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What causes the black screen on Jaguar XJL display?

2 Answers

DonovanRose

07/28/25 9:38pm

For the black screen issue on Jaguar XJL display, preliminary diagnosis based on fault codes suggests two possible directions: the fan and related circuits, or the instrument cluster and related circuits. By referring to TOPIX wiring diagrams and circuit reference diagrams, the layout of circuits and component locations were determined. Following TOPIX technical guidelines, fuse F6110A was checked and found to be in good condition. The trim panel under the left side of the dashboard was removed to inspect the fan circuits, with both power supply and grounding confirmed normal. The cooling tube from the fan to the instrument cluster was properly installed. With the ignition switched on, the fan operated normally, ruling out issues with the fan and related circuits. The instrument cluster showed no external damage, and connectors were properly attached. Using TOPIX circuit diagrams, a multimeter measured power supply at C2MC01A/12 and grounding at C2MC01A/9, both normal. Based on these tests, the issue was preliminarily diagnosed as an internal fault in the instrument cluster. Swapping in an instrument cluster from a salvage vehicle displayed the mileage and Jaguar logo correctly, confirming the issue as an internal fault in the instrument cluster. No relevant technical bulletins were found in TOPIX, necessitating replacement of the instrument cluster. Advantages of Jaguar XJL display: Perfect design, user-friendly, energy-efficient, and clear screen. Disadvantages of Jaguar XJL display: No automatic headlights.

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AdrianMarie

08/12/25 2:14am

My Jaguar XJL also experienced a black screen before, and it turned out to be a wiring issue after inspection at the 4S dealership. Oxidation and poor contact at the infotainment system wiring connectors are common causes, especially in humid areas. Another frequent issue is a blown fuse - locate the 10A fuse labeled 'Infotainment' in the fuse box on the left side of the steering wheel. System crashes can also cause black screens; just hold down the volume knob to reboot the entire head unit. Once my navigation map update failed and crashed the system, requiring a reflash to recover. It's best not to attempt DIY repairs for such electronic faults as the wiring is too complex and you might damage other components. Also remember to check battery status, as low battery voltage can affect screen power supply.

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