Mercedes dashboard display Not Working
Mercedes dashboard display or screen sporadically black
A sporadically black dashboard display in a Mercedes could be indicative of several issues. Sometimes, when opening the door of certain models of Mercedes-Benz equipped with the MBUX system, notably the A-Class W177, B-Class, CLA W118, or GLA H247, you may notice that the driver-side screen remains off, or even both screens. In these situations, no welcome animation is displayed. Furthermore, even after starting the engine, the driver’s screen or all screens remain inexplicably off. This anomaly can be frustrating, hindering the smooth driving experience you expect from your Mercedes-Benz. It is crucial to understand this situation in order to effectively remedy it and fully regain the pleasure of driving your vehicle with peace of mind.
What are the screen options for Mercedes A Class?
The screen in your Mercedes A-Class is much more than just a display; it’s the central pivot of your driving experience. As the central hub, it connects you to an impressive array of vital features. Thanks to an integrated navigation and infotainment system, you can stay connected to the outside world while being entertained. Moreover, climate control and personalized comfort settings allow you to create a driving environment perfectly tailored to your preferences.
Safety is also paramount, with the driving assistance system and rear-view cameras providing an unprecedented panoramic view of your immediate surroundings. These technologies enable you to navigate with confidence, enhancing your safety and peace of mind on the road. In summary, the screen in your Mercedes is much more than a mere accessory; it’s the pulsating heart of your driving experience, offering you comfort, entertainment, and safety all at once.
Mercedes dashboard screen not working
If the Mercedes dashboard screen not working at all, there could be several reasons for this issue. Here’s a step-by-step guide to troubleshoot then we will analyze a case study in Mercedes A-Class
- Check Power Supply: Ensure that the vehicle’s battery is charged and the ignition is turned on. A dead battery or electrical system failure could cause the screen to remain black.
- Inspect Fuses: Check the vehicle’s fuse box to see if any fuses related to the infotainment system or dashboard display are blown. If you find a blown fuse, replace it with a new one of the same amperage.
- Restart the System: Sometimes, electronic systems can experience glitches that can be resolved by restarting them. Try turning the vehicle off, waiting a few minutes, and then turning it back on to see if the screen resets.
- Check for Physical Damage: Inspect the dashboard screen for any physical damage, such as cracks or water damage, which could be causing the issue. If you find any damage, it may require professional repair or replacement.
- Software Update: If the vehicle’s infotainment system has the option for software updates, check if there are any available updates and install them. Software updates can often resolve bugs and improve system stability.
Mercedes dashboard display not working : Case study
Mercedes dashboard display or screen sporadically black : A-class Troubleshooting
A Mercedes-Benz customer owns a Mercedes A-Class W177 and is pleased with the new MBUX technology in this superb Compact Mercedes. However, they sometimes encounter an issue: the driver-side screen, or in some cases both screens, remains off when opening the door. No welcome animation appears. Additionally, the driver’s screen or even all screens remain off when starting the engine.
This malfunction can compromise the user experience and requires special attention to ensure the proper functioning of the electronic equipment onboard the vehicle. It is recommended for the owner to contact the after-sales service of Mercedes-Benz for technical assistance and to quickly resolve this issue, in order to fully enjoy all the features of their A-Class.
After bringing their vehicle to a Mercedes dealership, an expert technician from the Mercedes-Benz brand, leveraging their expertise and enriching experience, suggests that one of the following causes could be responsible for the problem:
- Damaged HVSL and/or SHD data cables.
- Malfunction of the combined instrument cluster software.
- An issue related to the screen ensemble software.
- A defect in the Leporello of the screen ensemble or central screen.
These suggestions stem from their experience in the field and their deep knowledge of the electronic and computer systems of Mercedes-Benz vehicles. Therefore, they recommend a thorough inspection to precisely identify the source of the malfunction and proceed with the necessary repairs to restore the proper functioning of the screens and ensure customer satisfaction.
To detect the source of the problem, it is necessary to perform the following checks:
- Carefully examine the HVSL and SHD data cables connecting the instrument cluster to the central screen, as well as those connecting the screen ensemble’s Leporello to the MBUX (Mercedes-Benz User Experience).
- Check the physical condition of the cables to detect any external damage such as cuts, bends, or deformations.
- Ensure that the cables are properly connected and secured in their respective locations, ensuring that there are no loose or poorly secured connections.
- Perform continuity tests and resistance measurements to assess the electrical integrity of the cables and detect any connection or short-circuit issues.
These checks will help identify any anomalies or potential defects in the data cables, which will be a crucial step in the diagnostic process aimed at resolving the issue of screens being off on the Mercedes A-Class W177.
To diagnose the problem:
1. Remove the screen from its mounting points to access the HVSL and SHD cables as well as the connector.
2. Gently move the HVSL and SHD cables as well as the connector when the image is active on the screen.
3. If the fault occurs when the cables are manipulated, start by checking the positioning and fit of the connectors of both cables on the side of the screen.
4. If the connectors are not damaged, replace the cables according to the provided instructions. Be sure to carefully follow the cable routing when assembling the screen ensemble or central screen to avoid any further issues.
5. Perform software updates if necessary: If the control units have outdated software versions or if operational issues are detected, proceed with software updates according to the procedures recommended by Mercedes-Benz.
With the new cables installed, perform another check to determine if the fault can be reproduced. If the problem persists despite replacing the HVSL and SHD cables, then replacing the screen ensemble or central screen is justified. These components may be the source of the screen malfunction, and their replacement may be necessary to fully resolve the issue encountered with the Mercedes A-Class W177.
For faults occurring sporadically and not reproducible after the bus has been reset:
If the above checks yield no results and both the Instrument Cluster Control Unit and the Screen Ensemble Control Unit or central screen control unit have the latest software version, then the next step is to replace the Screen Ensemble Control Unit or central screen control unit according to the instructions provided by the manufacturer.
This implies that despite software updates and the absence of any detectable faults during the mentioned checks, the malfunction persists randomly. In this case, replacing the Screen Ensemble Control Unit or central screen control unit is recommended, as these components may be the source of the problem.
Proceed with the replacement of the Screen Ensemble Control Unit or central screen control unit according to the manufacturer’s guidelines to effectively resolve the issues encountered with the screens and functionalities of the Mercedes A-Class W177.