AutoCodes – Toyota – B124A 2015 Toyota RAV4

B124A 2015 Toyota RAV4 Code - Automatic High Beam Mirror

Quick Answer

This Diagnostic Trouble Code (DTC) is stored when the Main Body ECU (Multiplex Network Body ECU) detects a malfunction in the Forward Recognition Camera. Common causes include Faulty Forward Recognition Camera, Forward Recognition Camera harness is open or shorted, Forward Recognition Camera circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B124A 2015 Toyota RAV4 indicates Automatic High Beam Mirror.
Common causes: Common causes include Faulty Forward Recognition Camera, Forward Recognition Camera harness is open or shorted, Forward Recognition Camera circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 345

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B124A 2015 Toyota RAV4 Description

This Diagnostic Trouble Code (DTC) is stored when the Main Body ECU (Multiplex Network Body ECU) detects a malfunction in the Forward Recognition Camera.

OBDII Code B124A 2015 Toyota RAV4 - Automatic High Beam Mirror - AutoCodes.com — B124A 2015 Toyota RAV4 Code - Automatic High Beam Mirror

What does this mean?

What are the Possible Causes of the DTC B124A 2015 Toyota RAV4?

Faulty Forward Recognition Camera
Forward Recognition Camera harness is open or shorted
Forward Recognition Camera circuit poor electrical connection
Faulty Main Body ECU (Multiplex Network Body ECU)

How to Fix the DTC B124A 2015 Toyota RAV4?

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 does this mean?

Code Tech Notes

When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera that was installed on another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle. As a result, a DTC may be stored.
If the forward recognition camera has been replaced with a new one, be sure to perform Recognition Camera/Target Position Memory and Recognition Camera Axis Adjust.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B124A 2015 Toyota RAV4 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.

Need more information about the B124A 2015 Toyota RAV4 code?

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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 B124A 2015 Toyota RAV4 Code

1. What does the OBDII code B124A mean on a 2015 Toyota RAV4 Automatic High Beam Mirror system?

The B124A code indicates a fault in the Automatic High Beam Mirror system of the 2015 Toyota RAV4.

2. What are the common symptoms of OBDII code B124A in a 2015 Toyota RAV4?

Common symptoms of the B124A code may include malfunctioning automatic high beam mirror operation or a warning light on the dashboard.

3. What are the possible causes of OBDII code B124A in a 2015 Toyota RAV4?

Possible causes of the B124A code include wiring issues, a faulty automatic high beam mirror sensor, or a malfunction in the control module.

4. How can I diagnose the OBDII code B124A in my 2015 Toyota RAV4?

Diagnosing the B124A code typically involves using an OBDII scanner to retrieve the code, checking the wiring and connections, and testing the automatic high beam mirror components.

5. Can I still drive my 2015 Toyota RAV4 with the OBDII code B124A present?

It is generally safe to continue driving your vehicle with the B124A code, but it is recommended to have the issue diagnosed and repaired to ensure proper operation of the automatic high beam mirror system.

6. How can I reset the OBDII code B124A in my 2015 Toyota RAV4?

Resetting the B124A code can be done using an OBDII scanner by clearing the code after addressing the underlying issue with the automatic high beam mirror system.

7. Are there any DIY repair tips for fixing the OBDII code B124A in a 2015 Toyota RAV4?

DIY repair tips may include checking and cleaning the connections, inspecting the sensor for damage, and ensuring there are no obstructions affecting the automatic high beam mirror operation.

8. Is it recommended to seek professional help for repairing the OBDII code B124A in a 2015 Toyota RAV4?

For complex issues or if you are unsure about the diagnosis, it is advisable to seek the help of a qualified mechanic or dealership to properly address the B124A code in your 2015 Toyota RAV4.

9. How much does it cost to repair the OBDII code B124A in a 2015 Toyota RAV4?

The cost of repairing the B124A code can vary depending on the underlying issue, parts needed, and labor costs, so it is recommended to obtain quotes from different repair shops.

10. Can the OBDII code B124A in a 2015 Toyota RAV4 cause other problems if left unaddressed?

Leaving the B124A code unaddressed may lead to continued issues with the automatic high beam mirror system and could potentially affect the overall performance of the vehicle's lighting system.