit.
Another common mistake is confusion between cigarette lighter fuses and other systems. For example, in Octavia A5 Nearby are the fuses for:
- 🔥 Heated seats (
F36, 15A) - 🎵 Audio systems (
F63, 15A) - 💡 Interior lighting (
F20, 10A)
⚠️ Attention: If after replacing the fuse the cigarette lighter still does not work, check relay J317 (comfort relay). It is responsible for powering several circuits, including the cigarette lighter. The relay is located in the same mounting block, but requires more complex diagnostics.
What to do if the fuse is intact but the cigarette lighter does not work?
If the fuse is good, but the cigarette lighter still does not function, the problem may lie in the following:
| Possible reason | How to check | Solution |
|---|---|---|
| Oxidation of socket contacts | Visual inspection, multimeter check | Cleaning contacts with alcohol or a special spray |
| Broken wire in the circuit | Continuity test with a multimeter from the fuse to the socket | Repair or replacement of wiring |
| Malfunction of the cigarette lighter itself | Check on another car or replace with a known good one | Replacing the cigarette lighter (part number for Octavia A5: 1Z0 919 201) |
| Weight problems | Checking the ground contact on the body (usually under the dashboard) | Cleaning and tightening the fastening |
Particular attention should be paid cigarette lighter socket. B Octavia A5 it often becomes loose or burns due to poor-quality chargers. If during a visual inspection you see:
- 🔥 Blackened or melted contacts - the socket must be replaced.
- 🔌 Loose or loose center pin - repair or replacement required.
- 💧 Signs of corrosion - clean the contacts and treat with a protective spray (e.g. WD-40).
If the cigarette lighter works "every time", try slightly squeezing the side contacts of the socket with pliers. This often temporarily solves the problem of poor contact.
How to extend the life of the cigarette lighter fuse?
To avoid frequent fuse blowing, follow these guidelines:
- Do not connect powerful consumers (more than 180 W) directly to the cigarette lighter. For compressors, vacuum cleaners or inverters, use splitter with fuse or connect directly to the battery via terminals.
- Use quality chargers. Cheap Chinese adapters often cause voltage surges.
- Clean the nest regularly from dust and debris. Dirt trapped inside may cause a short circuit.
- Do not leave devices in the cigarette lighter for a long time (for example, overnight). This may result in battery drain or overheating.
If you frequently use a cigarette lighter to connect multiple devices, consider installing additional 12V socket with separate fuse. B Octavia A5 Suitable for this:
- 🔌 Hella 8WA 007 548-031 (universal socket with fuse)
- 🔌 VAG 1K0 919 201 A (original part, suitable for trunk)
- 🔌 Bosch 1 987 302 004 (kit with wiring and fuse)
Using a fused splitter reduces the load on the standard cigarette lighter circuit and protects the wiring from overheating.
Where to buy a fuse for Škoda Octavia A5?
Fuse type mini blade 20A can be purchased at the following places:
| Place of purchase | Cost (RUB) | Benefits | Disadvantages |
|---|---|---|---|
| Auto stores (AutoDetail, existential) | 50–150 | Wide range, original parts | The price is higher than on the Internet |
| Online marketplaces (Wildberries, Ozon) | 30–100 | Low price, home delivery | Risk of running into a fake |
| gas station (Lukoil, Gazpromneft) | 100–200 | Can be bought on the road, quickly | Limited selection, high price |
| Service centers Škoda | 200–300 | Original quality guarantee | Expensive, long (need to order) |
When purchasing, pay attention to:
- 🏷️ Denomination - must be strictly 20A (the number “20” is indicated on the fuse body).
- 🔍 Workmanship - original fuses VAG have clear markings and smooth contacts.
- 📦 Packaging — in branded sets, fuses are packed in blisters with the manufacturer’s logo.
If you buy fuses in reserve, take a set with different ratings (5A, 10A, 15A, 20A, 25A). This will be useful for other vehicle circuits.
How to distinguish an original fuse from a fake?
Original fuses VAG or Bussmann have:
1. Clear engraving of the denomination (not erased by friction).
2. Smooth and shiny contacts without burrs.
3. Plastic body without seams or sagging.
4. Manufacturer's logo on one side.
Counterfeits often have dull metal, jagged edges, and blurry markings.
FAQ: Frequently asked questions about the cigarette lighter fuse in Octavia A5
Is it possible to put a 25A fuse instead of 20A?
No, it's dangerous! The 20A fuse is designed for the maximum load of the cigarette lighter circuit. Installing a fuse with a larger rating may result in overheating of wiring and even fire. If the 20A frequently burns out, look for the cause (short circuit or overload) rather than increase the rating.
Why does the fuse burn out immediately after replacement?
This indicates short circuit in the chain. Possible reasons:
- Damaged cigarette lighter socket (contacts shorted).
- Faulty charger or other connected device.
- Problems with wiring (frayed or exposed wires).
In this case, you need to disconnect all consumers and check the circuit with a multimeter.
Where is the cigarette lighter relay located?
B Octavia A5 responsible for the cigarette lighter comfort relay J317. It is located in the same mounting block under the instrument panel. The relay is marked 12V 30A/40A and is usually black or dark gray in color. To check the relay, you can swap it with a known good one (for example, with a heated glass relay).
Is it possible to drive without a cigarette lighter fuse?
Technically yes, but this extremely dangerous. Without a fuse, the cigarette lighter circuit remains unprotected. A short circuit can burn out the wiring, melt the socket, or even cause a fire. If the fuse frequently blows, it is better not to use the cigarette lighter temporarily until the cause is eliminated.
Which fuse is responsible for the USB ports in Octavia A5?
B Octavia A5 USB ports (if they are standard) are usually connected to fuse F63 (15A), which is also responsible for the audio system. However, in some modifications, USB can be powered from F37 (cigarette lighter) through a common bus. If the USB stops working, check both fuses.