AutoCodes – Lexus – B1579 Lexus

B1579 Lexus Code - Voice Recognition Microphone Disconnected

Quick Answer

The Radio and Display Receiver Assembly (or Navigation Receiver Assembly) and Telephone Microphone Assembly are connected to each other using the microphone connection detection signal lines. Common causes include Faulty Map Light Assembly, Faulty Telephone Microphone Assembly, Telephone Microphone Assembly harness is open or shorted. 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 Lexus indicates Voice Recognition Microphone Disconnected.
Common causes: Common causes include Faulty Map Light Assembly, Faulty Telephone Microphone Assembly, Telephone Microphone Assembly harness is open or shorted.
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.

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Code Popularity 4,696

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1579 Lexus Description

OBDII Code B1579 Lexus - Voice Recognition Microphone Disconnected - AutoCodes.com — B1579 Lexus Code - Voice Recognition Microphone Disconnected

What does this mean?

What are the Possible Causes of the DTC B1579 Lexus?

Faulty Map Light Assembly
Faulty Telephone Microphone Assembly
Telephone Microphone Assembly harness is open or shorted
Telephone Microphone Assembly circuit poor electrical connection
Faulty Radio and Display Receiver Assembly (or Navigation Receiver Assembly)

How to Fix the DTC B1579 Lexus?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1579 Lexus code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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 Lexus Code

1. What are the common symptoms of OBDII code B1579 in a Lexus related to the voice recognition microphone?

- The common symptoms include loss of voice command functionality, unresponsiveness to voice prompts, and error messages related to the microphone.

2. What could cause the Voice Recognition Microphone Disconnected error (B1579) in a Lexus?

- The error code B1579 in a Lexus is typically triggered by a faulty voice recognition microphone, loose connections, or damaged wiring.

3. How can I diagnose the Voice Recognition Microphone Disconnected issue (B1579) in my Lexus?

- To diagnose B1579, check the voice recognition system connections, inspect the microphone for physical damage, and use an OBDII scanner to retrieve the specific fault code.

4. Can a DIY enthusiast repair the Voice Recognition Microphone Disconnected problem (B1579) in a Lexus?

- DIY enthusiasts can attempt to repair B1579 by checking and reconnecting loose wires, replacing the microphone if necessary, or seeking professional assistance for a more complex repair.

5. Are there any quick troubleshooting tips for fixing the Voice Recognition Microphone Disconnected error (B1579) in a Lexus?

- Quick troubleshooting tips include checking the microphone connections, ensuring there is no physical damage, and resetting the vehicle's audio or infotainment system.

6. Is it safe to continue driving with the Voice Recognition Microphone Disconnected issue (B1579) in a Lexus?

- While driving with B1579 may not pose immediate safety risks, it is recommended to address the issue promptly to restore voice command functionality and avoid potential distractions while driving.

7. How much does it typically cost to repair the Voice Recognition Microphone Disconnected problem (B1579) in a Lexus?

- The cost of repairing B1579 in a Lexus can vary depending on the extent of the issue, the need for a new microphone, labor costs, and whether professional services are required.

8. Can a software update fix the Voice Recognition Microphone Disconnected error (B1579) in a Lexus?

- In some cases, a software update from Lexus may address B1579 by resolving software glitches affecting the voice recognition system. Check with a dealership or service center for available updates.

9. Will disconnecting the car battery reset the Voice Recognition Microphone Disconnected error (B1579) code in a Lexus?

- Disconnecting the car battery may reset the system temporarily, but if the underlying issue causing B1579 is not addressed, the error code is likely to reappear once the vehicle is driven.

10. How long does it typically take to repair the Voice Recognition Microphone Disconnected issue (B1579) in a Lexus?

- The repair time for B1579 can vary depending on the complexity of the issue, availability of replacement parts, and whether professional assistance is needed. Simple fixes may take a short time, while more extensive repairs could require several hours or more.