Car owners Skoda Superb The second generation often faces an unpleasant situation when the luggage compartment suddenly stops opening. This is a problem that can occur when you press a button on the key, or when you try to open the mechanism from the inside or outside. In most cases, the cause lies in the electrician or mechanical elements of the lock, but sometimes the culprit is a software failure.
Ignoring such a malfunction is fraught with the fact that you simply will not be able to get to the spare, tools or things left in the cabin. Diagnosis begins with checking for simple things, such as the battery charge of a key fob or the integrity of fuses. If the visual inspection does not give results, a deeper intervention in the system will be required. Convenience Or the skinning of the trunk lid.
It is important to understand that lock-in On the Superb II model, it is often associated with the design features of the hatch and the location of the actuators. Unlike the simpler models, a complex system with a central lock and separate actuators for the lid is used here. Below we will discuss the main scenarios of breakdown and ways to eliminate them on their own, without contacting the service.
The main reasons for blocking the luggage compartment
The most common reason why the trunk is not opened Skoda SuperbThis is the discharge of the car battery or the key itself. The electromechanical drive of the lock requires sufficient voltage to actuate. If the car battery is discharged, even if there is a signal from the remote, the mechanism simply will not receive a command to unlock.
The second most common reason is the failure of the microswitch in the lock itself. Over time, the contacts become oxidized or erased, and the button on the lid stops sending a signal. In this case, you may hear the characteristic click of an opening attempt, but the mechanism will remain locked. It is also worth checking the condition. cockpitOne that could have rubbed or jumped off the lever.
Often the problem lies in damage to the wiring in the corrugated between the body and the trunk lid. With the constant opening and closing of the hatch, the wires inside the rubber tube are broken. This causes the power chain or signal line to break. Examine the wire harness visually, paying attention to the bending places where the insulation may be broken.
Sometimes the culprit is a failure in the software of the comfort control unit. The system can “hang” and stop responding to commands. In such situations, a complete reboot of the car's electronics helps by turning off the battery terminal for a few minutes.
Diagnostics of electrical wiring and lock
For accurate diagnosis, it is necessary to remove the decorative skin of the trunk lid. This will allow access to the lock mechanism and check the integrity of the wiring. Take a close look at the connectors connected to lock actuator. Oxidation of contacts often leads to high resistance, which is why the drive cannot overcome the force of the spring.
If the wiring is intact, it is worth checking the drive itself with a multimeter. Connect the probes to the drive contacts and ask the assistant to press the opening button. You should see the power surge. If there is no voltage, the problem is in the wiring or control unit. If there is a voltage, but the drive does not work, the mechanism has failed and requires replacement.
Pay attention to the condition of the lock fixator (dog). Sometimes it gets dirt, snow or a foreign object that physically blocks the turn of the mechanism. In this case, cleaning and lubrication of the unit with silicone lubrication or WD-40 will help. However, do not overdo the liquids to avoid damaging the electronic components.
An important step is to check the fuse responsible for the central lock. Depending on the configuration Skoda SuperbIt could be a safety lock numbered. 14 or 25 in a block in the cabin. Its burnout will completely de-energize the lock control system.
Mechanical forced opening
If the electrical method does not help, and you urgently need to get to the contents of the trunk, you will have to resort to a mechanical method. To do this, you will need to remove the skin of the trunk lid. The interior panel is mounted on clips and screws, which are often hidden under decorative stubs. Carefully tuck the panel with a screwdriver and remove it.
After removing the skin, you will see the lock mechanism from the inside. It has a special lever or cable designed for emergency opening. It is usually a red or orange tongue that needs to be pulled or turned. This action simulates the press of a button and unlocks the bolt.
If the lever is not available or the cable is severed, you can try to open the lock through the slot. This will require a thin screwdriver or a screwdriver-key. Insert the tool into the gap between the lock and the body and try to mechanically squeeze the lock. This requires care so as not to damage the paintwork of the car.
⚠️ Attention: When mechanically opening through a slot, there is a high risk of damaging the paint coating of the trunk lid. Be extremely careful and use soft pads on the tool.
After the successful opening of the trunk, do not rush to collect everything back. Remove the cause of the failure, otherwise the situation will repeat. If the problem was in the wiring, replace the damaged areas and lay new wires in the new corrugated.
- The button on the key does not work
- The button on the lid is not working.
- The mechanism gets stuck
- The drive is broken
Replacement and repair of the lock drive
If the diagnosis showed that the lock drive is defective, it must be replaced. Nana Skoda Superb The second generation is a fairly common procedure. The new drive can be bought separately without changing the entire lock in the assembly, which is much cheaper. Make sure you buy a part with the right code that fits your package.
The replacement process begins with the removal of the skin and disconnection of the power connector from the old drive. Next, you need to unscrew the bolts of the mechanism attachment to the metal of the cover. Be careful as bolts can be hidden under plastic plugs. After unscrewing, carefully remove the old knot.
Installation of the new drive takes place in reverse order. Before tightening the bolts, check the mechanism by connecting it to the connector and pressing the button. If everything works normally, you can fix the mechanism and collect the skin. Don’t forget to check the central lock from all sides.
☑️ Preparing to replace the drive
In some cases, it is not a complete replacement, but a repair of the drive. Inside the mechanism there are plastic gears that wear off over time. They can be replaced with metal counterparts or simply lubricated. However, this is a temporary solution, and it is better to install a new node immediately.
What if there is no access to the trunk at all?
If you can’t remove the skin because the trunk is closed, you can try opening access through the back seat. In some configurations there is a hatch in the back, which allows you to climb inside and get to the mechanism from the inside.
Software glitches and adaptation
Sometimes the problem is purely programmatic. The control unit may lose synchronization with the lock drive. Adaptation procedures must be carried out to eliminate the failure. This can be done with a diagnostic scanner, such as a VCDS or VAG-COM. Connect the device to the OBDII connector and go to the comfort control unit.
In the adaptation menu, find the item responsible for the central lock or trunk. Try to perform the “Basic settings” procedure. The system will restart the drive parameters and can restore its functionality. If this does not help, you will need a complete reflashing of the control unit.
It is also worth checking the settings in the car menu. Sometimes, the individual lock function or the “child lock” mode for the trunk can be activated accidentally. Check the settings in the multimedia system by going to the section "Car Control" or "Central Castle".
| Symptom | Probable Cause | Difficulty of repair | Recommended Action |
|---|---|---|---|
| The button on the key doesn't work | Low battery | Low | Replace battery |
| No reaction to the button on the lid | Fuse burned out | Low | Replace fuse |
| A click is heard, but it doesn't open. | Mechanical breakdown of the drive | Average | Replacing the lock drive |
| The trunk opens with jerks | Wiring damage | Average | Wire harness repair |
| It doesn't work from the key or the button. | Control unit failure | High | Diagnostics with a scanner |
If you are not confident in your abilities or do not have diagnostic equipment, it is better to contact specialists. Incorrect actions can lead to more serious breakdowns of the car’s electronics.
Regular lubrication of the lock mechanism and checking the condition of the wiring in the corrugated will help prevent sudden locking of the trunk on the road.
Prevention and care of the mechanism
To avoid problems with opening the trunk in the future, it is necessary to carry out regular preventive work. Clean the castle of dirt and dust, especially after the winter. Use special silicone lubricants to lubricate the moving parts of the mechanism and rubber seals.
Check the condition of the cables and levers inside the trunk lid. If you notice signs of wear or corrosion, replace parts with new ones. Do not allow moisture to enter the lock mechanism, as this leads to oxidation of the contacts and short circuits.
It is also recommended to check the battery charge of the car and the key. A discharged battery often causes failures in the operation of electronic locks. If you plan to store the car for a long time, turn off the battery or use a charger to maintain the charge.
⚠️ Attention: The use of inappropriate lubricants (e.g. graphite lubricant) may result in the mechanism sticking and its subsequent failure.
Watch the integrity of rubber corrugated at the connection point of the body and the cover. If you find cracks or tears, replace it immediately. This will prevent moisture and dirt from entering the wire harness, which is a common cause of contact breaks.
Before winter, be sure to treat the mechanism of the trunk lock with silicone lubrication and check the operation of the emergency opening cable.
When to contact the service
Despite the fact that many problems can be solved on their own, there are cases when you can not do without the help of professionals. If the problem lies in the control unit, its flashing requires special equipment and software. It is also difficult to replace the lock in the assembly, if it is integrated into the design of the cover.
If after all the repair attempts the trunk continues to not open, it is possible that the problem is deeper and concerns the wiring of the entire car. In this case, a complete diagnosis of the electrical circuit with the help of professional equipment is necessary. Self-searching can take a long time and not bring results.
It is worth contacting the service even if you are not sure about your skills. Errors when disassembling the skin or connecting the wiring can lead to new malfunctions. Professional craftsmen will quickly identify the cause and eliminate it with a guarantee of quality.
How much does it cost to repair the trunk?
The cost of repair depends on the cause of the breakdown. Replace the fuse or battery - free or a penny. Replacement of the lock drive will cost 2000-4000 rubles with work. Reflashing the control unit can cost from 3000 rubles.
What if the trunk does not open and the battery key does not help?
If battery discharge is not the reason, try opening the trunk through the back seat (if there is a hatch) or gently opening the cover skin and using the emergency opening lever manually.
Why does the trunk open but not close?
Most often the problem is in the lock microswitch or in the latch mechanism itself. It is also possible to damage the drive cable or failure in the central lock system.
Can I open the trunk from the key fob if the battery is sitting in the car?
No, if the car's battery is completely discharged, the electric drive won't work. In this case, only mechanical opening through the inner panel or removal of the skin will help.
How often should the trunk lock be lubricated?
It is recommended to lubricate the mechanism once a year, preferably before the onset of the winter season. Use only special silicone lubricants that do not contain oil.