Every vehicle has a warning light that alerts drivers of any potential issues with the car engine, transmission, tire pressure, or any other part of the car. Off-roading vehicles with 4×4 capabilities have an indicator light that alerts drivers that the 4WD mode is activated. In this case, once a driver shifts to the 4WD mode, the indicator light starts to flash. The light goes off once the vehicle becomes engaged.
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However, if it continues to stay on, then there is an issue. The issue could be a wiring one or a problem with its electrical components. But, it could not mean it’s a severe problem. Check your car’s owner’s manual for potential issues, or make an appointment with an experienced mechanic.
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Still, always pay attention to 4WD light flashing as it can lead to potential damage to the all-wheel drive system. Here are the three common problems that can lead to a 4WD light flashing.
- Overheated Transfer Case
The four-wheel drive vehicle’s drivetrain comes equipped with a differential on each axle and a transfer case, which splits the power from the transmission to the front and rear axles.
In light-duty vehicles like SUVs and crossovers, the transfer case could overheat when navigating off-road driving conditions like rock crawling or deep mud.
Finding yourself spinning your wheels with no forward motion or stuck to the point where you can’t move, continuing to hit the gas can generate significant heat inside your vehicle’s transfer case. Once the transfer case overheats, the 4WD light begins to flash.
It’s a way of warning the driver that the vehicle may not be able to operate until the system has cool down. In that case, let the vehicle cool down before attempting to go back off-roading with it. It could lead to serious problems when ignored over time.
- Sensor Failure
There is an intricate network of switches and sensors that helps a four-wheel-drive system operate efficiently, controlling everything from transmission speed to throttle position.
If the sensor stops transmitting data, the 4WD light starts to indicate a sensor failure. Once you’ve noticed this, drive your car to a certified mechanic to help you find out the issue and fix it.
- Incomplete Gear Shift
An incomplete gear shift can also trigger the four-wheel drive warning light, occurring when a driver changes from a two-wheel drive to a four-wheel drive while the car is in motion.
This often leads to serious damage, which sends the four-wheel-drive system into a frenzy, giving a service message leading to the flashing light of the four-wheel-drive system.
Switching to 4WD mode is essential to avoid necessary damage. It allows the vehicle to get into the proper gear, leading to a smoother transition and eliminating damage to the four-wheel-drive system.
Conclusion
Four-wheel-drive light flashing can lead to panic. When you realize this, first check your car manual to know what could be wrong. If you can’t figure it out. It’s best you take the vehicle to the nearest experienced mechanic.
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