Visibility System Malfunction For Scania (Here Is How To Solve)

visibility system malfunction scania

When it comes to trucks, Scania is undeniably one of the most popular and admired brands in the industry. Known for their beautiful design and extensive customization options, Scania trucks have gained a loyal following.

However, there is a recurring issue that has been a cause for disappointment among truck enthusiasts – the visibility problem.

In this article, we will delve into the visibility problem with Scania trucks, exploring the various factors that contribute to this issue and examining its impact on drivers.

By analyzing information from multiple sources, we aim to provide a comprehensive understanding of the problem and shed light on potential solutions.

The Default Visibility Position

One of the primary concerns raised by Scania truck owners is the default position of the mirrors, specifically the side mirrors.

As seen in various screenshots shared by users, the default position of the mirrors leaves a significant portion of the mirror obscured, limiting the driver’s field of view.

This is not a problem exclusive to a few models; even the high-end Scania S trucks suffer from this visibility issue.

The Realistic Visibility in Reality

To address the question of whether Scania trucks have such visibility issues in reality, it is important to consider the design choices made by the manufacturer.

While it is true that the default mirror position may not provide optimal visibility, it is crucial to note that Scania trucks are designed to be adjustable to suit individual preferences.

The adjustment feature allows drivers to find a position that offers better visibility, ensuring their safety on the road.

The Dilemma of Adjustments

However, some drivers have expressed difficulty in finding the perfect position for the mirrors despite the adjustability feature.

Adjusting the mirrors often involves a trade-off between the position of the steering wheel and the driver’s proximity to the ceiling.

This dilemma has led some drivers to prefer the default position, avoiding the need for constant adjustments.

The Impact on Driver Experience

The visibility problem with Scania trucks has had a significant impact on the overall driver experience. For enthusiasts who have saved up to invest in an expensive Scania truck, the disappointment of encountering this issue can be disheartening.

The need for constant adjustments or settling for a less-than-ideal default position can detract from the joy of owning and driving a Scania truck.

The Scania VIS System: A Potential Solution

While the visibility problem remains a concern, Scania has developed the VIS (Vehicle Information System) to address various diagnostic and maintenance aspects of their trucks.

The VIS system provides a range of functionalities that can aid in identifying and resolving issues related to the truck’s components and systems.

Manual Diagnostics Process

The VIS system offers a manual diagnostics process through display codes and blinking codes. This enables users to identify any potential faults in the system and take appropriate action to rectify them.

By providing information about the fault codes detected in the ECU (Engine Control Unit), the system assists in troubleshooting and clearance of the fault code memory.

Fault Code Reading

One of the key features of the VIS system is the ability to read the ECU failure memory and obtain information about the fault codes detected.

This function allows the user to understand the specific issues affecting the truck and take the necessary steps to address them.

Clearing the fault code memory can be done if the fault code is no longer active, ensuring a more accurate diagnosis.

Measure Values

The VIS system also provides the capability to display the values of different sensors connected to the ECU. This feature allows users to monitor the performance and functioning of various components within the truck.

By providing real-time data, drivers can identify any anomalies and make informed decisions regarding maintenance and repairs.

Components Actuation

Another valuable functionality of the VIS system is the ability to perform direct tests on system components.

This feature enables users to actuate specific components, such as ABS modulators or suspension solenoid valves, in order to evaluate their functionality.

For engines, the system allows for active diagnosis, enabling tests to calibrate the state of the cylinders and ensure optimal performance.

ECU Data and Parameters

The VIS system provides access to technical data of the ECU, including serial numbers, software versions, and manufacturer references.

This information proves invaluable when diagnosing and troubleshooting issues within the truck’s systems.

Additionally, the system allows for the modification of certain parameters, providing flexibility in adapting the truck to specific requirements.

Calibration and Reset

In certain cases, the VIS system may require the calibration of specific components for optimal operation. Electronic suspensions, for example, often require reference values to be stored in the ECU to ensure accurate functionality.

The system also allows for the reset of control unit maintenance counters, ensuring that maintenance operations are properly tracked and managed.

System Technical Data and Wiring Diagram

The VIS system provides technical information about the various systems in the truck, including checking values, descriptions, graphics, and charts.

This data assists in understanding the intricacies of the truck’s components and aids in troubleshooting and maintenance tasks.

Additionally, the system offers detailed wiring diagrams, simplifying the diagnostics process by providing visual representations of the system’s configuration and component locations.

Vehicle Technical Data and Maintenance

In addition to system-specific information, the VIS system also offers technical data about the vehicle as a whole.

This includes engine technical data, tightening torques, capacities, and other relevant information. Furthermore, the system provides a section dedicated to vehicle maintenance, displaying maintenance intervals and operations to be performed.

This feature proves especially useful for workshop management and customer communication.

Troubleshooting the Visibility Problem

While the VIS system offers a range of diagnostic and maintenance functionalities, it is important to note that the visibility problem with Scania trucks may not be directly addressed by this system.

However, by utilizing the system’s capabilities, users can ensure that other components and systems are functioning optimally, reducing the risk of any additional issues affecting visibility.


In conclusion, the visibility problem with Scania trucks is a concern that has been raised by many truck enthusiasts. While the default position of the mirrors may not provide optimal visibility, the adjustability feature allows drivers to find a position that suits their preferences.

Additionally, the VIS system offers a comprehensive set of diagnostic and maintenance functionalities to address various issues within the truck’s systems.

By utilizing these features, drivers can ensure the overall performance and safety of their Scania trucks.

While the visibility problem remains a challenge, Scania continues to innovate and improve its trucks, striving to provide the best possible experience for its customers.

With the combination of driver adjustments and the utilization of the advanced VIS system, Scania truck owners can navigate the roads with enhanced confidence and peace of mind.

Steve P.

Steve is an automotive technician, technical writer, and Managing Editor. He has held a lifelong passion for cars, with a particular interest in cars like the Buick Riviera. Steve is based in Boise, Idaho.

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