Toyota Highlander Check AWD System -Does the AWD System Really Need to Be There?

Drivers are paying close attention to Toyota Highlander Check AWD System , among other safety features.

Many claim it is significant, yet they are unaware of its function. Allow us to assist you with this content. Scroll down to view the specifics.

What Does the Toyota Highlander Check AWD System Mean?

There are error lights on the dashboard of every car model made today. Every indicator light and symbol has a purpose and a significance of its own.

Usually, it is color-coded into groups for hazards, damage alerts, and normalcy.

Verify that when a component, like the wheels or transmission shaft, fails, the Toyota Highlander’s all-wheel drive system (AWD) monitors and alerts the driver to the problem.

The driver can detect the signal that this inspection system emits in good time.

Like many previous technological advancements, it will emit an error signal through an instrument panel warning light. This message check is crucial since it aids in the early detection of anomalies.

Owing to the advantages it provides for drivers, the Toyota Highlander check AWD system has been included in numerous models and has undergone constant improvement over time, including the 2016–2019 model year.

The Advantages of the AWD System

All-wheel pressure, or AWD for short, is a four-wheel drive car that operates continuously without a “low” or “excessive” mode.

Since cars frequently have four wheels, the word “all” in AWD is confusing since many people mistake it for 4WD (four-wheel drive).

They are not the same, though; full-time 4-wheel drive better captures the essence of AWD.

Vehicles using AWD are two-wheel drive vehicles with engine power. Thanks to the electronic system’s computation, it moves to the wheels independently without the driver’s assistance.

The computer system calculates the power transfer ratio to the front and rear axles depending on the operating conditions.

Many automakers are adopting AWD drive systems as a trend, following their inclinations.

Since the full-time 4-wheel drive system is more effective on the road, SUV/crossover models like the Toyota Highlander, Hyundai Santa Fe, Mazda CX-5, Kia Sorento, and others are better suited.

What Impact Does It Have? 

  • The skilled technicians at Toyota Tech define AWD as a sophisticated drive system with a high degree of automation and technology.
  • The computer system’s accurate computation contributes to ensuring traction on all wheels.
  • EnhancesEnhancing the extra traction and traction control light makes driving safer and more stable for the vehicle to accelerate, bend, and travel on slick, snowy roads.
  • AWD will assign a mode and transmission ratio to each road segment to maximize operating performance.
  • The driver can automatically choose the degree of torque transfer between the front and rear wheels to offer the most authentic driving experience.

The Toyota Highlander’s Check AWD System’s Operation

This check system is a component of the car’s fault signal generator; thus, it will always be functional. After learning about anomalous indications in the AWD, it will turn on a warning light.

The lights’ interface may vary based on the make and model of the car. Specifically, the most popular layout is a dashboard frame that reads “Check AWD System.”

It will constantly glow, which is expected given that the test system is operational. When an error signal (a yellow triangle with an exclamation point within) starts to flash next to the frame, that’s when it truly matters.

Cars typically find moving, turning bends, etc., challenging for various reasons. When drivers try to figure out how to handle this, they need clarification.

However, if you notice flashing check engine lights, the owner will know that the drive shafts are experiencing issues.

Causes of AWD System Failure Highlander Toyota

A car’s AWD system frequently has the following problems:

  • Clutch: Improper installation, challenging to operate, partially closed, leaks oil droplets, and can burn gasoline.
  • Driveshaft: Broken, cracked, or deformed compared to its initial state.
  • Active bridge: oil seeps into drops and cracks.
  • Passive bridge: that is fractured or distorted.
  • Hubs: damaged or jammed.
  • Tire problems: tears, cracks, or blisters.

The System of Transmission

One of those pricey engine parts that wear out faster than any other is the car transmission; this problem eventually arises.

To extend the life of the components, you should address any issues as soon as possible because they might cause significant harm.

The automotive engine’s component provides support, continuously shifting through the gears to smoothly transfer power to the wheels.

But the gearbox ages more gradually the longer the automobile is driven.

Although the repairs are not costly, you might have to replace the AWD system if you need more time to finish them.

Both money and time are expended on this procedure. The symptoms can vary in intensity but can include the following:

  • There is an error light on.
  • Because of the viscous gearbox, oil seeps into drips.
  • Reduce your sensitivity
  • Uncut tape measure
  • The gear lever is trembling, and the automobile is trembling.
  • The car slips or changes gears
  • Unable to enter or difficult to enter
  • making odd noises as you go into the gear
  • A scent like burning ascends.
  • Loose connection 

Ignition On

One of the most essential structures inside the car is the ignition, a gas-powered inner combustion engine that operates loads like a high-voltage transformer.

The spark plug is also impacted and produces poor sparks if the ignition fails. In addition to fuel cap errors, it decreases engine performance, diminishes combustion efficiency, and causes emissions system failure.

This is a waypoint:

Unsuspected explosions, unusual smells, and black smoke:

malfunctioning spark plugs that can’t correctly clean fuel injection systems and will skew ignition timing. This fuel may fire if the exhaust temperature is too high.

Excessive fuel consumption:

 The issue prevented the fuel mixture from fully igniting. The owner will pay extra since the engine must ask more questions regarding the fuel pump to make up for it.

Engine jerking, vibration, and fluctuating speed:

The motor will lose its fire if the generated voltage is insufficient. As you accelerate, the car shakes and feels like it’s “stopping.”

Inaccurate Speed sensors

As a component of the electronic braking system, the vehicle speed sensor continuously measures engine speed to assist the driver in steering and preventing skidding.

A broken wire, a loose connector, or damaged sensor circuits can all result in speed sensor errors. Here are the leading causes of malfunctioning sensors:

ABS light: The instrument panel’s indicator light often illuminates to provide notification.

ABS sensors: When they malfunction, the vehicle will lock up the brakes, which will cause it to lose control.

TCS system: This system requires knowledge of the wheel’s actual speed. If there is a malfunction, the indication light will be on.

check Engine Light Alerts: In addition to the light being on, there’s a chance the instrument cluster’s speedometer won’t function.

Is the AWD gadget of the Toyota Highlander secure to use?

The development of science and generation suggests that cars have become more and more state-of-the-art.

The systems and parts of the automobile, but state-of-the-art, are restricted by a finite lifespan.

As a result, it is challenging to prevent mistakes and harm, particularly after extended use. The following primary color groups are typically found on car warning lights:

  • Red light: Alert for malfunctions or hazardous conditions in the vehicle
  • Yellow light: A fault notice on the car has to be looked at
  • Green light: The alert system is operational

The check engine light is on here. The yellow AWD system was not a significant issue at the time. You are free to resume your road excursion.

Because the full-time 4-wheel drive fault is a permanent error (i.e., an error persists until corrected), it does not imply that you can be subjective.

How Should the Toyota Check AWD System Light Be Handled If It Is On?

A car’s transmission system is made from several additives, including the engine, crankshaft, axle shaft, lively bridge, take hold of (if it has a guide transmission), wheels, etc.

One or more components might not be within the high-quality shape if the indication mild is on.

 Now is the time to conduct a comprehensive inspection to identify the appropriate area for repair.

But doing this is difficult, particularly for lone users. Making the task oneself can be problematic if you lack the necessary equipment, know-how, or experience.

Therefore, taking it to a service center for expert guidance is best.

How to Disable AWD

Every Toyota Highlander with AWD has a lock button. It would help if you pressed the controller to turn on the lock. It is an icon that appears to be suspended over the instrument panel.

This step disables the middle differential and distributes the torque evenly across all four wheels.

Occasionally, the machine can also shut down on its own. That happens while you interact with the anti-lock braking system (ABS) or when your car transfers at a pace higher than 25 mph.


What does the Check AWD System on a Toyota Highlander suggest?

One of the capabilities of the Toyota Highlander Check AWD System is that it continues a watch at the all-wheel power device and notifies the motive force if something is incorrect. On the dashboard, there’s a caution light that indicates it.

What are the advantages of the AWD system?
On slick or snowy roads, the AWD system will increase traction and improves traction control, making riding more secure and extra strong. For the most fulfilling driving revel in, it also allows automated torque switch among the front and back wheels.

How does the Check AWD System at the Toyota Highlander function?

The automobile’s on-board fault signal generator is called the Check AWD System. It turns on a caution mild on the dashboard while it finds irregularities inside the AWD machine. Depending on the automobile’s make and model, this light might also trade.

What could be the purpose of a Toyota Highlander’s ignition failure?

Spark plug troubles can result in terrible spark output, decreased engine overall performance, reduced combustion efficiency, and emissions gadget failure on the subject of ignition failure inside the Toyota Highlander.


We now have a complete knowledge of the issues with the Toyota Highlander’s check AWD system.

You should routinely inspect and maintain this system, which is crucial to the movement of automobiles, to guarantee safety.

Please leave a remark below if you have any quick queries. Reader questions will receive a prompt response from us.

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