Why is the display screen of Haval M6 not lighting up?

[LeMalia]

The display screen of Haval M6 not lighting up may be due to a disconnection of the car linkage or the host system crashing. Below are some relevant details about the Haval M6: 1. Exterior: The Haval M6 adopts a new design language, featuring a star-dotted grille, integrated lens headlights for high and low beams, a floating roof design paired with unique "boomerang" chrome strips, roof rails, and dragon-wing side waistlines, making the overall body lines more fluid and creating a strong sense of technology and sportiness. 2. Powertrain: The Haval M6 is equipped with a 4G15B-1.5T manifold injection engine that meets the China VI emission standards, with a maximum power output of 110 kW and a peak torque of 210 N·m, delivering average performance. In terms of suspension, the vehicle uses a front MacPherson and rear double-wishbone four-wheel independent suspension system, with professional SUV chassis tuning to ensure stability and comfort during high-speed cornering or when driving on bumpy roads.

[VivienneMarie]

Last month, my cousin's Haval M6 had the same issue. After struggling for a while, we found out that the display switch on the left side of the steering wheel was accidentally turned off. First, check those buttons with screen icons below the left side of the dashboard and try holding one for 3 seconds. If that doesn't work, check the fuse box. There's a cover with a battery symbol at the lower left of the driver's seat. Open it and look for the 15-amp blue fuse labeled 'RADIO' or 'NAVI'. I've modified my center console myself, so I'd remind you to check if you've recently installed a dashcam or modified the audio system, as loose wiring connections can cause a short circuit. If the screen is completely dead, disconnect the negative terminal of the battery for five minutes and then reconnect it. This trick is super effective for rebooting the car's infotainment system.

[ElijahAnn]

My old M6 often acts up in winter. Before rushing to the dealership, pry open the fuse box on the right side of the dashboard, locate the F16 fuse (marked with a display icon), pull it out and check against light. If the middle section is blown, just buy a same-spec replacement for five bucks at the auto parts market. Once after a car wash, the screen went black - turned out water seeped from the AC vent onto the connectors behind the center console. Using a hair dryer on cool setting to blow the wiring connections fixed it. Focus on the wire harness behind the glove compartment - the green connector tends to loosen most. If the screen blacks out during reverse but the parking sensors still beep, it's likely a frayed camera wire.

[DelAngelina]

Experience in repairing black screen failures for seven identical car models: First, prioritize ruling out system freeze by simultaneously holding the steering wheel menu button and volume knob for ten seconds to force a restart. Second, check the spare fuse box, located in the metal box under the passenger foot mat—the 7.5-amp yellow fuse is responsible for screen power supply. Third, pay attention to devices plugged into the cigarette lighter; I've encountered cases where a car charger leakage caused screen flickering. If there's no response after three restarts, disassemble the head unit and inspect the metal contacts of the dual-screen cable (the one with yellow and white rubber coating) for oxidation or blackening. For moisture-related issues in the main unit, which are more common during the rainy season, disassemble and air it out for two days.

[DelGraham]

Here's a three-level troubleshooting approach for your situation:

1. Primary check: See if the hazard lights turn on. If not, it indicates a complete power failure, and you should inspect the battery terminals.
2. Intermediate check: After starting the car, press the AC button to see if there's any response. If there's no reaction, check the main fuse of the central control unit.
3. Advanced issue: This is more complicated. Last year, we repaired a car where the capacitor on the head unit's motherboard was swollen. Here's a makeshift method: firmly tap the plastic cover above the screen – if there's a poor connection, the screen may flicker after a few taps. Focus on checking the gray connector behind the central control unit. Use a paperclip to short-circuit pins 3 and 11 to see if the screen lights up with the logo. Additionally, any aftermarket devices must be completely removed before testing.

[DeSienna]

Voltage instability can severely damage the screen! Keep a multimeter handy to measure the cigarette lighter voltage. If it exceeds 15 volts at idle, replace the generator regulator immediately. A common issue with the Haval M6 is poor heat dissipation in the navigation unit, so remember to clean the air vents before long trips. I always keep an OBD cable in the glove box to connect to my phone with a car diagnostic app to read fault codes. If the screen doesn’t light up but you can read the B+15 power code, it confirms a power supply issue. Be cautious when modifying headlights—incorrect relay wiring can cause the ECU to shut down abnormally. In emergencies, use a phone mount to secure your phone, turn on a hotspot, and connect to the car’s system for navigation.