
The flashing 4WD light generally indicates a fault in the 4WD system, most commonly caused by a damaged brake light switch. It is advisable to have it checked. If there is also an issue with the transmission, the gear position switch should be replaced as well. Car engine fault light: The car engine fault light flashing is usually due to the oxygen sensor detecting an abnormal air-to-fuel ratio. If the short-term fuel trim correction coefficient remains too high or too low for an extended period, the long-term fuel trim correction coefficient will adjust accordingly. This indicates that the engine control unit has been operating the engine with either a richer or leaner mixture for some time. Engine fault troubleshooting methods: Regularly changing the engine oil and oil filter is an essential part of routine engine maintenance. Over time, the quality of any grade of engine oil will degrade. After reaching a certain mileage, component wear can lead to engine faults and reduced performance. To prevent such issues, it is important to change the oil regularly based on the mileage and maintain the oil level appropriately.

When I first drove my Pajero, I also encountered the 4WD light flashing. It was probably due to a minor sensor issue. When the 4WD light flashes like this, it means the system has detected an abnormality, such as inconsistent wheel speed sensor readings or a problem with the driveshaft. It's especially noticeable while driving, particularly when switching modes—the light flashes intensely. This needs to be addressed promptly; don’t wait for a small issue to become a big one. Last time my car had this problem, it turned out to be a loose wiring connector—just tightening it fixed the issue. I recommend first checking if the tire pressure and tread wear are even, then try restarting the engine a few times. If the light keeps flashing, take it straight to a 4S shop or repair shop for a computer diagnostic. Safety first—better to avoid any mishaps when off-roading.

Driving the Pajero for so many years, encountering flashing 4WD lights is quite common. Most of the time, it's an electrical issue, like sensors being clogged with mud or control module signals getting disrupted. I remember one winter when the lights flashed while driving in the snow—it turned out the wheel speed sensor was dirty. This kind of flashing indicates the 4WD system might not be switching correctly, affecting driving stability, so don’t take it lightly. If you’re handy, you can clean the dust around the chassis sensors yourself, but be careful not to damage the wiring. If that doesn’t work, have a professional mechanic check the circuit and also inspect the brake fluid and differential oil. Regular maintenance can help reduce these minor issues.

When I was off-roading in my Pajero, I found the 4WD light flashing quite annoying. The reason might be that the 4WD system detected abnormal speed differences, such as uneven grip between the front and rear wheels or a loose sensor wire. That day on the mountain road, the light was flashing, and I was afraid of breaking down halfway, so I stopped to check the tires and suspension, but there were no obvious issues. After returning home, I had a technician take a look, and they said the control unit signal was weak. In any case, don’t panic—first try restarting the vehicle or switching driving modes. If it still flashes, get to a shop as soon as possible to test the sensors and fuses, so it doesn’t disrupt your daily use.


