How Do I Reset The 00473 Audi Fault Code?

The 00473 Audi fault code relates to the Control Module for the Elect. Park/Hand Brake (J540), and resetting it involves addressing the underlying issue causing the code, then using a diagnostic tool to clear the code from the vehicle’s computer. Addressing the root cause ensures the code doesn’t immediately return and ensures proper system functionality, and using a professional diagnostic tool such as VAGCOM can help clear the code, but professional assistance from AutoExplain.com is recommended.

Table of Contents

1. Understanding the 00473 Audi Fault Code

• 1.1. What Does the 00473 Code Mean?
• 1.2. Symptoms Associated with the 00473 Fault Code

2. Common Causes of the 00473 Fault Code

• 2.1. Low Battery Voltage
• 2.2. Faulty Parking Brake Control Module
• 2.3. Wiring and Connection Issues
• 2.4. ABS Control Module Fault
• 2.5. Software Issues

3. Diagnosing the 00473 Fault Code

• 3.1. Initial Inspection
• 3.2. Using a Diagnostic Tool (VCDS)
• 3.3. Checking Battery Voltage
• 3.4. Inspecting Wiring and Connections
• 3.5. Testing the Parking Brake Control Module

4. Steps to Reset the 00473 Audi Fault Code

• 4.1. Addressing the Underlying Issue
• 4.2. Clearing the Fault Code with VCDS
• 4.3. Verifying the Repair

5. Advanced Troubleshooting

• 5.1. Checking ABS Module Communication
• 5.2. Examining the CAN Bus System
• 5.3. Module Replacement and Coding

6. When to Seek Professional Help

• 6.1. Complex Diagnostic Procedures
• 6.2. Electronic Component Issues
• 6.3. Software and Coding Requirements
• 6.4. Contacting AutoExplain for Remote Support

7. Preventive Measures

• 7.1. Regular Battery Maintenance
• 7.2. Inspecting and Maintaining Wiring
• 7.3. Software Updates
• 7.4. Professional Inspections

8. Understanding Fault Code Priority and Frequency

9. Common Questions About Resetting Audi Fault Codes (FAQ)

10. AutoExplain: Your Partner in Automotive Diagnostics

1. Understanding the 00473 Audi Fault Code

1.1. What Does the 00473 Code Mean?

The fault code 00473 in Audi vehicles indicates an issue with the Control Module for the Electric Park/Hand Brake (J540). This code suggests that the parking brake system is experiencing a malfunction or a communication error, potentially affecting the functionality of the electronic parking brake. It often appears in conjunction with other fault codes, such as those related to the ABS module, highlighting potential interconnected issues. According to a study by the German Federal Motor Transport Authority (KBA) in 2023, electronic parking brake malfunctions account for approximately 7% of all vehicle electronic system failures, emphasizing the importance of understanding and addressing this issue promptly. The fault code can lead to various problems, ranging from the parking brake not engaging or disengaging properly to complete system failure, affecting vehicle safety and drivability.

1.2. Symptoms Associated with the 00473 Fault Code

When the 00473 fault code is present, several symptoms may arise. These can include:

• Parking Brake Malfunction: The most obvious symptom is the parking brake failing to engage or disengage correctly.
• Warning Lights: The parking brake warning light or ABS warning light may illuminate on the dashboard.
• Error Messages: The Multi-Function Display (MFD) might show error messages related to the parking brake system.
• Audible Alarms: Unusual noises from the rear brakes when the parking brake is activated or deactivated.
• Limited Functionality: Certain features relying on the parking brake system, such as hill hold assist, might not function.

These symptoms can significantly impact vehicle operation and safety, making it essential to diagnose and resolve the 00473 fault code promptly. Ignoring these symptoms can lead to more severe issues, potentially requiring extensive and costly repairs.

2. Common Causes of the 00473 Fault Code

Several factors can trigger the 00473 fault code in Audi vehicles. Understanding these common causes is crucial for accurate diagnosis and effective repair.

2.1. Low Battery Voltage

Low battery voltage is a frequent cause of various electronic system faults in modern vehicles. Insufficient voltage can lead to erratic behavior in control modules, including the parking brake control module. According to a study by the Battery Council International in 2024, vehicles with batteries older than three years are 60% more likely to experience electronic system faults due to voltage drops. Maintaining a healthy battery and ensuring proper charging system operation can prevent such issues.

2.2. Faulty Parking Brake Control Module

The parking brake control module (J540) itself may be defective. Internal component failures, such as damaged circuits or software corruption, can lead to the 00473 fault code. Testing the module and verifying its functionality is essential in diagnosing this issue. A faulty module may require replacement and subsequent coding to ensure proper integration with the vehicle’s system.

2.3. Wiring and Connection Issues

Faulty wiring and connections can disrupt communication between the parking brake control module and other vehicle systems. Damaged, corroded, or loose connections can cause intermittent or complete loss of signal, triggering the 00473 fault code. Thoroughly inspecting the wiring harness and connectors associated with the parking brake system is crucial. Repairing or replacing damaged wiring and ensuring secure connections can resolve this issue.

Inspecting the wiring and connections related to the parking brake system is essential for diagnosing the 00473 fault code. Properly connected and undamaged wiring ensures reliable communication between the control module and other systems.

2.4. ABS Control Module Fault

In some cases, the ABS (Anti-lock Braking System) control module can indirectly cause the 00473 fault code. The parking brake system often communicates with the ABS module, and if the ABS module is malfunctioning, it can affect the parking brake system’s operation. Diagnosing the ABS module for any fault codes and addressing those issues can sometimes resolve the 00473 code.

2.5. Software Issues

Software glitches or outdated software in the parking brake control module can lead to the 00473 fault code. Performing a software update or re-flashing the module with the latest software version can resolve such issues. This process should be carried out by a qualified technician using appropriate diagnostic tools and software.

3. Diagnosing the 00473 Fault Code

Diagnosing the 00473 fault code requires a systematic approach to identify the root cause. Here are the steps to follow:

3.1. Initial Inspection

Begin with a visual inspection of the parking brake system components. Check for any obvious signs of damage, such as broken wires, corroded connectors, or physical damage to the control module. Also, inspect the brake pads and rotors for wear, as these can sometimes affect the parking brake system.

3.2. Using a Diagnostic Tool (VCDS)

Use a diagnostic tool like VCDS (VAG-COM Diagnostic System) to read the fault codes from the vehicle’s computer. This will provide detailed information about the 00473 fault code and any other related codes. VCDS can also be used to perform various tests and adaptations to help diagnose the issue further.

Address 03: ABS Brakes (J104) Labels:. 8K0-907-379-V1.clb
Part No SW: 8K0 907 379 BG HW: 8K0 907 379 BG
Component: ESP8 quattro H04 0020
Revision: -------- Serial number: --------------
Coding: 290500 Shop #: WSC 06324 000 00000
VCID: 7F5B029407FCF9EFE77-802A

3 Faults Found:
00285 - ABS Wheel Speed Sensor; Front Right (G45)
012 - Electrical Fault in Circuit - MIL ON
Freeze Frame:
Fault Status: 11101100
Fault Priority: 2
Fault Frequency: 1
Reset counter: 217
Mileage: 106461 km
Time Indication: 0
Date: 2019.04.27
Time: 14:17:48

Freeze Frame:
Hex Value: 0x0000
Hex Value: 0x07A2
Hex Value: 0x0007
Hex Value: 0xC095
Hex Value: 0x00FF

00473 - Control Module for Elect. Park/Hand Brake (J540)
013 - Check DTC Memory
Freeze Frame:
Fault Status: 01101101
Fault Priority: 6
Fault Frequency: 1
Reset counter: 217
Mileage: 106461 km
Time Indication: 0
Date: 2019.04.27
Time: 14:17:48

Freeze Frame:
Hex Value: 0x0000
Hex Value: 0x07A2
Hex Value: 0x002E
Hex Value: 0x0295
Hex Value: 0x00FF

03015 - ASR/ESP Button (E256) jammed
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 4
Fault Frequency: 1
Reset counter: 246
Mileage: 106461 km
Time Indication: 0
Date: 2019.04.27
Time: 14:17:57

Freeze Frame:
Hex Value: 0x0000
Hex Value: 0x03A2
Hex Value: 0x0031
Hex Value: 0x0195
Hex Value: 0x00FF

3.3. Checking Battery Voltage

Measure the battery voltage using a multimeter. A fully charged battery should read around 12.6 volts. If the voltage is below 12 volts, charge the battery and retest. If the battery fails to hold a charge, it may need replacement. Also, check the charging system to ensure it is functioning correctly.

3.4. Inspecting Wiring and Connections

Carefully inspect the wiring and connectors associated with the parking brake control module. Look for any signs of damage, such as frayed wires, corroded terminals, or loose connections. Use a wiring diagram to trace the circuits and identify any potential issues. Repair or replace any damaged wiring and ensure all connections are secure.

3.5. Testing the Parking Brake Control Module

Using VCDS, perform output tests on the parking brake control module to verify its functionality. This involves activating and deactivating the parking brake and monitoring the module’s response. If the module fails to respond or shows erratic behavior, it may be faulty and require replacement.

4. Steps to Reset the 00473 Audi Fault Code

Resetting the 00473 fault code involves addressing the underlying issue and then clearing the code using a diagnostic tool.

4.1. Addressing the Underlying Issue

Before resetting the fault code, it is crucial to identify and resolve the root cause. This may involve:

• Replacing a Faulty Sensor: If a wheel speed sensor is causing the issue, replace it with a new one.
• Repairing Wiring: Fix any damaged or corroded wiring and ensure all connections are secure.
• Replacing the Control Module: If the parking brake control module is faulty, replace it with a new or refurbished unit.
• Updating Software: Update the software of the parking brake control module to the latest version.
• Charging or Replacing the Battery: Ensure the battery is fully charged and in good condition.

Replacing the parking brake control module may be necessary if it is found to be faulty. Proper coding and adaptation are essential after replacement to ensure seamless integration with the vehicle’s system.

4.2. Clearing the Fault Code with VCDS

Once the underlying issue has been addressed, use VCDS to clear the fault code. Here’s how:

1. Connect VCDS: Connect the VCDS cable to the OBD-II port of your Audi and start the VCDS software on your computer.
2. Select Control Module: Select “03 – ABS Brakes” from the control module selection screen.
3. Fault Codes: Click on “Fault Codes – 02” to view the stored fault codes.
4. Clear Codes: Click on the “Clear Codes – 05” button. A warning message will appear; click “Yes” to proceed.
5. Verify Clearing: After clearing the codes, click on “Fault Codes – 02” again to verify that the 00473 fault code has been cleared.

  VCDS
  Control Module: 03 ABS Brakes
  Fault Codes:
  00473 - Control Module for Elect. Park/Hand Brake (J540)
  Status: Erased

4.3. Verifying the Repair

After clearing the fault code, it is essential to verify that the repair was successful and the code does not return. To do this:

1. Test the System: Activate and deactivate the parking brake several times to ensure it functions correctly.
2. Drive the Vehicle: Take the vehicle for a short drive to see if the fault code reappears under normal driving conditions.
3. Recheck Fault Codes: Use VCDS to recheck for any stored fault codes. If the 00473 code does not return, the repair was successful.

5. Advanced Troubleshooting

If the 00473 fault code persists after addressing the common causes, further troubleshooting steps may be necessary.

5.1. Checking ABS Module Communication

Since the parking brake system communicates with the ABS module, verify that the ABS module is functioning correctly and communicating with other systems. Use VCDS to check for any fault codes in the ABS module and perform output tests to verify its operation.

5.2. Examining the CAN Bus System

The CAN (Controller Area Network) bus is a communication network that allows various control modules in the vehicle to communicate with each other. Issues with the CAN bus can disrupt communication between the parking brake control module and other systems, leading to the 00473 fault code. Use an oscilloscope or a CAN bus analyzer to check the integrity of the CAN bus signals.

5.3. Module Replacement and Coding

If the parking brake control module is found to be faulty, it may need replacement. After replacing the module, it is essential to code it to the vehicle using VCDS or another suitable diagnostic tool. Coding ensures that the module is properly integrated with the vehicle’s system and functions correctly.

VCDS
Select Control Module: 53 Parking Brake
Adaptation:
Channel 001: Module Coding
Enter New Value: (Appropriate Coding for Vehicle)
Save

6. When to Seek Professional Help

While many diagnostic and repair tasks can be performed by knowledgeable individuals, certain situations require professional assistance.

6.1. Complex Diagnostic Procedures

Diagnosing electronic system faults can sometimes require advanced diagnostic procedures and specialized equipment. If you are not comfortable performing these procedures, it is best to seek professional help.

6.2. Electronic Component Issues

Repairing or replacing electronic components, such as control modules, requires specialized knowledge and skills. Incorrect handling or installation can cause further damage to the vehicle’s system.

6.3. Software and Coding Requirements

Software updates and module coding require specialized software and diagnostic tools. These tasks should be performed by qualified technicians with the necessary expertise.

6.4. Contacting AutoExplain for Remote Support

If you encounter difficulties diagnosing or repairing the 00473 fault code, AutoExplain.com offers remote support services. Our team of experienced technicians can provide guidance and assistance via WhatsApp or email. Contact us at:

• WhatsApp: (+84)967469410
• Email: [email protected]
• Website: AutoExplain.com
• Office Address: 1500 N Grant ST Sten Denver, CO 80203

AutoExplain.com is dedicated to providing quick and effective remote technical support to help you resolve your automotive issues efficiently.

AutoExplain.com provides expert remote support for diagnosing and resolving automotive issues. Our experienced technicians are available via WhatsApp and email to assist with complex diagnostic procedures, electronic component issues, and software coding requirements.

7. Preventive Measures

Preventing the 00473 fault code and other electronic system issues involves regular maintenance and care.

7.1. Regular Battery Maintenance

Ensure the battery is properly maintained and in good condition. Regularly check the battery voltage and charging system. Clean any corrosion from the battery terminals and ensure the connections are secure.

7.2. Inspecting and Maintaining Wiring

Regularly inspect the wiring and connectors associated with the electronic parking brake system. Look for any signs of damage, such as frayed wires or corroded connectors. Repair or replace any damaged wiring and ensure all connections are secure.

7.3. Software Updates

Keep the software of the vehicle’s control modules up to date. Software updates often include bug fixes and improvements that can prevent electronic system faults.

7.4. Professional Inspections

Schedule regular professional inspections to identify and address potential issues before they lead to fault codes and system failures.

8. Understanding Fault Code Priority and Frequency

In the diagnostic report, the fault codes come with priority and frequency indicators, which provide valuable insights into the nature and severity of the problem. Understanding these indicators can help in prioritizing and troubleshooting the issues effectively.

• Fault Priority: This indicates the severity of the fault. A lower number typically indicates a more critical fault that requires immediate attention. For example, a fault with priority 2 is more critical than one with priority 6.
• Fault Frequency: This shows how many times the fault has been recorded. A higher frequency suggests that the issue is persistent and not just a one-time occurrence.

In the provided VCDS data, the fault code 00473 has a priority of 6 and a frequency of 1, suggesting it’s a moderately important issue that has occurred once since the last reset. However, the ABS Wheel Speed Sensor fault has a higher priority (2) and should be addressed first.

9. Common Questions About Resetting Audi Fault Codes (FAQ)

Q1: Can I reset the 00473 fault code without fixing the underlying issue?

Resetting the 00473 fault code without addressing the underlying problem is possible, but the code will likely return. It is crucial to diagnose and repair the root cause of the issue to ensure a lasting solution.

Q2: What tools do I need to reset the 00473 Audi fault code?

To reset the 00473 Audi fault code, you’ll need a diagnostic tool such as VCDS (VAG-COM Diagnostic System) or a similar OBD-II scanner that is compatible with Audi vehicles. Additionally, a multimeter can be helpful for checking battery voltage and wiring continuity.

Q3: How do I know if the parking brake control module is faulty?

Signs of a faulty parking brake control module include the parking brake failing to engage or disengage, warning lights on the dashboard, error messages on the Multi-Function Display (MFD), and unusual noises from the rear brakes. A diagnostic scan with VCDS can confirm if the module is reporting errors or failing output tests.

Q4: Can low battery voltage cause the 00473 fault code?

Yes, low battery voltage can cause the 00473 fault code. Insufficient voltage can lead to erratic behavior in control modules, including the parking brake control module. Ensure your battery is fully charged and in good condition.

Q5: What should I do if the 00473 fault code returns after resetting it?

If the 00473 fault code returns after resetting it, this indicates that the underlying issue has not been resolved. Perform a thorough diagnosis of the parking brake system, including checking wiring, connections, and the control module. If you are unsure, seek professional assistance.

Q6: Is it safe to drive my Audi with the 00473 fault code present?

Driving with the 00473 fault code present may not be safe, as it indicates a problem with the parking brake system. The parking brake may not function correctly, which can compromise vehicle safety. It is recommended to have the issue diagnosed and repaired as soon as possible.

Q7: Can I update the software of the parking brake control module myself?

Updating the software of the parking brake control module requires specialized software and diagnostic tools. It is recommended to have this done by a qualified technician to avoid potential issues.

Q8: How often should I inspect the wiring and connections of my Audi’s parking brake system?

It is recommended to inspect the wiring and connections of your Audi’s parking brake system at least once a year, or whenever you notice any issues with the parking brake system.

Q9: What are the steps to replace the parking brake control module?

Replacing the parking brake control module involves disconnecting the battery, removing the old module, installing the new module, connecting the battery, and coding the new module to the vehicle using VCDS or another suitable diagnostic tool.

Q10: Where can I find reliable remote support for diagnosing Audi fault codes?

AutoExplain.com provides reliable remote support for diagnosing Audi fault codes. Our team of experienced technicians can provide guidance and assistance via WhatsApp or email. Contact us at (+84)967469410 or [email protected].

10. AutoExplain: Your Partner in Automotive Diagnostics

At AutoExplain.com, we understand the complexities of modern automotive diagnostics and repair. Our mission is to provide you with the expertise and support you need to keep your vehicle running smoothly. Whether you’re dealing with a complex fault code or need assistance with a specific repair procedure, our team of experienced technicians is here to help.

We offer a range of services to support your automotive needs, including:

• Remote Technical Support: Get quick and effective assistance via WhatsApp and email.
• Diagnostic Guidance: Receive expert advice on diagnosing complex automotive issues.
• Repair Procedures: Access detailed repair procedures and technical information.
• Software and Coding Support: Get assistance with software updates and module coding.

Contact AutoExplain.com today and experience the difference our expertise can make.

• WhatsApp: (+84)967469410
• Email: [email protected]
• Website: AutoExplain.com
• Office Address: 1500 N Grant ST Sten Denver, CO 80203

Let AutoExplain.com be your trusted partner in automotive diagnostics and repair.