Cigarette lighter fuse in ŠKODA Superb: location, ratings and DIY replacement

Cigarette lighter in ŠKODA Superb - one of the most popular elements of a car's electrical system. The operation of not only smartphone chargers, but also video recorders, navigators, tire compressors and other gadgets depends on it. However, if there is an overload or short circuit cigarette lighter fuse may burn out, leaving you without the ability to use a 12V outlet. In this article we will look at where the fuse is located, how to check and replace it, and also talk about the nuances that will help avoid repeated breakdowns.

It is important to understand that in different generations Superb (B5, B6, B7, B8) fuse location and rating may vary. We'll look at each generation in detail, provide fuse box diagrams, and give practical diagnostic tips. If you are faced with the fact that the cigarette lighter does not work, but the backlight light is on, the problem is most likely in the fuse. If the backlight is also not active, the reasons may be more serious: from a broken wiring to a malfunction of the socket itself.

Where is the cigarette lighter fuse in a ŠKODA Superb?

Most models ŠKODA Superb The cigarette lighter fuse is located in main fuse box, which is located inside the car. The exact location depends on the generation:

• 🔧 Superb B5 (1996–2002) — fuse box under the steering wheel, to the left of the steering column. The cigarette lighter fuse is usually labeled as F35 or F41 (nominal 15–20A).
• 🔧 Superb B6 (2001–2008) — fuse box in the niche of the front panel on the driver's side. Looking for a fuse S29 (20A) or S30 (depending on the configuration).
• 🔧 Superb B7 (2008–2015) — fuse box under the cover to the left of the steering wheel. Cigarette lighter fuse - S42 (20A) or S43 (for an additional socket in the trunk).
• 🔧 Superb B8 (2015–present) - fuse box in the glove compartment or under the dashboard on the driver's side. The fuse is marked as SB25 (20A) or SB26 (for socket in the rear).

In some trim levels Superb (especially in restyled versions) can be installed two-fuse: one for the front cigarette lighter, the other for the socket in the trunk or on the central tunnel. If you have an additional 12V connector installed, check both fuses.

Fuse block diagrams by generation

To avoid guessing which fuse is responsible for the cigarette lighter, use the diagrams for your generation Superb. Below we provide current diagrams indicating the required fuses.

Generation	Block location	Fuse number	Denomination (A)	Notes
Superb B5	Under the steering wheel, on the left	F35 / F41	15–20	In some versions the fuse is combined with a socket in the trunk
Superb B6	Front panel niche (driver's side)	S29 / S30	20	S30 - for an additional socket (if available)
Superb B7	Under the cover to the left of the steering wheel	S42 / S43	20	S43 — for a socket in the trunk or rear armrest
Superb B8	Driver's side glove compartment or panel	SB25 / SB26	20	SB26 — for a 12V socket in the rear of the cabin

If you are unsure about the location of the fuse box, contact instruction manual your Superb. As a last resort, you can use a flashlight and visually inspect the space under the steering wheel or in the glove compartment - the fuse box usually has a plastic cover with a lightning icon or inscription FUSES.

⚠️ Attention: In some versions Superb B7 and B8 The cigarette lighter fuse can be combined with the fuse audio systems or on-board computer. If after replacing the fuse the radio stops working, check that the rating is set correctly.

How to check the cigarette lighter fuse

Before replacing the fuse, it must be checked. For this you will need multimeter or visual inspection. Follow the instructions:

1. Turn off the ignition and remove the key from the lock. This will prevent a short circuit during testing.
2. Remove the fuse box cover. It is usually secured with latches or a screw (in rare cases).
3. Find the right fuse according to the diagram (see table above) and remove it using plastic tweezers (usually comes with the block).
4. Check integrity:
   • 🔍 Visually: A blown fuse has a broken metal thread inside.
   • 📊 Multimeter: set the circuit continuity test mode (diode icon) and touch the fuse contacts with the probes. If the resistance tends to infinity, the fuse has blown.

If the fuse is intact, but the cigarette lighter does not work, the problem may lie in broken wiring, oxidation of contacts or malfunction of the socket itself. In this case, a more in-depth diagnosis will be required.

Turn off the ignition and remove the key|Locate the fuse box according to the diagram|Remove the fuse with tweezers (not your fingers!)|Check integrity visually or with a multimeter|Make sure that the new fuse has the same rating-->

Step-by-step instructions for replacing the fuse

If the fuse is blown, it must be replaced. It is important to use a fuse same denomination, which is the original one. Installing a fuse with a larger rating may result in fire in the wiring!

Sequence of actions:

1. Buy a new fuse rated 15A or 20A (depending on the model). Fuse type ATO or Mini (in Superb B8 more often used Mini).
2. Turn off the power — remove the key from the ignition and open the driver's door (this will discharge the capacitors in the electrical system).
3. Remove the blown fuse tweezers. Do not use metal tools - they may short-circuit the contacts.
4. Install a new fuse until it clicks. Make sure it fits snugly into the socket.
5. Check the operation of the cigarette lighter — connect the charger or voltage tester. If the fuse is blown again, look for short circuit in the chain.

⚠️ Attention: If the new fuse blows immediately after installation, do not try to install a fuse of a higher rating! This is a sign of a serious problem (for example, a short circuit in the cigarette lighter socket or damaged wiring). In this case, contact an auto electrician.

Typical mistakes when replacing a fuse

Even something as simple as replacing a fuse can be done incorrectly. Here are the most common mistakes owners make ŠKODA Superb:

• 🔥 Using "bugs" (homemade wire fuses). This may lead to wiring fire!
• 🔄 Installing a fuse of a different rating. For example, instead of 20A they put 25A or 30A, which can lead to overheating of the circuit.
• 🤏 Removing the fuse with your fingers. This may damage the contacts of the unit or leave grease marks that impair conductivity.
• 🔌 Ignoring checking the cigarette lighter socket. If the contacts in the socket are oxidized or deformed, the new fuse will quickly burn out.
• 📋 Poor polarity when checking with a multimeter (although the fuse is non-polarized, measurement error can be misleading).

If, after replacing the fuse, the cigarette lighter is unstable (for example, it turns off under load), check:

• 🔌 Quality of contacts in the socket - they could oxidize or straighten out.
• 🔋 On-board voltage (should be 12–14.4V). If the voltage is lower, the problem may be with the battery or alternator.
• 🔧 Wiring integrity from the fuse box to the cigarette lighter (checked with a multimeter in continuity mode).

What should I do if the fuse blows again?

If the new fuse blows immediately after installation, there is a short circuit in the circuit. Possible reasons:

1. **Short circuit in the cigarette lighter socket** (for example, due to metal objects getting in or contacts melting).

2. **Damage to the insulation of the wires** going to the cigarette lighter (often chafed at bends).

3. **Malfunction of the connected device** (for example, a charger with a damaged circuit).

4. **Problems in the fuse box** (oxidation of tracks or failure of the relay).

**Solution:** Disconnect all devices from the cigarette lighter, check the socket for foreign objects, test the wires with a multimeter. If the problem is not found, contact a car service for diagnostics.

How to extend the life of a cigarette lighter fuse

To avoid frequent fuse blowing, follow these tips:

• 🔌 Don't use cheap chargers of dubious quality. They often cause current surges.
• 🔋 Do not connect powerful devices to the cigarette lighter (for example, inverters 12V→220V over 150W) without an additional relay.
• 🧹 Clean the cigarette lighter socket regularly from dust and debris. Use compressed air or special contact cleaners.
• 🔄 Check the voltage in the on-board network 1–2 times a year. Voltage surges (eg due to a faulty alternator) can damage the fuse.
• 🔧 Install an additional relay, if you often use powerful consumers (for example, a refrigerator or compressor).

If you often connect several devices to the cigarette lighter at the same time (for example, DVR + phone charger + navigator), consider installing splitter with overload protection. Such devices have built-in fuses and prevent overheating of the circuit.

Frequently asked questions about the cigarette lighter fuse in the ŠKODA Superb

Is it possible to replace the cigarette lighter fuse with a higher rating (for example, from 20A to 25A)?

No, this is extremely dangerous! The fuse is rated for the maximum current that the wiring can handle. Installing a fuse with a higher rating will lead to overheating of the wires and the risk of fire. If a 20A fuse frequently blows, look for the cause (short circuit or overload) rather than increasing the rating.

Why does the cigarette lighter work after replacing the fuse, but after a while it stops working again?

This is a sign intermittent short circuit. Possible reasons:

• Poor contact in the cigarette lighter socket (oxidation or loosening).
• Damage to wire insulation, which manifests itself during vibration (for example, on bumps).
• Faulty connected device (for example, charging with damaged circuitry).

Check the socket visually, test the wires with a multimeter and try connecting another device.

Where can I find the fuse box in the ŠKODA Superb B8 if it is not in the glove compartment?

B Superb B8 The fuse box can be located in two places:

1. B glove compartment (remove the cover, the unit is located on the side).
2. Under driver's side panel (you need to snap off the plastic cover near the pedals).

The exact location depends on the year of manufacture and configuration. Focus on the lightning icon or inscription FUSES.

Is it possible to use a cigarette lighter to connect a 12V→220V inverter?

Technically possible, but with reservations:

• The maximum power of the inverter should not exceed 150–180W (otherwise the 20A fuse will burn out).
• It is better to connect the inverter directly to the battery through a separate fuse (for example, 30A) with a relay.
• Do not use the inverter with the engine off - this will quickly drain the battery.

For powerful inverters (300W and above), it is recommended to install an additional 12V socket with separate wiring and fuse.

How to check if the cigarette lighter socket is burnt out?

If the fuse is intact, but the cigarette lighter does not work, check the socket:

1. Turn off the ignition and remove the negative terminal from the battery.
2. Remove the cigarette lighter socket (usually secured with latches or a screw).
3. Use a multimeter to check the presence of voltage at the socket contacts (there should be 12V between the central and side contacts).
4. Inspect the contacts for melting or oxidation. If necessary, clean them with sandpaper.

If there is no voltage, the problem is in the wiring or fuse box.