Cigarette lighter fuse Skoda A7: where is it located, how to check and replace

Skoda Superb (internal designation 3T, known as A7 in the third generation) is a car that combines comfort and technology. But even in such a reliable car, minor malfunctions periodically arise, one of which is the failure of the cigarette lighter. In 90% of cases the problem lies in a burnt out fuse, and not in the socket or wiring itself. This article will help you figure out where the cigarette lighter fuse is located in Skoda A7, how to check it with a tester or “by eye”, and what to do if the replacement does not produce results.

We have collected up-to-date information for owners Skoda Superb 3T (2015–2023), including data on restyled versions. Here you will find exact fuse numbers, their location in the block, as well as tips on choosing a replacement and diagnosing more serious faults. Don't waste time guessing - follow the step-by-step instructions with photos and diagrams.

Where is the cigarette lighter fuse located? Skoda A7

B Skoda Superb 3T (A7) The cigarette lighter fuse is located in main fuse box, which is located inside the car - under the steering column, to the left of the brake pedal. This unit is closed with a plastic lid with a latch. You don't need a tool to open it: just pull the lid towards you with a little force.

The specific location of the fuse depends on the year of manufacture and equipment of the car, but in most cases it is:

• 🔧 Socket F36 (face value 20A) — for the cigarette lighter in the front panel.
• 🔌 Socket F42 (face value 15A) - for additional connector 12V in the trunk (if provided).
• ⚡ Socket F50 (face value 30A) - for socket 230V (in versions with inverter).

Please note: in restyled models Superb (from 2019) location may vary slightly. To avoid mistakes, always check with sticker on the inside of the fuse box cover — the current diagram for your car is indicated there.

How to tell if the cigarette lighter fuse is blown

The first sign of a malfunction is that the cigarette lighter stops working: the coil does not heat up, power is not supplied to the connected devices (for example, a DVR or a phone charger). However, similar symptoms may indicate other problems: broken wiring, oxidation of contacts, or a malfunction of the socket itself. How to accurately diagnose a blown fuse?

Here 3 ways to check:

1. Visual inspection. Remove the fuse and look at its metal jumper. If she torn or melted, the fuse must be replaced. In some cases, the gap is visible to the naked eye, but it is better to use a magnifying glass.
2. Checking with a tester (multimeter). Switch the device to the dialing mode (or resistance measurement). Touch the fuse contacts with the probes: if the resistance tends to infinity (OL on the screen), it means the circuit is broken.
3. Replacing with a known good one. Take a fuse with the same rating from another socket (for example, from the heated seats) and install it in place of the “suspect”. If the cigarette lighter works, the problem is confirmed.

Step-by-step instructions for replacing the fuse

Replacing the fuse in Skoda A7 takes no more than 5 minutes and does not require special skills. It is only important to follow the sequence of actions and use the correct fuse rating. Here are the detailed instructions:

Step 1. Turn off the power. Remove the key from the ignition and make sure that all electrical appliances (headlights, radio, air conditioning) are turned off. This will prevent a short circuit when removing the fuse.

Step 2. Remove the fuse box cover. It is located under the steering wheel, to the left of the brake pedal. Pull the cover towards you, overcoming the resistance of the latches. On the inside you will see a diagram indicating the sockets.

Step 3. Remove the faulty fuse. To do this use plastic tweezers, which is usually attached to the block cover. If you don’t have tweezers, you can carefully pry the fuse with a small screwdriver (but not a metal one, so as not to short the contacts!).

Step 4. Install a new fuse. It must match the value 20A (for the cigarette lighter in the front panel) and have the same color (red). Insert the fuse all the way so that the contacts fit snugly.

Step 5. Check functionality. Turn on the ignition and test the cigarette lighter by connecting a charger or other working equipment to it. If the problem persists, see section "Diagnosis of other faults".

Which fuse should I choose to replace?

For cigarette lighter in Skoda Superb A7 suitable fuse with rating 20A (red). However, there are several types of fuses on the market, and not all of them are equally reliable. Here's what to consider when choosing:

Fuse type	Denomination	Color	Application in Skoda A7	Recommendations
Mini (ATM)	20A	Red	Cigarette lighter, 12V socket	The best choice. Compact and reliable.
Standard (ATO)	20A	Yellow	Outdated format, not suitable for A7	Do not use! It may not fit into the nest.
Maxi	20A	Yellow	Main circuits (not for cigarette lighter)	Too large for socket F36.
Low-Profile Mini	20A	Red	Alternative to the standard Mini	Suitable, but less common in stores.

When purchasing, give preference to fuses from proven brands:

• 🔹 Bussmann — high quality, vibration resistance.
• 🔹 Littlefuse - original fuses for many cars.
• 🔹 Hella — optimal price/quality ratio.
• 🔹 Bosch - reliability, but there are fakes.

Avoid cheap "no-name" fuses - they often have poor contacts and can overheat.

How to spot a fake fuse?

Counterfeits usually have dull plastic color, jagged edges, and unclear denomination markings. With original fuses Littlefuse or Bussmann the logo and denomination are engraved rather than printed.

What to do if replacing the fuse does not help

If the cigarette lighter still does not work after replacing the fuse, the problem lies deeper. Here are the most likely causes and ways to eliminate them:

1. Oxidation or burning of socket contacts. Over time, the cigarette lighter contacts become coated, which impairs conductivity. Solution: Clean the contacts with alcohol or a special contact fluid (such as Kontakt 60). In severe cases, the entire socket may need to be replaced.
2. Open or short circuit in wiring. Check the wires going to the cigarette lighter for damage. To do this, you will need a multimeter in dialing mode. A break usually occurs in the terminal block under the dashboard.
3. Relay fault. In some trim levels Skoda A7 Cigarette lighter power goes through the relay J317 (in the main block). Check its functionality by replacing it with a known good one.
4. Weight problems. Poor contact with the "minus" can simulate a faulty fuse. Check the fastening of the ground wire to the body (usually under the dashboard, clutch pedal).

If you are not confident in your abilities, it is better to contact an auto electrician. For example, wiring diagnostics require experience and special equipment (e.g. oscilloscope to check signals).

⚠️ Attention! If the cigarette lighter fuse blows again immediately after replacement, this indicates short circuit in the chain. In this case, it is strictly forbidden to install a fuse with a large rating (for example, 25A or 30A) - this may lead to a fire in the wiring. It is urgent to find and eliminate the cause of the short circuit!

Diagnosis of other cigarette lighter faults

Sometimes the problem lies not in the fuse, but in the cigarette lighter socket itself or connected devices. Let's look at typical scenarios:

1. The cigarette lighter is not fixed in the socket. This occurs due to wear and tear on the spring mechanism. Solution: Replace the cigarette lighter socket (part number for Skoda A7 — 3T0 919 131 or 3T0 919 131 A for restyled models).

2. Devices are not charging, but the cigarette lighter is heating up. This may be due to voltage sag due to oxidized contacts or thin wires. Check the voltage at the socket with a multimeter: when the ignition is on, it should be at least 11.8V (optimally - 13.8–14.4V).

3. The fuse blows when connecting a specific device. This means that the device (such as a compressor or inverter) draws more current than 20A. Solution: use splitter with its own fuse or connect powerful devices directly to the battery via terminals.

4. The cigarette lighter sparks when connected. Sparking indicates poor contact or overload. Clean the socket of debris (dust, small metal particles) and check if the contacts are bent. If sparking continues, replace the socket.

Prevention: how to avoid recurring problems

To ensure that the cigarette lighter fuse is in Skoda A7 served longer, follow these recommendations:

• 🚗 Do not connect devices with a power consumption of more than 180W (for example, car refrigerators or powerful compressors). Use separate fused outlets for them.
• 🔌 Regularly (every 6 months) clean the cigarette lighter socket of dust and debris. A can of compressed air or a soft brush is suitable for this.
• ⚡ Avoid using cheap splitters ("tees"). They often cause short circuits due to poor contacts.
• 🔧 Check the voltage in the on-board network. If the alternator undercharges the battery, it can cause voltage sags and overload the fuses.

If you often use the cigarette lighter to connect gadgets, consider installing an additional outlet 12V with separate fuse. This will reduce the load on the standard chain and extend its service life.

⚠️ Attention! Never use the cigarette lighter to “light” another car! This may lead to instantaneous fuse blowing and even failure of the on-board computer. To jump start the engine, use only the battery terminals.

Frequently asked questions (FAQ)

Is it possible to replace the cigarette lighter fuse with a stronger one (for example, 25A instead of 20A)?

No, this is strictly prohibited! The fuse is rated for the maximum current that the wiring can handle. Installing a fuse with a large rating will lead to the risk of wire melting and even fire. If 20A not enough for your devices, use a power strip with its own fuse or connect devices directly to the battery via terminals.

Where to buy a fuse for the cigarette lighter Skoda A7?

Fuses Mini 20A sold in any auto store (for example, AutoDetail, existential), in markets or in online stores (Wildberries, Ozon, AliExpress). The cost of one fuse is from 10 to 50 rubles. We recommend buying packs of 5–10 pieces, as they often break down.

Why does the cigarette lighter fuse blow immediately after replacement?

This indicates short circuit in the chain. The reasons may be different:

• The insulation of the wires is damaged (for example, they rubbed against the body).
• Metal debris (coins, paper clips) got into the cigarette lighter socket.
• Faulty connected device (for example, a compressor with an internal short circuit).

To diagnose, disconnect all devices from the cigarette lighter and check the circuit with a multimeter in continuity mode. If the short circuit is confirmed, contact an auto electrician.

What is the part number for the cigarette lighter socket for Skoda Superb A7?

Original cigarette lighter socket for Skoda Superb 3T (A7) has the article number:

• 3T0 919 131 - for models before facelift (2015–2019).
• 3T0 919 131 A — for restyled versions (from 2019).

The cost of the original nest is about 1,500–2,000 rubles. Analogues (for example, from Hella or Valeo) will cost less (800–1,200 rubles), but may differ in the quality of the plastic.

Can I change the cigarette lighter socket myself, or do I need to go to a service center?

Replacing the cigarette lighter socket in Skoda A7 - a task of medium complexity. To do this you will need:

1. Remove the decorative trim around the cigarette lighter (usually it is secured with latches).
2. Disconnect the terminal block from the back of the socket.
3. Remove the old socket and install a new one, connecting the block back.

If you have experience working with automotive electrics, you can do it in 20–30 minutes. Otherwise, it is better to contact the service to avoid damage to the wiring.