How to Properly Use the 4x4 System in a Toyota Hilux & Fortuner

A Beginner's Guide to the Toyota Hilux & Fortuner 4x4 System

The Toyota Hilux and Fortuner are legendary for their toughness and off-road capability, largely thanks to their robust 4x4 systems. However, many owners, especially those new to four-wheel drive vehicles, are often unsure about how to use the different modes—2H, 4H, and 4L—correctly. Using the wrong mode at the wrong time can not only leave you stuck, but can also cause serious and expensive damage to your vehicle's drivetrain.

This guide will demystify your Toyota's 4x4 system. We'll explain in simple terms what each mode does, exactly when and how to use it, and the critical mistakes you must avoid to keep your truck running strong for years to come.

Understanding the Three 4x4 Modes

Most Hilux and Fortuner models use a "part-time" 4WD system, which means you can choose when to send power to all four wheels. Here’s what each setting on your dial or lever does:

• 2H (Two-Wheel Drive High Range): This is your everyday driving mode. Power is sent only to the rear wheels. You should be in 2H for all normal driving on dry, paved roads. This provides the best fuel economy and prevents unnecessary wear on the 4x4 components.
• 4H (Four-Wheel Drive High Range): This mode engages all four wheels, splitting power between the front and rear axles. 4H is for situations where you need extra traction on loose or slippery surfaces, such as gravel roads, snow, ice, or light mud.
• 4L (Four-Wheel Drive Low Range): This is your ultimate off-road gear. 4L engages all four wheels but also uses a different gear ratio in the transfer case to dramatically multiply the engine's torque. This mode is for extreme, low-speed situations like climbing steep and rocky inclines, driving through deep sand or mud, or descending a treacherous hill.

Critical Warning: Never use 4H or 4L on dry, high-traction surfaces like asphalt or concrete. Doing so can cause "drivetrain binding," which can lead to severe damage to your axles, differentials, and transfer case.

How to Switch Between Modes Correctly

Shifting between the different 4x4 modes requires following a specific procedure to avoid damaging your vehicle.

Shifting from 2H to 4H (and back)

This is the easiest shift and can be done "on the fly." You can engage 4H from 2H while the vehicle is moving at speeds up to about 80 km/h (50 mph). Simply turn the selector dial or move the lever to 4H. You should see the 4WD indicator light on your dashboard turn on. To switch back to 2H, just reverse the process while driving.

Shifting into 4L (for extreme off-roading)

Engaging 4L requires a specific sequence because you are changing the physical gears in the transfer case.

1. Bring the vehicle to a complete stop.
2. Shift the main transmission into Neutral (N).
3. Now, firmly turn the selector dial or move the lever to the 4L position. You may hear a clunk as the gears engage, which is normal.
4. Wait for the 4L indicator light to illuminate and stop flashing on your dashboard.
5. Shift the main transmission back into Drive (D) or first gear and proceed slowly.

To get out of 4L, you must follow the exact same process in reverse: stop completely, shift to Neutral, move the selector to 4H, then shift back into Drive.

Conclusion: Use the Right Tool for the Job

The 4x4 system in your Toyota Hilux or Fortuner is an incredible tool that vastly increases its capability and safety in challenging conditions. By understanding what each mode is designed for and following the correct procedures to engage them, you can confidently tackle any terrain without risking damage to your vehicle. Remember the golden rule: 4x4 is for when you need extra grip; 2H is for everything else.