Many owners Škoda Octavia A7 They are faced with an unexpected and frightening message on the dashboard: “Braking function in maneuvering is not available now.” This warning appears when City Safety’s automatic braking system or parking assistant refuses to operate normally. The situation is worrying, as it is about safety when reversing and at low speeds, where the risk of collision with pedestrians or obstacles is maximum.
The failure can be caused by a software failure of the electronic control unit, and physical damage to the sensors. Sometimes the problem occurs after a slight vibration or dirt hits the sensors. It is important to understand that the message "Breaking function during maneuvering is not available now" does not always mean a serious breakdown, but it is absolutely impossible to ignore it, as it is a signal about the loss of a critical level of protection of the car.
Principle of operation of the system and reasons for failure
Parking Assistant and Automatic Braking System Škoda Octavia A7 It is based on the complex interaction of ultrasonic sensors and the rear-view camera. When you move the gearbox selector to the R (reverse) position, the scanners begin to actively read the space around the bumper. If an obstacle is detected, the system gives an audible signal, and at a critical approach - automatically brakes.
The reasons for the error "Breaking function during maneuvering is now unavailable" often lie in the disruption of one of the nodes. Ultrasonic sensors They can become contaminated with snow, dirt or frost, which causes them to stop reflecting the signal correctly. The problem may also be in parking control unitwhich, due to a power surge, went into emergency mode. Often, the cause is a discharged battery, as the system requires a stable voltage to initialize all sensors.
Sometimes a failure occurs due to software incompatibility after updating the multimedia system. In rare cases, the wiring leading to the sensors is damaged, especially if the car has an abnormal tuning or the bumper has been dismantled. Lost calibration It is also a common problem when, after replacing the windshield or bumper, the system does not know the exact position of the sensors relative to the obstacles.
⚠️ Note: If the error only occurs when the air conditioner or heaters are on, this may indicate a voltage drop in the onboard network. In this case, the system disables the energy-consuming security functions.
Primary diagnosis and visual examination
Before you go to the service, you need to conduct an independent diagnosis. Start by inspecting the bumper thoroughly. Make sure that on the surface ultrasonic No ice, dirt, snow or stickers. Even a small patch of dirt on one of the sensors can cause an error throughout the system, as the controller considers the signal from it to be incorrect.
Check the integrity of the wiring. Inspect areas under the bumper where wires may be rubbed or damaged by rodents. If you have recently changed the bumper, it is possible that the connector was not fully inserted or the contacts have oxidized. Try to gently press each sensor – it should sit tightly, without backlash, but also not be pressed inside.
If the visual inspection did not give results, restart the electronic system of the car. To do this, open the hood and turn off the negative battery terminal for 10-15 minutes. This will reset temporary errors in the memory of the control units. After connecting the terminal, start the engine and wait a few minutes until all systems are initialized.
☑️ Checklist of rapid diagnosis
Sometimes the problem is solved by simply reconnecting. If the error "Breaking function is not available at the moment" disappeared, but returned after an hour, then the problem is periodic. In this case, you need to contact specialists for deep diagnosis using a scanner.
Software glitches and updates
Electronics Škoda Octavia A7 Very sensitive to software versions. There are cases when an error appeared due to a bug in the firmware of the parking control unit. Manufacturers regularly release updates that fix false positives and improve the algorithms of assistants.
To check the relevance of the software, go to the car menu through the multimedia system. Go to section. Settings → System → Software version. If the version is outdated, you will be asked to update the system. The update can be done via the Internet (if the car is connected to the network) or via a USB drive from the official website.
It is important to follow all instructions when updating. Do not turn off the engine or remove the flash drive until the process is complete. If the update is interrupted, the control unit may become “locked”, and then flashing will be required at the dealer’s equipment. This is a complex procedure that may void your warranty if you do it yourself.
What are the dangers of updating software yourself?
If you interrupt the firmware process of the parking control unit, it may turn into a “brick”. In this case, the machine will lose the ability to start, since many systems are interconnected via the CAN bus. Recovery is possible only on specialized VAS-PC or ODIS equipment.
In some cases, resetting the settings to factory settings helps. This will return the default settings for all assistants. However, remember that this will also reset your personal settings: radio stations, climate control, seats. Back up your important data before resetting.
Diagnostics using a VAG-COM scanner
If simple methods do not help, you need to connect a diagnostic scanner. For VAG group vehicles, which include Škoda Octavia A7, VAG-COM (VCDS) software is ideal. It allows you to read not only error codes, but also see sensor values in real time.
After connecting the adapter to the OBD-II connector, go to block 08 (Automatic brightness control) or block 76 (Parking). Look for error codes starting with 00000 or 01234. Often you will see the message “Ultrasonic Parking Sensor: Open Circuit” or “No Signal Received.” This will definitely point to the problem node.
Using the scanner you can also view “live” data. For example, display the value that each sensor transmits. If one of the sensors shows “-1” or “0” when there is an obstacle, it means it is faulty or disabled. This will save time and money since you won't have to replace all the sensors in a row.
| Error code | Description of the problem | Probable Cause | Recommended Action |
|---|---|---|---|
| 00000 | No signal from the sensor | Broken wiring or sensor failure | Check the circuit, replace the sensor |
| 01234 | The signal is not normal | Sensor contamination or interference | Clean sensor, check shielding |
| 01555 | Calibration error | Replacing a bumper without tuning | Carry out calibration on the stand |
| 02000 | Low voltage | Low battery | Charge or replace battery |
- Yes, and she passed on her own
- Yes, I did it myself
- Yes, I went to the service
- No, I haven't encountered it
Sensor replacement and calibration
If diagnostics show that the sensor is faulty, it must be replaced. B Škoda Octavia A7 Parking sensors are usually inserted into special holes in the bumper. To replace, you will need to carefully squeeze out the old sensor from the inside and insert a new one. It is important to choose an original part or a high-quality analogue, since cheap Chinese sensors are often unstable.
After replacing a sensor, a full system calibration is not always required, but this depends on the software version. In some cases, simply clearing the error codes and driving a few meters is enough. If the error is returned, it means that the system requires adaptation. To do this, you need to use special equipment that carries out the training procedure.
Calibration is the process by which the system remembers the “clean” area around the vehicle. The procedure involves installing a calibration target and scanning it with sensors. This allows the system to understand where the bumper ends and the free space begins. Without this procedure, the braking function may not work correctly.
⚠️ Caution: Do not attempt to replace sensors without knowing their exact location. Some models have sensors in different places on the bumper, and mixing them up will lead to permanent errors.
If you replaced the entire bumper, calibration is required. Even if all sensors are working properly, the system will not work since it does not know the geometry of the new bumper. In dealerships this is done in 30-40 minutes using a laptop and an adapter.
After replacing any bumper element or sensors, be sure to carry out a calibration procedure so that the system correctly estimates the distance to obstacles.
Specifics of working at low temperatures
In winter, the problem “The maneuvering braking function is currently unavailable” is especially common. Low temperatures affect the performance of ultrasonic sensors and electronics. Snow stuck to the bumper or ice crust can completely block the signal.
Even if the sensors are visually clean, condensation can accumulate inside the housing, which freezes and disrupts the operation of the sensitive element. In such cases, warming up the car helps. Turn on the heater, direct a stream of warm air to the bumper and wait 10-15 minutes. Often after this the error disappears by itself.
It is also worth checking the battery performance. In severe frosts, its capacity drops, and the voltage may not be enough for the correct operation of all systems. If the voltage drops below 12 volts, the safety system turns off first to save energy to start the engine.
Some owners use special anti-ice sprays to treat the bumper. This helps prevent snow and ice from sticking to the sensors. However, do not use harsh chemicals that may damage the bumper plastic or sensor coating.
Before winter, treat parking sensors with silicone grease or a special anti-icing agent - this will extend their service life and prevent false alarms.
Professional repairs and service calls
If all of the above methods did not help, and the error “The braking function during maneuvering is currently unavailable” persists, you need to contact a specialized service. Self-repair in this case can lead to even bigger problems, especially if the problem is in the software or CAN bus.
The service will conduct a complete diagnosis of all vehicle systems. This includes checking wiring, measuring sensor resistance, checking control units and flashing them. In some cases, the parking control unit needs to be replaced, which is an expensive procedure.
Choose a service that specializes in VAG cars. They have the necessary equipment and software for correct diagnosis and repair. Dealer centers guarantee the use of original spare parts and compliance with all technical regulations of the manufacturer.
Remember that safety is a priority. If the braking system does not work, use extreme caution when maneuvering. Use your mirrors and rearview camera, but don't rely on automatic braking. It is better to spend time and money on repairs now than to face the consequences of an accident later.
If the error cannot be resolved by independent methods, do not delay your visit to the service center - a non-functioning security system poses a direct threat when reversing.
What to do if the error disappears when warming up?
If the error disappears after the car warms up, most likely the problem is in the contacts or condensation inside the sensors. Try drying the sensors with a hairdryer or leaving the car in a warm garage. If the problem persists, the sensors may need to be replaced or the wiring repaired.
Is it possible to drive with this error?
The car will technically move, but you will lose the automatic braking feature when maneuvering. This means that if you encounter an obstacle at low speed, the car will not brake itself. You can drive, but with extreme caution, monitoring the situation visually.
How much does it cost to repair parking sensors?
The cost of one original sensor varies from 1500 to 3000 rubles. Replacement work takes about 30-40 minutes and costs 1000-2000 rubles. If the control unit needs to be replaced or calibrated, the cost can increase to 10,000 rubles or more.
Will resetting errors through a scanner help?
Resetting errors through the scanner may temporarily clear the message, but if the physical problem is not resolved (such as a dirty sensor or broken wire), the error will return immediately after restarting the system. Reset is only needed to check after repair.
Does replacing the battery affect the operation of the system?
Yes, after replacing the battery, the system may require adaptation. Sometimes it is necessary to drive several kilometers in different modes so that all control units are configured correctly. If the error persists, you may need to reset the adaptations via the scanner.