The Toyota Highlander is a popular SUV known for its reliability, spaciousness, and technology. A central part of the Highlander’s technological interface is its infotainment screen. This screen provides access to navigation, audio controls, climate settings, and various vehicle settings. For new owners, or those encountering unexpected issues, understanding how to properly turn on the Highlander’s screen can be essential for enjoying the full functionality of your vehicle. This comprehensive guide will walk you through everything you need to know.
Understanding the Highlander Infotainment System
Before diving into troubleshooting, it’s important to have a basic understanding of the Highlander’s infotainment system. This system is the central hub for many of the vehicle’s functions and relies on both hardware and software to operate correctly. The screen itself is typically a touchscreen display, though some models may also include physical buttons and knobs for added control.
The infotainment system in modern vehicles is often integrated with other systems, such as the car’s computer, sensor network, and external services (like satellite radio or smartphone integration). Because of this complexity, a problem with the screen might not always be a screen problem. It could be an issue somewhere else in the vehicle’s electronics.
Key Components of the Infotainment System
The core components of the infotainment system include the display screen itself, the head unit (which houses the processing power), the vehicle’s wiring harness, and the software interface. Any of these could potentially be involved in a situation where the screen does not turn on as expected. The display screen, for example, may be damaged or defective, the head unit could be experiencing a software glitch or hardware failure, and the wiring harness might have a loose connection or broken wire.
Software and Firmware
Like any computer system, the Highlander’s infotainment system relies on software, also known as firmware. This software controls the functionality of the screen and allows it to interact with other systems in the vehicle. Sometimes, outdated or corrupted software can cause problems with the screen’s operation. Keeping the software updated is usually a good practice, but updating itself carries some risks that we will talk about later.
Troubleshooting Steps When Your Screen Doesn’t Turn On
If your Highlander screen isn’t turning on, don’t panic. Here’s a methodical approach to troubleshooting the problem. We’ll start with the simplest solutions and gradually move towards more complex ones.
Check the Basics: Power and Ignition
The first and most obvious step is to ensure that the vehicle’s ignition is turned on. The screen will not function if the car is completely off. Some Highlander models may have an “accessory” mode that allows the radio and other features to operate without the engine running, but the infotainment screen typically requires the ignition to be at least in the “on” position. Try turning the key (or pressing the start button) to the “on” position (without starting the engine) and see if the screen illuminates.
Also, double-check that the vehicle’s battery has sufficient charge. A weak battery can sometimes cause electronic systems to malfunction. If you suspect a battery issue, try jump-starting the car or having the battery tested by a professional.
Look for a Physical Power Button
Some Highlander models, particularly older ones, might have a physical power button or a dedicated screen on/off switch located on the dashboard or near the infotainment system. Examine the area around the screen carefully for any such button or switch. If you find one, make sure it is in the “on” position. It is easy to accidentally press a button when cleaning your dashboard.
Check the Dimmer Switch
Another common culprit is the dimmer switch, which controls the brightness of the dashboard lights, including the infotainment screen. If the dimmer switch is turned all the way down, it can make the screen appear to be off, even though it is still technically powered on. Try adjusting the dimmer switch to see if that brings the screen back to life. This control is typically located on the dashboard near the headlight controls.
Inspect the Fuses
A blown fuse can also prevent the screen from turning on. Locate the fuse box (usually under the dashboard or in the engine compartment) and consult your owner’s manual to identify the fuse that controls the infotainment system. Use a fuse tester or visually inspect the fuse to see if it is blown. If it is, replace it with a new fuse of the same amperage. Always replace a blown fuse with one of the same rating. Using a fuse with a higher amperage can damage the electrical system.
Finding the Right Fuse
Your owner’s manual is your best friend in this situation. It will have a detailed diagram of the fuse box(es) and specify which fuse corresponds to which system. The fuse for the infotainment system may be labeled as “Radio,” “Navigation,” “Display,” or something similar.
Replacing a Blown Fuse
Replacing a fuse is a simple task. First, turn off the ignition. Then, use a fuse puller (often included in the fuse box) or a pair of pliers to remove the blown fuse. Insert the new fuse of the correct amperage into the empty slot. If the new fuse blows immediately, it indicates a more serious electrical problem that requires professional attention.
Try a System Reset
Sometimes, the infotainment system can freeze or glitch, preventing the screen from turning on. In this case, a system reset might resolve the issue. The method for resetting the system varies depending on the Highlander model and year.
Using the Power Button (if available)
Some systems have a physical power button that can be used to perform a reset. Press and hold the power button for several seconds (usually 10-30 seconds) until the system restarts. Consult your owner’s manual for specific instructions.
Disconnecting the Battery
If there is no power button or if pressing the power button doesn’t work, you can try disconnecting the car’s battery for a few minutes. This will reset all of the vehicle’s electronic systems, including the infotainment system.
Caution: Disconnecting the battery will erase any stored settings, such as radio presets and navigation settings. You may also need to re-enter your radio security code after reconnecting the battery.
To disconnect the battery, first turn off the ignition and remove the key. Then, locate the battery (usually under the hood). Use a wrench to loosen the nut on the negative (-) terminal and carefully remove the cable. Wait for about 5-10 minutes, then reconnect the cable and tighten the nut. Start the car and see if the screen now turns on.
Check for Software Updates
An outdated or corrupted software version can sometimes cause the infotainment screen to malfunction. Check for available software updates for your Highlander’s infotainment system. You can usually do this through the system’s settings menu, if you can access it. Toyota also sometimes releases software updates that can be downloaded from their website and installed via USB drive. Instructions for this process should be available on the Toyota website or in your owner’s manual.
Updating via USB
To update via USB, you’ll typically need to download the update file from the Toyota website onto a USB drive. The USB drive should be formatted as FAT32. Insert the USB drive into the Highlander’s USB port and follow the on-screen instructions to install the update.
Caution: Do not turn off the vehicle or remove the USB drive during the update process. This could damage the infotainment system.
Inspect the Wiring
A loose or damaged wire can also prevent the screen from turning on. Inspect the wiring harness connected to the infotainment system for any visible signs of damage, such as frayed wires or loose connections. If you find any damage, you may need to repair or replace the wiring harness. This is generally best left to a qualified technician.
Consider Aftermarket Accessories
If you have recently installed any aftermarket accessories, such as a new stereo system or a backup camera, these could be interfering with the infotainment system. Try disconnecting the aftermarket accessories to see if that resolves the issue.
Check the Camera System
Modern infotainment systems often have their functionality integrated, meaning the navigation, radio, media, climate control, and camera systems are all connected through the head unit. The camera feed or camera system could be causing an issue that prevents the main screen from loading. If you have a camera system, check if it’s functioning correctly or displays any error messages. If there is an issue with the camera, resolving it might also fix the main screen problem.
When to Seek Professional Help
If you have tried all of the troubleshooting steps above and the screen still doesn’t turn on, it’s time to seek professional help. This indicates that there may be a more serious underlying problem that requires specialized diagnostic equipment and expertise to resolve.
Consult a Qualified Technician
Take your Highlander to a qualified mechanic or Toyota dealer. They will have the tools and knowledge to diagnose the problem accurately and recommend the appropriate repair. A mechanic can perform diagnostic tests, check the wiring, and inspect the infotainment system for any internal damage.
Don’t Attempt Advanced Repairs Yourself
Unless you have extensive experience working with automotive electronics, it’s best to avoid attempting advanced repairs yourself. This could potentially damage the system further and void your warranty. Working with car electronics can be complicated, and sometimes requires special knowledge to diagnose properly.
Preventative Maintenance
Taking steps to prevent problems with your Highlander’s infotainment system can save you time and money in the long run.
Keep Software Updated
Regularly check for software updates for your infotainment system and install them as soon as they become available. Software updates often include bug fixes and performance improvements that can help prevent problems.
Protect from Extreme Temperatures
Avoid exposing your Highlander’s infotainment system to extreme temperatures. Prolonged exposure to heat or cold can damage the screen and other electronic components. Park in the shade when possible, and use a sunshade to protect the dashboard from direct sunlight.
Handle with Care
Avoid pressing too hard on the touchscreen or using sharp objects that could scratch or damage the screen. Clean the screen regularly with a soft, damp cloth to remove dust and fingerprints.
Regular Battery Checks
Have your car’s battery checked regularly. A healthy battery is essential for the proper functioning of all of the vehicle’s electrical systems, including the infotainment system.
Conclusion
Turning on your Toyota Highlander’s screen should be a simple process. However, if you encounter problems, following the troubleshooting steps outlined in this guide can help you identify and resolve the issue. Remember to start with the basics, such as checking the power and ignition, and gradually move towards more complex solutions, such as checking the fuses and resetting the system. If all else fails, don’t hesitate to seek professional help from a qualified technician. By understanding the components of the infotainment system and taking preventative maintenance steps, you can ensure that your Highlander’s screen continues to function properly for years to come.
Why is my Toyota Highlander screen not turning on?
Several reasons could cause your Toyota Highlander screen to fail to power on. The most common issue is a simple software glitch, which can often be resolved with a system reset. Other potential culprits include a blown fuse in the infotainment system circuit, a loose or damaged wiring connection, or, in more severe cases, a malfunctioning head unit requiring professional repair or replacement.
Before seeking professional help, check the fuse box diagram (usually located in the owner’s manual or inside the fuse box cover) to identify the fuse related to the infotainment system. If the fuse is blown, replace it with a fuse of the same amperage. If the issue persists after replacing the fuse and attempting a system reset, it’s best to consult a qualified mechanic or Toyota dealership for further diagnosis and repair.
How do I perform a system reset on my Toyota Highlander screen?
The method for resetting your Toyota Highlander screen depends on the specific model year and infotainment system. A common method involves pressing and holding the power button (usually located on the screen or nearby) for 10-15 seconds until the system restarts. In some models, you may need to simultaneously press and hold the power button and the volume up button for a similar duration.
Alternatively, some newer Highlander models offer a reset option within the system’s settings menu. Navigate to the settings menu, typically accessible through an icon on the home screen, and look for options like “System Reset,” “Factory Reset,” or “Initialization.” Refer to your owner’s manual for precise instructions and any model-specific reset procedures, as performing the wrong reset can potentially erase personalized settings.
Where is the power button for the Toyota Highlander screen located?
The location of the power button for your Toyota Highlander screen varies slightly depending on the model year and the specific infotainment system installed. In many models, the power button is integrated directly into the screen itself, often located at the bottom or side edge. It’s usually a small, circular button with a power symbol.
If the power button isn’t on the screen, check the surrounding dashboard area, especially near the volume knob or other audio controls. Some Highlander models have a dedicated power button for the audio/infotainment system separate from the screen itself. Consulting your owner’s manual can provide a precise diagram and location for your particular vehicle.
Can I control the Toyota Highlander screen with voice commands?
Yes, many Toyota Highlander models are equipped with voice command functionality that allows you to control various aspects of the infotainment system, including the screen. The availability and sophistication of voice command features depend on the specific model year and trim level of your Highlander.
To activate voice control, typically you’ll press a button on the steering wheel, usually marked with a microphone symbol. The system will then prompt you with an audible cue, and you can issue commands to control navigation, audio playback, phone calls, and other compatible features. Consult your owner’s manual for a complete list of available voice commands and how to use them effectively.
What if the Toyota Highlander screen is dim or too bright?
Adjusting the screen brightness on your Toyota Highlander is usually a straightforward process. Most models have a dedicated brightness setting within the infotainment system’s display or settings menu. Navigate to the menu, find the “Display” or “Brightness” option, and adjust the slider or use the plus and minus buttons to increase or decrease the screen’s luminance.
Many Highlanders also feature an automatic brightness adjustment based on ambient light conditions. Check for a setting labeled “Auto Brightness” or “Automatic Dimming” and ensure it’s enabled if you prefer the screen to automatically adjust its brightness based on the surrounding environment. If the screen remains abnormally dim or bright despite adjustments, there might be an issue with the ambient light sensor, requiring professional attention.
How do I update the software on my Toyota Highlander screen?
Keeping the software on your Toyota Highlander screen up-to-date is essential for optimal performance, bug fixes, and access to the latest features. The update process typically involves connecting to a Wi-Fi network and navigating to the system’s settings menu, where you should find an option for “Software Update” or “System Update.”
If a software update is available, the system will prompt you to download and install it. Ensure that the vehicle is parked in a safe location and that the engine is running or the battery is adequately charged during the update process, as interrupting the update can potentially cause issues. In some cases, updates may also be performed by a Toyota dealership during routine maintenance services.
Does the Toyota Highlander screen support Apple CarPlay and Android Auto?
Whether your Toyota Highlander screen supports Apple CarPlay and Android Auto depends on the model year and trim level. Newer models, generally from 2020 onwards, are typically equipped with both Apple CarPlay and Android Auto integration, allowing you to seamlessly connect your smartphone to the infotainment system.
To use Apple CarPlay or Android Auto, connect your compatible smartphone to the USB port designated for smartphone integration (usually indicated by a CarPlay or Android Auto symbol). The system should automatically detect your phone and prompt you to launch the corresponding app. If it doesn’t, navigate to the system’s settings menu and ensure that Apple CarPlay or Android Auto is enabled and that your phone is granted the necessary permissions.