How To Clear Service 4WD Light On Jeep. Simple Actions To Take!

How to clear service 4WD light on Jeep.

A photo of a dashboard showing the 4wd light - How To Clear Service 4WD Light On Jeep
How To Clear Service 4WD Light On Jeep | Photo Credit: Engine Diary Blog

 

The Jeep’s 4WD light often flashes, particularly when it detects your vehicle as unsafe to drive.

To ensure your safety and the proper functioning of vehicle components, you must clear the service 4WD light on the Jeep.

 

How To Clear Service 4WD Light On Jeep

 

To clear the flashing service 4WD light on your Jeep, you can reset it primarily by replacing the blown-out fuse or repairing the faulty units, such as a faulty sensor, axle, or incorrect gear shifting.

Depending on the cause, you need to follow the appropriate workaround.

Some of these issues have do-it-yourself hacks, while others require professional attention.

So, how can you determine which ones you can address on your own?

We’re here to guide you through it, along with providing instructions for clearing the 4WD light!

 

 

What Does The Service 4WD Light Mean In Jeep?

 

Jeep manufacturers have designed the service 4WD light to enhance the smoothness and safety of your drive.

This light serves to assess the condition of your vehicle’s 4-wheel drive system, illuminating to signal any malfunctioning components.

Its purpose is to remain illuminated as a reminder for you to promptly address any issues, ensuring a smooth ride.

Typically, the light indicates faults with sensors, computer programs, axles, or vehicle wiring.

 

Do All Jeep Models Experience The 4WD Light Issue?

 

The service 4WD light is not present in all Jeep models since not all of them offer a 4-wheel drive option.

It is exclusively installed in models with engines that distribute power equally to all four wheels.

Moreover, the majority of Jeep models equipped with off-road capabilities, such as the Jeep Grand Cherokee, Wrangler, Renegade, Liberty, Compass, and Gladiator, come with 4WD.

Consequently, if these vehicles encounter issues, they may experience trouble with the 4WD light.

 

What Causes the Service 4WD Light to Stay On in a Jeep?

 

Faulty Fuse and Wiring:

The fuses are responsible for supplying power to the 4WD light.

Loose or faulty fuses disrupt the flow of electricity required for the proper functioning of the light.

Consequently, even if there are no issues with your vehicle, the light may blink due to an inactive fuse.

Additionally, improperly connected wires in the dashboard and engine compartment can cause short circuits, preventing the 4WD light from turning off.

 

Malfunctioning Transfer Case:

 

The transfer case transfers power from the Jeep transmission to the axles, enabling the vehicle to operate at various speeds and positions.

However, an aged or overheated transfer case may fail to maintain power distribution.

Consequently, difficulties may arise in shifting gears, leading to a lack of acceleration when the engine is revved.

These performance issues prompt the appearance of the 4WD light as a warning of potential risks.

 

Incomplete Gear Shifting:

 

Incomplete gear shifting occurs when switching from 2WD to 4WD mode at an inappropriate time, such as while the vehicle is in motion.

Such improper gear shifting activates the 4WD light.

To prevent this, it’s crucial to switch driving modes while the vehicle is in standby mode.

 

Faulty Wheel Sensor:

 

The wheel sensor monitors tire rotation speed.

If the sensor fails to detect the wheel speed due to electrical or internal damage, the service 4WD light may flash.

Additionally, this malfunctioning sensor can impact the braking system’s performance.

Therefore, the blinking 4WD light serves as a warning while driving.

 

How To Clear The Service 4WD Light On Jeep?

 

Resetting The 4WD Light:

 

A reset may prove effective if the issue stems from a glitch or faulty fuse.

Here’s how to perform the reset:

  1. Reduce your Jeep’s speed to deactivate the light, then shift the gear to the neutral position.
  2. Move the transfer case to 4 HIGH, and once the Jeep is in gear, switch the transfer case lever to 2 HIGH.
  3. Turn off the engine and park the vehicle on a level surface. Give the engine a few minutes to cool.
  4. Consult the owner’s manual to locate the Fuse Box near the engine compartment.
  5. Carefully remove any faulty or damaged fuses using needle-nose pliers.
  6. If the fuse appears intact, wait ten seconds before reinserting it into its socket.
  7. If replacing the fuse, ensure it matches the recommended amperage rating indicated on the old fuse.
  8. Restart the engine to engage it. The reset should clear the light. If not successful, try the alternative methods below.

 

Fixing The Transfer Case:

 

If the transfer case appears overheated or malfunctioning, you can address it using the following DIY methods:

Step 1: Clean the Case:

Remove any debris and dirt from around the case gasket using a soft brush and dry cloth.

 

Step 2: Add Fluid:

Ensure proper lubrication by adding heat-resistant oil if the vehicle is low on fluid.

Regularly refill transmission or engine oil every 3000 to 5000 miles to prevent overheating.

 

Step 3: Replace the Case:

 

If cleaning and cooling the case do not resolve the issue and the 4WD light persists, seek professional assistance to replace the case, as it can be a complex task.

 

Replacing The Wheel Sensor:

 

  1. Park the vehicle on a flat surface and lift it with a jack lift, securing it with a jack stand.
  2. Identify the malfunctioning wheel sensor.
  3. Remove the wheel using a lug wrench.
  4. Disconnect the electrical connector from the sensor.
  5. Loosen the screws or bolts securing the sensor and remove it.
  6. Install the new sensor in the mounting position.
  7. Reconnect the electrical connector.
  8. Reinstall the wheel and lower the vehicle.
  9. Take a test drive to ensure the light no longer appears.

 

 

Frequently Asked Questions

 

Is It Okay To Drive With Service 4WD Light On?

 

Automotive experts advise against driving when the 4WD light illuminates.

Just because the car is operable in 4WD mode doesn’t imply that it should be driven.

Delaying the repair of the issue that triggers the light can result in damage to various components of the vehicle.

Driving the car with the light illuminated poses a risk to both your safety and the functionality of the vehicle.

Therefore, as soon as the light activates, it’s important to identify the issue or take your Jeep to a repair centre.

 

How Do I Get My Jeep Out Of 4WD Low?

 

Shift the transmission into neutral and locate the 4WD lever or button, typically positioned near the gear shifter.

To deactivate 4WD low, move the lever or click the button.

 

 

Conclusion

 

To conclude, clearing the service 4WD light on a Jeep is crucial for maintaining safety and ensuring proper vehicle functionality.

Resetting the light by replacing a blown-out fuse or addressing faulty components like sensors or axles can be effective.

It’s important to address the issue promptly to prevent damage to vehicle compartments.

Additionally, driving with the 4WD light on is not recommended, as it poses risks to both safety and vehicle performance.

Taking immediate action upon the light’s activation, such as identifying the issue or seeking professional assistance, is essential.

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