What does service 4wd light mean in jeep

Hi ,on this jeep i have the service 4wd system light comes on alot took it to dealer they said nothing wrong but can`t keep the light off how can i get it to stay off. thanks Joe

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What does service 4wd light mean in jeep

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Anyone who off-roads for a hobby knows that four wheel drive is a must have. Unlike two wheel drive cars, vehicles equipped with four wheel drive (4WD) have a transfer case that takes the power from the engine and sends it to the front and rear wheels. Most four wheel drive vehicles also have a low and high range depending on the situation. Even though there is a button or shifter that is used to activate four wheel drive, auto makers include a light on the dash to let the driver know what setting is being used.

What the four wheel drive indicator light means

When you engage the four wheel drive, a corresponding light is illuminated on the dash. Vehicles with multiple gear ranges will also indicate what range has been selected. High and low are commonly abbreviated to “hi” and “lo” respectively. Some vehicles may only have an indicator for low range as high range is the default. Refer to the owner’s manual of your vehicle for specific information on your four wheel drive system.

Newer model vehicles have started using electronics to control the four wheel drive. Some of these electronically controlled systems have a 4x4 automatic mode. This mode keeps the vehicle in two wheel drive mode for most of the time until extra traction is necessary. The car’s computer monitors the wheel's rotational speeds and if it notices any slipping, it will send the power to all four wheels to keep the car moving.

Vehicles that have four wheel drive systems tend to have a separate light to indicate an issue with the system. Usually labeled “Service 4WD”, when this light comes on, a code will be stored in the computer’s memory to help identify any issues. Depending on the problem, the four wheel drive may be disabled temporarily. Sometimes if you haven’t used four wheel drive in a while, the computer may think that the transfer case isn’t lubricated properly. If your Service light turns on, try engaging the different gear ranges and driving around a little bit to move the oil around. Hopefully, the next time you start the engine, the light will be off.

Is it safe to drive with the four wheel drive indicator lights on?

Using four wheel drive in slippery situations makes a huge difference to the vehicle's driveability. You should never engage four wheel drive on dry pavement. Four wheel drive requires some slippage to occur between the front and rear wheels which is why it’s perfect for gravel, snow, and sand. On dry pavement, the grip prevents any slipping from happening and enabling four wheel drive will overstress the drivetrain. Vehicles equipped with automatic four wheel drive switch between the modes on demand so you don’t need to worry about switching it yourself.

If your service light is on or if your four wheel drive system doesn’t seem to be working properly, ask one of our certified technicians to help you diagnose any problems.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

What does service 4wd light mean in jeep
This warning light will illuminate to signal a fault with the 4WD system. If the light stays on or comes on during driving, it means that the 4WD system is not functioning properly and that service is required. We recommend you drive to the nearest service center and have the vehicle serviced immediately.

    Other information:

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    Is it OK to drive with service 4WD light on?

    The "Service 4WD System" message indicates a problem with the 4WD system that should be properly diagnosed and repaired. When the ignition key is turned from OFF-RUN-START and is released back to the RUN position after the vehicle starts, the 4WD warning light should go on for 1 to 2 seconds and then go out.

    How do I fix my 4WD service light?

    To reset the Change Oil light turn the ignition on but do not start and then push the gas pedal 3 times. The Service 4WD light is most likely the 4WD switch on the dashboard. If the lights are acting funny then the switch needs to be replaced.

    What does service 4WD light mean in Jeep Wrangler?

    Jeep Wrangler: Yellow Warning Lights / Service 4WD Warning Light — If Equipped. This warning light will illuminate to signal a fault with the 4WD system. If the light stays on or comes on during driving, it means that the 4WD system is not functioning properly and that service is required.

    What does 4 wheel drive service mean?

    IMPORTANCE OF 4X4 SERVICE 4x4, or four-wheel drive, is a drive-train that delivers power to all four wheels at once. If you drive a vehicle with four-wheel drive, you know that you put it through a lot.