To fix an AWD system malfunction on a Lexus, use an OBD-II scanner to read the fault codes from the vehicle’s computer. This will help diagnose the issue and determine the root cause of the malfunction.

How to Fix Awd System Malfunction Lexus: Step-by-Step Guide




Common Awd System Malfunctions

Warning Lights And Error Codes

When you encounter an AWD system malfunction in your Lexus, warning lights may illuminate on your dashboard indicating an issue. These warning lights could include the AWD system malfunction light, ABS, or traction control warning light. Additionally, your Lexus may generate error codes that can be accessed and interpreted using an OBD-II scanner.

Loss Of Power And Traction

An AWD system malfunction can result in a noticeable loss of power and traction, especially during acceleration or when driving in slippery conditions. This can lead to difficulty maintaining control of your vehicle, potentially compromising safety.

How to Fix Awd System Malfunction Lexus: Step-by-Step Guide




Identifying The Cause


The cause of the AWD system malfunction in a Lexus could be a fault in the electronic engine control system, electronic throttle control system, or electronic automatic transmission control system. To identify the cause, use an OBD-II scanner to read the fault codes from the vehicle’s computer.


Have the vehicle inspected by a Lexus dealer as soon as possible.

Diagnostic Trouble Codes

When dealing with an AWD system malfunction in your Lexus, one of the first steps to identifying the cause is to check for any diagnostic trouble codes (DTCs). These codes can provide valuable information about the specific component or system that is experiencing an issue.

To retrieve the DTCs, you will need to use an OBD-II scanner. This device can be connected to your Lexus’ onboard computer system, allowing it to read and display any stored codes. Once you have the codes, you can use them as a starting point for further investigation.

Physical Inspection Of Components

In addition to checking for diagnostic trouble codes, a physical inspection of the AWD system components is crucial for identifying the cause of the malfunction. This inspection involves visually examining each component for any signs of damage, wear, or malfunction.

Start by inspecting the drivetrain components, including the transfer case, differentials, and driveshafts. Look for any leaks, cracks, or loose connections. Pay close attention to the condition of the seals and gaskets, as they can often be a source of issues.

Next, inspect the sensors and wiring harnesses. Check for any frayed or damaged wires, loose connections, or signs of corrosion. These small electrical components play a vital role in the proper functioning of the AWD system, so any issues should be addressed promptly.

Finally, don’t forget to inspect the tires and wheel bearings. Uneven tire wear or worn-out wheel bearings can cause the AWD system to malfunction. Make sure the tires are properly inflated and balanced, and check for any signs of excessive wear or damage.

By conducting a thorough physical inspection of all AWD system components, you can increase your chances of identifying the underlying cause of the malfunction. This information will then help you determine the appropriate steps for fixing the issue.

Fixing Awd System Malfunctions

If you’re experiencing an AWD system malfunction in your Lexus, it’s important to address the issue promptly to ensure the safety and performance of your vehicle. Here are some steps you can take to fix AWD system malfunctions:

Resetting The System

One of the first steps you can take is to reset the AWD system. To do this, follow these simple steps:

  1. Turn off the ignition and remove the key from the ignition switch.
  2. Wait for about 30 seconds before reinserting the key and starting the vehicle.
  3. If the AWD system malfunction light is still on after the reset, it’s recommended to move on to the next troubleshooting steps.

Checking And Replacing Faulty Sensors

Faulty sensors can often cause AWD system malfunctions. To check for faulty sensors, follow these steps:

  1. Connect an OBD-II scanner to your vehicle’s computer and read the fault codes.
  2. Identify the specific sensors that are causing the AWD system malfunction.
  3. Replace the faulty sensors with new ones. Make sure to follow the manufacturer’s instructions for proper installation.

Repairing Damaged Wiring

Damaged wiring can also lead to AWD system malfunctions. To repair damaged wiring, follow these steps:

  1. Inspect the wiring harnesses connected to the AWD system components.
  2. Look for any signs of frayed or broken wires.
  3. Repair or replace the damaged wiring as necessary.

Performing Software Updates

Software updates can often resolve AWD system malfunctions. To perform a software update on your Lexus, follow these steps:

  1. Contact your nearest Lexus dealership or authorized service center.
  2. Inform them about the AWD system malfunction and request a software update.
  3. Bring your vehicle to the dealership or service center for the software update.

Replacing Malfunctioning Components

If all else fails, you may need to replace malfunctioning components to fix the AWD system malfunction. Here are the steps to follow:

  1. Identify the specific components causing the issue.
  2. Order replacement parts from a reliable source or through your Lexus dealership.
  3. Follow the manufacturer’s instructions for properly replacing the malfunctioning components.

By following these steps, you can effectively fix AWD system malfunctions in your Lexus, ensuring optimal performance and safety on the road.



Preventive Maintenance

Ensuring the proper functioning of your AWD system in your Lexus is crucial. Preventive maintenance plays a vital role in keeping the system in top condition, preventing malfunction and costly repairs down the line. Here are some key preventive maintenance practices to keep your AWD system functioning optimally:

Regular Servicing And Inspections

Regular servicing by qualified technicians is essential to maintain the AWD system. Scheduled routine inspections can detect any potential issues before they escalate, ensuring the AWD system is well-maintained.

Keeping The System Clean And Debris-free

Ensuring the AWD system is kept clean and free from debris is crucial. This includes regular cleaning of components, such as the driveshaft and differentials, to prevent the accumulation of dirt and debris that could potentially disrupt the system’s functionality.

Consulting A Professional

When it comes to fixing an AWD system malfunction in your Lexus, sometimes it’s best to leave it to the experts. While there are certain troubleshooting steps you can take on your own, seeking professional help ensures that the issue is properly diagnosed and resolved, avoiding any further damage to your vehicle.

When To Seek Professional Help

If you have tried basic troubleshooting steps like checking for loose connections or resetting the system, but the AWD system malfunction persists, it’s time to consult a professional. Additionally, if you notice any of the following signs, it’s important to get your Lexus to a qualified technician or dealership as soon as possible:

  • Warning lights or error messages related to the AWD system
  • Loss of power or traction
  • Unusual noises coming from the system
  • Difficulty engaging or disengaging the AWD mode

Finding A Qualified Technician Or Dealership

When it comes to finding a qualified technician to fix your Lexus AWD system malfunction, it’s essential to do your research. Here are a few steps to help you find the right professional:

  1. Ask for recommendations from friends, family, or other Lexus owners. They may have had similar issues and can provide insights on reputable technicians or dealerships.
  2. Check online review platforms and forums dedicated to Lexus owners. Look for positive reviews and feedback about the technician’s expertise and customer service.
  3. Contact your local Lexus dealership and inquire about their experienced technicians who specialize in AWD system repairs.
  4. Verify certifications and qualifications of the technician or dealership to ensure they have the necessary expertise to diagnose and fix the AWD system malfunction.

Remember to schedule an appointment with the technician or dealership as soon as possible to prevent any further complications or damage to your vehicle.

By consulting a professional and finding a qualified technician or dealership, you can have peace of mind knowing that your Lexus AWD system malfunction will be accurately diagnosed and repaired, getting you back on the road safely.

Frequently Asked Questions Of How To Fix Awd System Malfunction Lexus


What Does Awd System Malfunction Mean?


An AWD system malfunction means your vehicle’s all-wheel-drive is not working properly, switching to two-wheel drive. Use an OBD-II scanner to read fault codes for diagnosis. Have your vehicle serviced immediately when the AWD Malfunction Service Required warning displays.


What Is Awd Malfunction Service Required?


AWD malfunction service required means that the all-wheel-drive system in your vehicle is not working properly and has switched to two-wheel-drive mode. To diagnose the problem, use an OBD-II scanner to read the fault codes from your vehicle’s computer. Have your vehicle serviced as soon as possible when this warning displays.


What Is The System Malfunction On A Lexus?


An AWD system malfunction on a Lexus means that the vehicle’s all-wheel-drive system is not working properly and has switched to two-wheel-drive mode. This can be diagnosed using an OBD-II scanner to read the fault codes from the vehicle’s computer.


It is important to have your vehicle serviced as soon as possible when this warning displays.


What Is Awd System In Lexus?


The AWD system in Lexus distributes power to all wheels, ensuring better traction and stability. If malfunctioning, it defaults to two-wheel drive mode, requiring prompt service to rectify the issue. Use an OBD-II scanner to diagnose fault codes.




Addressing and fixing AWD system malfunctions in your Lexus is crucial for maintaining optimal performance and safety. By using an OBD-II scanner to diagnose fault codes and promptly seeking professional servicing when warning lights appear, you can effectively address and rectify any malfunction affecting your vehicle’s all-wheel-drive system.


Prioritizing these preventative and corrective measures will ensure your Lexus operates at its best.