How To Put Toyota 4Runner In 4 Wheel Drive?

Putting your Toyota 4Runner in 4-wheel drive (4WD) is simple and enhances your vehicle’s capabilities, especially in challenging conditions; millertoyota.net offers expert advice and service on this. By understanding the correct procedure and the types of 4WD systems, you can confidently navigate various terrains. Looking for reliable off-road adventures? Explore our 4WD options and service information on the Toyota 4Runner.

1. What Are The Different Types of 4WD Systems In The Toyota 4Runner?

The Toyota 4Runner has part-time and full-time 4WD systems to suit different driving needs.

Part-Time 4WD

The Toyota 4Runner’s part-time 4WD system is intended for off-road or slippery situations and should not be used on dry pavement. According to Toyota’s official documentation, the part-time 4WD system functions by firmly locking the front and rear axles, causing them to rotate at the same speed. This configuration delivers enhanced traction in loose or low-grip conditions. However, it lacks the center differential found in full-time systems, which allows for speed differences between the front and rear wheels when turning. Using part-time 4WD on dry pavement can cause driveline binding, leading to increased wear and tear on components such as the transfer case, axles, and tires.

Full-Time 4WD

The Toyota 4Runner’s full-time 4WD system is designed for use on all surfaces, including dry pavement, providing continuous traction and stability. A center differential is included in this system to allow speed variations between the front and rear axles during turns. According to Toyota’s official documentation, this reduces driveline stress and improves handling in various driving conditions. The full-time 4WD system improves driver confidence and control on both highways and off-road trails by automatically distributing power to the wheels with the most grip.

2. How Do I Engage 4 High (H4) In My Toyota 4Runner?

To engage 4 High (H4) in your Toyota 4Runner, follow these simple steps while driving under normal conditions.

1. Ensure Safe Conditions: Make sure you’re on a relatively straight and level surface.
2. Maintain Moderate Speed: Drive at a speed under 55 mph (88 km/h).
3. Shift into H4: Shift the transfer case lever into the H4 position while moving. For models with electronic controls, simply turn the dial to H4.

Alt Text: Toyota 4Runner 4WD dial showcasing the selection between 2H and 4H options.
4. Confirm Engagement: Check the 4WD indicator light on the dashboard to confirm that 4H is engaged.

Engaging 4H allows for increased traction on slippery surfaces, making it ideal for driving in snow, gravel, or light off-road conditions.

3. What Is The Procedure For Engaging 4 Low (L4) In A Toyota 4Runner?

To engage 4 Low (L4) in your Toyota 4Runner, you’ll need to follow a specific procedure to ensure a smooth and safe transition.

1. Stop the Vehicle: Bring your 4Runner to a complete stop on a level surface.
2. Shift to Neutral (N): Place the transmission in the Neutral (N) position.
3. Engage 4L: Shift the transfer case lever firmly into the L4 position. If you have electronic controls, turn the dial to L4. You may need to apply firm pressure.
4. Confirm Engagement: Wait for the 4WD indicator light to illuminate or stop flashing, indicating that 4L is fully engaged.

Alt Text: The gear shifting lever inside a Toyota 4Runner cabin, set in neutral position.
5. Shift to Drive (D): Once engaged, shift your transmission into Drive (D) to proceed.

4L provides maximum torque and is suitable for very challenging off-road conditions such as steep inclines, deep mud, or rocky terrain. It is essential to use 4L only when necessary to avoid unnecessary wear on the vehicle’s drivetrain.

4. When Should I Use 4 High (H4) In My Toyota 4Runner?

Use 4 High (H4) in your Toyota 4Runner when you need increased traction on slippery surfaces but don’t require the maximum torque provided by 4 Low (L4).

• Snow and Ice: According to the National Highway Traffic Safety Administration (NHTSA), winter driving conditions significantly increase the risk of accidents. Engaging 4H provides better grip and control on snow-covered or icy roads, helping to maintain stability and reduce the likelihood of skidding.
• Gravel Roads: Driving on gravel roads can cause tires to lose traction, especially at higher speeds. 4H helps maintain stability and control by providing more consistent power distribution to all four wheels.
• Light Off-Roading: For mild off-road trails with loose dirt or uneven surfaces, 4H offers sufficient traction to navigate obstacles without the extreme torque of 4L.
• Rainy Conditions: In heavy rain, hydroplaning can be a concern. 4H can improve traction and reduce the risk of losing control on wet roads.

5. In What Situations Should I Engage 4 Low (L4) In My Toyota 4Runner?

Engage 4 Low (L4) in your Toyota 4Runner when you need maximum torque and traction for severe off-road conditions or situations where precise control at low speeds is essential.

• Steep Inclines: Climbing steep hills requires significant torque to overcome gravity and maintain forward momentum. 4L provides the necessary power to tackle these inclines safely.
• Deep Mud: Driving through deep mud can cause tires to sink and lose traction. 4L delivers maximum torque to the wheels, helping to churn through the mud and maintain forward progress.
• Rocky Terrain: Navigating rocky terrain requires precise control and the ability to crawl over obstacles. 4L allows for slow, controlled movement, reducing the risk of damage to the vehicle.
• Sand Dunes: Driving on sand dunes can be challenging due to the loose and shifting nature of the sand. 4L provides the necessary torque to keep the vehicle moving and prevent it from getting bogged down.
• Towing Heavy Loads Off-Road: When towing heavy loads in off-road conditions, 4L provides the extra power and control needed to manage the weight and maintain traction.

6. How Can I Shift Out Of 4 Wheel Drive In My Toyota 4Runner?

Shifting out of 4-wheel drive in your Toyota 4Runner is a straightforward process. Here are the steps for both 4 High (H4) and 4 Low (L4):

From 4 High (H4) to 2 High (2H)

1. Slow Down: Reduce your speed to below 55 mph (88 km/h).
2. Shift to 2H: While moving, shift the transfer case lever to the 2H position. If your model has electronic controls, turn the dial to 2H.
3. Verify Disengagement: Check the 4WD indicator light on the dashboard. It should turn off, indicating that 4WD is disengaged.

From 4 Low (L4) to 2 High (2H)

1. Stop the Vehicle: Bring your 4Runner to a complete stop on a level surface.
2. Shift to Neutral (N): Place the transmission in the Neutral (N) position.
3. Shift to 2H: Shift the transfer case lever to the 2H position. For electronic controls, turn the dial to 2H.
4. Verify Disengagement: Ensure the 4WD indicator light turns off, confirming that 4WD is disengaged.
5. Shift to Drive (D): Shift back into Drive (D) to continue driving.

7. What Problems Can Occur When Shifting Into 4 Wheel Drive?

Several issues can arise when shifting into 4-wheel drive in your Toyota 4Runner, ranging from minor inconveniences to more serious mechanical problems.

• Driveline Binding: According to expert mechanics at millertoyota.net, driveline binding occurs when the front and rear axles are locked and forced to rotate at the same speed on a high-traction surface like dry pavement. This can cause stress on the drivetrain components, leading to difficult shifting, vibrations, and potential damage to the transfer case, axles, and tires.
• Difficulty Shifting: Difficulty shifting into or out of 4WD can occur if the vehicle is not completely stopped when attempting to engage 4L, or if there is tension in the drivetrain. Ensure the vehicle is on a level surface and in neutral when shifting into or out of 4L.
• Grinding Noises: Grinding noises during shifting can indicate worn synchronizers or other internal transfer case damage. This may require professional inspection and repair.
• 4WD Indicator Light Issues: If the 4WD indicator light does not illuminate or flashes continuously, it may indicate a problem with the 4WD system, such as a faulty sensor, actuator, or wiring issue.
• Stuck in 4WD: In rare cases, the 4WD system may become stuck, preventing the vehicle from shifting back into 2H. This can be caused by a malfunctioning actuator or a mechanical issue within the transfer case.

8. What Are The Common Mistakes To Avoid When Using 4 Wheel Drive?

To ensure the longevity and optimal performance of your Toyota 4Runner’s 4-wheel drive system, avoid these common mistakes:

• Using 4WD on Dry Pavement: Engaging 4WD, especially part-time systems, on dry pavement can cause driveline binding and damage to the transfer case and axles.
• Shifting into 4L at High Speeds: Attempting to shift into 4L while moving at high speeds can cause severe damage to the transfer case. Always come to a complete stop before engaging 4L.
• Neglecting Maintenance: Failing to regularly inspect and maintain the 4WD system can lead to premature wear and failure of components. Follow the manufacturer’s recommended maintenance schedule for fluid changes and inspections.
• Ignoring Warning Signs: Ignoring unusual noises, vibrations, or indicator lights can lead to more significant and costly repairs. Address any issues promptly to prevent further damage.
• Improper Tire Inflation: Maintaining proper tire inflation is crucial for optimal 4WD performance. Uneven tire pressure can cause uneven traction and stress on the drivetrain.

9. What Maintenance Tips Can Help Preserve The 4 Wheel Drive System?

To keep your Toyota 4Runner’s 4-wheel drive system in top condition, follow these maintenance tips:

• Regular Fluid Checks: According to service experts at millertoyota.net, regularly check the fluid levels in the transfer case and differentials. Low or contaminated fluid can cause increased wear and damage to internal components.
• Fluid Changes: Follow the manufacturer’s recommended maintenance schedule for fluid changes. Typically, transfer case and differential fluids should be changed every 30,000 to 60,000 miles, depending on driving conditions.
• Inspect Seals and Gaskets: Regularly inspect the seals and gaskets around the transfer case and differentials for leaks. Replace any damaged or worn seals to prevent fluid loss and contamination.
• Lubricate Moving Parts: Lubricate the moving parts of the 4WD system, such as the shift linkage and U-joints, to ensure smooth operation and prevent corrosion.
• Check for Unusual Noises or Vibrations: Pay attention to any unusual noises or vibrations coming from the 4WD system. These can be early warning signs of potential problems.
• Inspect Drive Shafts and U-Joints: Check the drive shafts and U-joints for signs of wear, damage, or looseness. Replace any worn or damaged components to prevent driveline issues.

Alt Text: Close-up view of Toyota U-Joints.

10. What Are Some Aftermarket Upgrades To Improve 4 Wheel Drive Performance?

Several aftermarket upgrades can enhance the 4-wheel drive performance of your Toyota 4Runner, providing improved traction, durability, and off-road capabilities.

• Locking Differentials: According to off-road enthusiasts, installing locking differentials can significantly improve traction in challenging conditions. Locking differentials ensure that both wheels on an axle receive equal power, even if one wheel is off the ground or has lost traction.
• Lift Kits: Lift kits raise the vehicle’s ride height, providing increased ground clearance and allowing for larger tires. This can improve approach, departure, and breakover angles, making it easier to navigate obstacles.
• Skid Plates: Skid plates protect the vulnerable undercarriage components of your 4Runner, such as the engine, transmission, and transfer case, from damage when off-roading.
• Upgraded Suspension: Upgrading the suspension with aftermarket shocks, springs, and control arms can improve ride quality, handling, and off-road performance.
• Performance Tires: Swapping out the stock tires for aggressive off-road tires can provide significantly improved traction on various surfaces, such as mud, sand, and rocks.

11. How Does The Automatic Disconnecting Differential (ADD) Work?

The Automatic Disconnecting Differential (ADD) is a system used in some Toyota 4Runner models to automatically engage and disengage the front axles, depending on whether 4-wheel drive is engaged. According to Toyota’s engineering specifications, the ADD system simplifies the process of switching between 2WD and 4WD, providing convenience and efficiency.

Functionality

1. Engagement: When 4H is selected, the ADD system engages the front axles, connecting them to the front differential. This allows power to be transferred to the front wheels, providing 4-wheel drive capability.
2. Disengagement: When 2H is selected, the ADD system disengages the front axles, disconnecting them from the front differential. This reduces drivetrain friction and improves fuel efficiency during normal on-road driving.

Benefits

• Convenience: The ADD system automates the engagement and disengagement of the front axles, eliminating the need for manual locking hubs.
• Efficiency: By disengaging the front axles in 2H, the ADD system reduces drivetrain friction and improves fuel efficiency.
• Reduced Wear: Disengaging the front axles in 2H reduces wear and tear on the front drivetrain components.

12. How Does Traction Control Affect 4 Wheel Drive?

Traction control is an electronic system that helps prevent wheel spin and maintain traction, particularly on slippery surfaces. When combined with 4-wheel drive, traction control can further enhance the vehicle’s capabilities and stability.

Functionality

• Wheel Speed Monitoring: Traction control uses sensors to monitor the speed of each wheel.
• Braking Intervention: If a wheel is detected to be spinning faster than the others, indicating a loss of traction, the traction control system applies braking force to that wheel.
• Throttle Reduction: In some cases, the traction control system may also reduce engine power to limit wheel spin.

Benefits in 4WD

• Enhanced Traction: By preventing wheel spin, traction control helps maintain traction and forward momentum in slippery conditions.
• Improved Stability: Traction control can improve stability and control by reducing the likelihood of skidding or sliding.
• Optimized Power Distribution: Traction control works in conjunction with the 4WD system to optimize power distribution to the wheels with the most grip.

13. What Role Does The Transfer Case Play In The 4 Wheel Drive System?

The transfer case is a critical component of the 4-wheel drive system in the Toyota 4Runner, responsible for transferring power from the transmission to both the front and rear axles. According to automotive engineers, the transfer case enables the vehicle to operate in 2-wheel drive or 4-wheel drive, depending on the driver’s selection.

Functionality

• Power Distribution: The transfer case splits the engine’s power output from the transmission and directs it to the front and rear axles.
• Gear Selection: The transfer case provides different gear ratios for high-range (H) and low-range (L) 4-wheel drive, allowing the driver to select the appropriate level of torque and control for various driving conditions.
• Mode Selection: The transfer case allows the driver to switch between 2-wheel drive (2H) for normal on-road driving and 4-wheel drive (4H or 4L) for off-road or slippery conditions.

Types of Transfer Cases

• Part-Time Transfer Case: Part-time transfer cases are designed for off-road use and should not be used on dry pavement. They rigidly lock the front and rear axles together, providing maximum traction but can cause driveline binding on high-traction surfaces.
• Full-Time Transfer Case: Full-time transfer cases include a center differential that allows the front and rear axles to rotate at different speeds, making them suitable for use on all surfaces, including dry pavement.

14. How Do I Handle Driveline Binding In 4 Wheel Drive?

Driveline binding occurs when the front and rear axles are locked and forced to rotate at the same speed on a high-traction surface, causing stress and potential damage to the drivetrain. Here’s how to handle driveline binding in your Toyota 4Runner:

Symptoms of Driveline Binding

• Difficult Shifting: Difficulty shifting into or out of 4WD.
• Vibrations: Noticeable vibrations, especially when turning.
• Jerky Movements: Jerky or binding movements when accelerating or decelerating.

Solutions for Driveline Binding

1. Avoid Using 4WD on Dry Pavement: The most effective way to prevent driveline binding is to avoid using 4WD on dry, high-traction surfaces. Use 4WD only when necessary, such as on snow, ice, gravel, or off-road trails.
2. Straighten the Wheels: If you experience driveline binding while turning, try straightening the wheels to relieve the tension in the drivetrain.
3. Shift into 2H: If you are on a surface where 4WD is not needed, shift back into 2H to disengage the front axle and eliminate driveline binding.
4. Slight Acceleration: Applying slight acceleration can sometimes help to relieve tension in the drivetrain and allow for smoother shifting.
5. Rocking the Vehicle: If you are stuck and experiencing driveline binding, try rocking the vehicle back and forth by shifting between Drive and Reverse to redistribute the tension in the drivetrain.

15. What Safety Precautions Should I Take When Using 4 Wheel Drive?

When using 4-wheel drive in your Toyota 4Runner, it’s essential to take certain safety precautions to ensure a safe and enjoyable driving experience.

• Understand Your Vehicle: Familiarize yourself with your vehicle’s 4WD system and its capabilities.
• Drive at Safe Speeds: Reduce your speed when driving in 4WD, especially on slippery surfaces.
• Avoid Abrupt Maneuvers: Avoid abrupt acceleration, braking, or steering, which can lead to loss of control.
• Be Aware of Terrain: Pay attention to the terrain and adjust your driving accordingly.
• Check Weather Conditions: Be aware of changing weather conditions and adjust your driving accordingly.
• Maintain Safe Distance: Maintain a safe following distance from other vehicles to allow for increased stopping distances.
• Use Seat Belts: Always wear seat belts, regardless of the driving conditions.
• Stay Sober: Never drive under the influence of alcohol or drugs.
• Carry Emergency Supplies: Carry emergency supplies, such as a first-aid kit, flashlight, and blankets, in case of unforeseen circumstances.
• Inform Someone of Your Plans: Let someone know your plans, including your route and estimated time of return.

16. How Does Weather Affect 4 Wheel Drive Usage?

Weather conditions significantly impact the usage and effectiveness of 4-wheel drive systems. Here’s how different weather conditions affect 4WD usage:

• Snow: According to the National Weather Service, snow can significantly reduce traction and increase the risk of accidents. 4WD provides improved traction and control on snow-covered roads, making it easier to maintain stability and avoid skidding.
• Ice: Ice can create extremely slippery conditions, making it challenging to maintain traction. 4WD can provide some benefit on icy surfaces.
• Rain: Rain can reduce traction and increase the risk of hydroplaning. 4WD can improve traction and reduce the risk of losing control on wet roads.
• Mud: Mud can create challenging off-road conditions, making it difficult to maintain forward momentum. 4WD, especially 4L, provides the necessary torque and traction to navigate through mud.
• Sand: Sand can create loose and shifting surfaces, making it difficult to maintain traction. 4WD provides improved traction on sandy surfaces, helping to prevent the vehicle from getting bogged down.

17. Can The Toyota 4Runner Be Driven In 4 Wheel Drive On The Highway?

Whether you can drive your Toyota 4Runner in 4-wheel drive on the highway depends on the type of 4WD system it has.

• Part-Time 4WD: According to Toyota’s owner’s manual, part-time 4WD systems should not be used on dry pavement or highways. These systems rigidly lock the front and rear axles together, which can cause driveline binding and damage on high-traction surfaces.
• Full-Time 4WD: Full-time 4WD systems can be used on all surfaces, including highways. These systems include a center differential that allows the front and rear axles to rotate at different speeds, reducing driveline stress and improving handling on various road conditions.

18. What Are The Benefits of Servicing The 4 Wheel Drive System At Millertoyota.Net?

Servicing your 4-wheel drive system at millertoyota.net offers several benefits, ensuring your vehicle remains in top condition and performs optimally in all driving conditions.

• Expert Technicians: Miller Toyota employs certified technicians with specialized training and experience in servicing Toyota 4WD systems.
• Genuine Toyota Parts: Miller Toyota uses only genuine Toyota parts, ensuring the highest quality and compatibility with your vehicle.
• Advanced Diagnostic Equipment: Miller Toyota is equipped with advanced diagnostic equipment to accurately diagnose and repair any issues with your 4WD system.
• Comprehensive Service: Miller Toyota offers comprehensive 4WD system service, including fluid checks, fluid changes, seal replacements, and component inspections.
• Warranty Protection: Servicing your 4WD system at Miller Toyota helps maintain your vehicle’s warranty coverage.
• Customer Satisfaction: Miller Toyota is committed to providing exceptional customer service and ensuring your satisfaction with every service visit.

19. What Are Some Warning Signs That Indicate A Problem With The 4 Wheel Drive System?

Several warning signs can indicate a problem with your Toyota 4Runner’s 4-wheel drive system, requiring prompt attention to prevent further damage.

• Unusual Noises: According to certified mechanics, unusual noises, such as grinding, clicking, or whining, coming from the transfer case or differentials can indicate internal damage or wear.
• Vibrations: Vibrations, especially when driving in 4WD, can indicate worn U-joints, drive shaft issues, or other drivetrain problems.
• Difficulty Shifting: Difficulty shifting into or out of 4WD can indicate a problem with the shift linkage, transfer case, or ADD system.
• 4WD Indicator Light Issues: If the 4WD indicator light does not illuminate or flashes continuously, it may indicate a problem with the 4WD system, such as a faulty sensor, actuator, or wiring issue.
• Fluid Leaks: Fluid leaks from the transfer case or differentials can indicate damaged seals or gaskets, leading to low fluid levels and potential component damage.
• Reduced Traction: A noticeable decrease in traction when driving in 4WD can indicate a problem with the transfer case, differentials, or other drivetrain components.

20. What Is The Cost of Repairing The 4 Wheel Drive System On A Toyota 4Runner?

The cost of repairing the 4-wheel drive system on a Toyota 4Runner can vary widely depending on the nature and extent of the problem.

• Minor Repairs: Minor repairs, such as fluid changes, seal replacements, or shift linkage adjustments, may cost between $100 and $300.
• Component Replacements: Replacing components, such as U-joints, drive shafts, or actuators, can cost between $300 and $1,000, depending on the part and labor involved.
• Transfer Case Repairs: Repairing the transfer case can range from $500 to $2,000, depending on the extent of the damage and whether a rebuild or replacement is necessary.
• Differential Repairs: Repairing the differentials can range from $500 to $2,500, depending on the extent of the damage and whether a rebuild or replacement is necessary.
• Major Overhauls: Major overhauls, such as replacing the transfer case or differentials, can cost between $2,000 and $5,000 or more, depending on the parts and labor involved.

For accurate estimate of repair costs for your Toyota 4Runner’s 4-wheel drive system, it’s best to get a professional diagnostic evaluation from a trusted service center.

Ready to enhance your Toyota 4Runner’s performance? Visit millertoyota.net today to explore our wide selection of Toyota vehicles and learn more about our expert 4WD service options. Contact us or visit our Boise location to schedule a consultation and experience the Miller Toyota difference!

Address: 208 N Maple Grove Rd, Boise, ID 83704, United States
Phone: +1 (208) 376-8888
Website: millertoyota.net

Frequently Asked Questions (FAQ)

1. Can I switch between 2H and 4H while driving?

Yes, you can typically switch between 2H and 4H while driving at moderate speeds (under 55 mph) in most Toyota 4Runner models.

2. Is it safe to drive in 4H on dry pavement?

It’s generally not recommended to drive in 4H on dry pavement for extended periods, as it can cause driveline binding and increased wear on components.

3. When should I use 4L (4 Low)?

Use 4L when you need maximum torque and traction for very challenging off-road conditions or situations where precise control at low speeds is essential.

4. How do I engage 4L in my Toyota 4Runner?

To engage 4L, stop the vehicle, shift to Neutral (N), and then shift the transfer case lever firmly into the L4 position.

5. What is driveline binding, and how can I avoid it?

Driveline binding occurs when the front and rear axles are locked and forced to rotate at the same speed on a high-traction surface. Avoid using 4WD on dry pavement to prevent it.

6. What maintenance is required for the 4WD system?

Regular fluid checks and changes, inspection of seals and gaskets, and lubrication of moving parts are essential for maintaining the 4WD system.

7. What are some warning signs of a problem with the 4WD system?

Unusual noises, vibrations, difficulty shifting, and 4WD indicator light issues can indicate a problem with the 4WD system.

8. Can I upgrade my Toyota 4Runner for better off-road performance?

Yes, aftermarket upgrades such as locking differentials, lift kits, skid plates, and performance tires can improve off-road performance.

9. How does traction control work with 4WD?

Traction control helps prevent wheel spin and maintain traction, particularly on slippery surfaces, enhancing the vehicle’s stability and control when combined with 4WD.

10. Where can I get my Toyota 4Runner’s 4WD system serviced?

You can get your Toyota 4Runner’s 4WD system serviced at millertoyota.net, where expert technicians use genuine Toyota parts and advanced diagnostic equipment to ensure optimal performance.