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B1579 Toyota Code - Voice Recognition Microphone Disconnected

Quick Answer

The B1579 code for Toyota vehicles indicates that the voice recognition microphone has been disconnected or is not functioning properly. Common causes include Loose or disconnected wiring connecting the microphone to the vehicle's system, Faulty microphone component, Water damage or corrosion affecting the microphone or its connections. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B1579 Toyota indicates Voice Recognition Microphone Disconnected.
Common causes
Common causes include Loose or disconnected wiring connecting the microphone to the vehicle's system, Faulty microphone component, Water damage or corrosion affecting the microphone or its connections.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code B1579 Toyota Description

The B1579 code for Toyota vehicles indicates that the voice recognition microphone has been disconnected or is not functioning properly. The voice recognition system in modern vehicles allows drivers to control various functions, such as making phone calls, adjusting the climate control, or selecting music, using voice commands. The microphone plays a crucial role in capturing and interpreting the driver's voice commands accurately.

OBDII Code B1579 Toyota - Voice Recognition Microphone Disconnected
B1579 Toyota Code - Voice Recognition Microphone Disconnected

Common Causes of B1579 Toyota

  1. Loose or disconnected wiring connecting the microphone to the vehicle's system.
  2. Faulty microphone component.
  3. Water damage or corrosion affecting the microphone or its connections.
  4. Electrical issues within the voice recognition system.
  5. Impact or physical damage to the microphone causing disconnection.

Symptoms of B1579 Toyota

  1. Voice commands not recognized or responded to by the vehicle.
  2. Inaccurate interpretation of voice commands leading to incorrect actions.
  3. Inability to make phone calls or interact with the infotainment system using voice commands.
  4. Loss of hands-free functionality while driving.

How to Fix B1579 Toyota

  1. Begin by locating the voice recognition microphone in the vehicle, typically near the driver's headliner or visor.
  2. Inspect the wiring and connectors leading to the microphone for any signs of damage, looseness, or disconnection. Reconnect or repair any damaged wiring as needed.
  3. Test the microphone for functionality by initiating voice commands and checking the system's response.
  4. If the microphone is found to be faulty, replace it with a new one compatible with the vehicle's system.
  5. Clear the diagnostic trouble codes from the vehicle's system using an OBD-II scanner to ensure the issue has been resolved.

Cost to Fix B1579 Toyota

The cost of repairing the B1579 code for a Toyota vehicle can vary depending on the specific model and year, as well as the extent of the issue. Typically, replacing a voice recognition microphone and addressing any wiring issues can range from $100 to $300 in parts and labor. However, it is essential to consider additional diagnostic time and labor rates, which can vary between auto repair shops. It is recommended to consult with a professional technician to get an accurate estimate based on the vehicle's make and model.

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Information for Specific Toyota Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1579 Toyota Code

1. What are the common symptoms of OBDII code B1579 Toyota (Voice Recognition Microphone Disconnected)?

The common symptoms include loss of voice recognition functionality, inability to use hands-free calling, and error messages related to the microphone.

2. What can cause the OBDII code B1579 Toyota to trigger?

The code B1579 Toyota is typically triggered when the voice recognition microphone is disconnected or malfunctioning.

3. How can I diagnose the issue causing the OBDII code B1579 Toyota?

To diagnose the issue, check the connection of the voice recognition microphone, inspect for any physical damage, and test the microphone's functionality.

4. What are some repair tips for fixing the OBDII code B1579 Toyota?

Repair tips include ensuring the microphone is properly connected, replacing the microphone if damaged, and resetting the vehicle's audio system.

5. Can I fix the OBDII code B1579 Toyota issue on my own?

If you are comfortable with basic automotive repairs and have the necessary tools, you may be able to fix the issue on your own by checking the microphone's connection and condition.

6. Is it safe to continue driving with the OBDII code B1579 Toyota present?

While the code B1579 Toyota is not a critical issue for vehicle operation, it is recommended to address it to restore voice recognition functionality and hands-free calling features.

7. Will resetting the vehicle's audio system help clear the OBDII code B1579 Toyota?

Resetting the audio system may help clear the code temporarily, but if the underlying issue with the voice recognition microphone is not addressed, the code is likely to reappear.

8. Can extreme temperatures or moisture affect the voice recognition microphone and trigger the OBDII code B1579 Toyota?

Yes, extreme temperatures or moisture can potentially damage the voice recognition microphone, leading to the triggering of the OBDII code B1579 Toyota.

9. How much does it typically cost to replace a malfunctioning voice recognition microphone in a Toyota vehicle?

The cost of replacing a malfunctioning voice recognition microphone can vary depending on the specific model of the vehicle and the labor charges at the repair shop. It is recommended to obtain a few quotes from different shops for comparison.

10. Is the OBDII code B1579 Toyota a common issue in Toyota vehicles?

While not extremely common, the OBDII code B1579 Toyota related to the voice recognition microphone can occur in Toyota vehicles, especially in older models or those exposed to harsh environmental conditions.

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