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Toyota Pre-Collision System Malfunction Reset: Ultimate Troubleshooting Guide


The Toyota Pre-Collision System Malfunction can be reset by following a specific process. The Toyota Pre-Collision System (PCS) is an advanced safety feature designed to help prevent or mitigate collisions.

However, like any electronic system, it can sometimes experience malfunctions. When the PCS in a Toyota vehicle malfunctions, it may display a warning light or message indicating the issue. Fortunately, there is a way to reset the system. The correct procedure can clear the error message and restore the PCS functionality.

We will guide you in resetting the Toyota Pre-Collision System Malfunction and ensuring your vehicle is back in optimal safety.

Understanding The System

Understanding the Toyota Pre-Collision System is essential to appreciating its benefits. This advanced safety feature is designed to prevent or minimize collisions by detecting potential hazards in front of the vehicle. The system combines millimeter-wave radar and front camera technology to monitor the road ahead for obstacles, pedestrians, or other vehicles.

A malfunction in the system can occur due to various reasons, such as sensor calibration issues, electronic component failures, or software glitches. Common signs of a malfunctioning Pre-Collision System include false alarms, warning lights or messages on the dashboard, or the system failing to activate when it should.

If you suspect a malfunction, it is crucial to have the system reset and recalibrated by a certified Toyota technician. Attempting to reset the system yourself may cause further complications. Regular maintenance and keeping the system clean from debris and obstructions can also help prevent malfunctions. Keeping a close eye on the system’s performance and addressing any issues promptly ensures the Pre-Collision System continues to function optimally, providing an additional layer of safety on the road.

Initial Checks

Initial Checks

Inspect Sensors and Cameras: The first step in resetting the Toyota Pre-Collision System Malfunction is to inspect the sensors and cameras. Check for any damage or obstructions affecting the system’s functionality. Clean the sensors and cameras if necessary, as dirt or debris can interfere with their performance.

Dashboard Warning Lights Analysis: Analyze the dashboard warning lights related to the Pre-Collision System Malfunction. These lights provide important indications about the system’s status. Please pay attention to any specific error codes or messages displayed on the dashboard, as they can help diagnose the issue and guide the reset process.

Verifying Software Updates: Ensure that your Toyota vehicle’s software is current. Visit the official Toyota website and check for available software updates for your vehicle model. If an update is available, follow the instructions to download and install it. Software updates often include bug fixes and enhancements that can resolve system malfunctions.

Diagnostic Approach

When diagnosing a malfunction in the Toyota Pre-Collision System, a strategic approach needs to be adopted. One effective method is to utilize the On-Board Diagnostics (OBD-II) system. This system provides valuable trouble codes that can indicate the root cause of the malfunction. Interpreting these trouble codes accurately is crucial for an efficient diagnosis. Another approach is a manual inspection methodology where a thorough physical inspection of the system components is conducted.

This includes inspecting sensors, connectors, and wiring for any damages or loose connections. Visual checks for any physical obstructions, such as dirt or debris, should also be performed. By following these diagnostic approaches, technicians can efficiently identify and resolve any malfunction in the Toyota Pre-Collision System.

Soft Reset Procedure

You can perform a soft reset procedure to reset the Toyota Pre-Collision System malfunction. This reset is often recommended as a first step when encountering any issues or warnings related to the pre-collision system.

  1. Start by turning off the vehicle and removing the key from the ignition.
  2. Wait at least 10 seconds to ensure all systems are fully powered down.
  3. Reinsert the key and turn the vehicle on without starting the engine.
  4. Press and hold the pre-collision system off button. This button is typically located near the rearview mirror or center console.
  5. Continue holding the button for at least 3 seconds.
  6. Release the button and wait for the pre-collision system warning light to turn off.
  7. Once the light has turned off, the soft reset procedure is complete.

If the issue persists or there are any other concerns, it is recommended to consult the vehicle’s owner’s manual or contact a certified Toyota technician for further assistance.

Hard Reset Tactics


  • Ensure a stable power source: To perform a hard reset successfully, it is crucial to have a reliable power source. Connect your vehicle to a power outlet or ensure the battery is fully charged.
  • Access the system reset procedure: Consult your Toyota vehicle’s user manual or contact your local Toyota dealership to obtain specific instructions for accessing the pre-collision system reset procedure.

A hard reset is a process that helps resolve pre-collision system malfunction issues. Follow these steps to perform a hard reset:

  1. Ignition: Turn the ignition switch to the “ON” position.
  2. Navigation menu: Access the navigation menu on the infotainment screen.
  3. Select “Settings”: Navigate to the “Settings” option.
  4. Choose “System”: Select “System” from the settings menu.
  5. Select “Master Reset”: Choose the “Master Reset” option to initiate the arduous reset process.
  6. Confirmation: Confirm the reset action and wait for the system to reset.
  7. Test functionality: After the reset, verify that the pre-collision system functions correctly by performing a test drive and observing its performance.

When To Seek A Mechanic

If you experience a malfunction with your Toyota Pre-Collision System, it is important to assess the situation to determine if professional assistance is needed.

First, try turning your vehicle off and then back on again. This simple reset may resolve the issue.

If the problem persists, consulting a qualified Toyota technician is recommended. They have the expertise to diagnose and repair complex electronic systems.

Look for a mechanic with specific training and experience working on Toyota vehicles. They should be familiar with the Pre-Collision System and have access to the necessary tools and diagnostic equipment.

Consider seeking referrals from friends and family or checking online reviews to find a reputable mechanic near you.

Don’t delay seeking professional help if your Pre-Collision System is malfunctioning. Seeking assistance from a qualified Toyota technician will ensure the issue is properly diagnosed and resolved.

Cost Estimation And Warranties

The cost estimation for repairing a Toyota Pre-Collision System Malfunction can vary depending on several factors. The expected costs for repair services generally include diagnostic fees, replacement parts, labor charges, and taxes. The severity of the malfunction and the specific model of the Toyota vehicle may also influence the total cost.

It is important to note that warranty and insurance considerations can significantly affect the overall expenses. If the manufacturer’s warranty still covers your Toyota vehicle, you may be able to get the malfunction reset or repaired without incurring any out-of-pocket costs. However, if the warranty has expired or the malfunction is not covered, you may need to explore other options, such as purchasing an extended warranty or contacting your insurance provider to check if the repairs are covered under your policy.

Costs for Repair Services
Diagnostic fees
Replacement parts
Labor charges

Remember to consult with a certified Toyota dealership or a trusted mechanic to get an accurate cost estimation for resetting or repairing the pre-collision system malfunction in your Toyota vehicle.

Routine Pre-collision System Care

Proper routine care ensures that your Toyota’s pre-collision system functions optimally. Adhering to the recommended maintenance schedule can prevent potential malfunctions and keep your vehicle safe on the road.

Service Frequency
Regular inspections Every 6 months or 5,000 miles
Software updates As recommended by the manufacturer
Sensor cleaning Every 12 months or 10,000 miles
System recalibration Every 24 months or 20,000 miles

Performing DIY maintenance can also contribute to the longevity of your pre-collision system. Here are some important tips:

  • Keep the sensor area clean and free from debris
  • Check for any visible damage or loose connections regularly
  • Ensure the system is properly calibrated after any repairs or modifications
  • Stay up-to-date with software updates provided by Toyota

Remember, neglecting routine maintenance can lead to pre-collision system malfunctions, compromising your safety on the road. Follow the recommended maintenance schedule and implement DIY care tips to keep your Toyota’s pre-collision system in shape.

Preventive Measures

To prevent a Toyota Pre-Collision System malfunction, there are some key driving habits you should follow. Firstly, it is important to maintain a safe distance from the car in front to minimize unnecessary stress on the system. Additionally, try to avoid sudden acceleration or braking, as this can cause the system to become overloaded. Another preventive measure is ensuring the sensors are regularly calibrated and cleaned. This ensures that the system functions optimally and reduces the risk of malfunctions. Regular maintenance and servicing of the system is also crucial to address any potential issues before they escalate. Following these driving habits and regularly maintaining the system can significantly reduce the chances of a Toyota Pre-Collision System malfunction.

Frequently Asked Questions Of Toyota Pre-collision System Malfunction Reset

How Do I Reset The Toyota Pre-collision System Malfunction?

To reset the Toyota Pre-Collision System Malfunction, follow these steps:
1. Turn off the engine and remove the key from the ignition. 2. Disconnect the battery for about 15 minutes. 3. Reconnect the battery and start the vehicle. 4. Drive the car for a few minutes to allow the system to recalibrate. 5. The Pre-Collision System Malfunction should now be reset.

Why Is My Toyota Pre-collision System Malfunctioning?

There are several possible reasons for your Toyota Pre-Collision System malfunctioning, such as:
1. Dirty sensors that need to be cleaned. 2. Faulty wiring or loose connections. 3. Low battery voltage affecting system performance. 4. Damaged or blocked sensors due to an accident or debris. 5. Malfunctioning control unit or software glitch. Contact your local Toyota dealer for a proper diagnosis and repair.

Can I Fix The Toyota Pre-collision System Malfunction Myself?

While it’s possible to reset the Toyota Pre-Collision System Malfunction by following certain steps, it is generally recommended to have it diagnosed and fixed by a trained professional. Trying to fix it yourself may lead to improper repairs or further damage to the system, affecting its performance and safety features.

Seek assistance from a trusted Toyota service center or technician.

How Much Does It Cost To Repair The Toyota Pre-collision System?

The cost of repairing the Toyota Pre-Collision System may vary depending on the specific issue and the model of your vehicle. Diagnostic fees, replacement parts, and labor charges can influence the final cost. It is best to contact your local Toyota dealer or authorized service center for an accurate estimate based on your vehicle’s needs.


Understanding how to reset the Toyota Pre-Collision System malfunction is crucial for safe and efficient driving. Following the simple steps outlined in this blog post, you can quickly resolve errors and ensure your vehicle’s advanced safety features function optimally.

Don’t let a malfunctioning system compromise your safety – take action and reset it today. Drive confidently, knowing your Toyota is equipped to mitigate potential collisions and protect you on the road.

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