AutoCodes – Toyota – B124A 2016 Toyota RAV4

B124A 2016 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 2016 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 268

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 2016 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 2016 Toyota RAV4 - Automatic High Beam Mirror - AutoCodes.com — B124A 2016 Toyota RAV4 Code - Automatic High Beam Mirror

What does this mean?

What are the Possible Causes of the DTC B124A 2016 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 2016 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 2016 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.

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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 2016 Toyota RAV4 Code

1. What does the OBDII code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system indicate?

The code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system typically signifies a fault related to the automatic high beam mirror function.

2. What are some common symptoms of OBDII code B124A on a 2016 Toyota RAV4?

Common symptoms of OBDII code B124A on a 2016 Toyota RAV4 may include malfunctioning automatic high beam mirror operation or the system failing to engage or disengage as intended.

3. What are possible causes of OBDII code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system?

Potential causes of OBDII code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system could include faulty sensors, wiring issues, a malfunctioning control module, or a defective high beam mirror assembly.

4. How can I diagnose the OBDII code B124A on my 2016 Toyota RAV4 Automatic High Beam Mirror system?

Diagnosing OBDII code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system typically involves using an OBDII scanner to retrieve the specific fault code, conducting a visual inspection of the high beam mirror components, and testing the sensors and wiring for any issues.

5. Is it safe to continue driving my 2016 Toyota RAV4 with the OBDII code B124A related to the Automatic High Beam Mirror system?

It is generally safe to drive your 2016 Toyota RAV4 with the OBDII code B124A related to the Automatic High Beam Mirror system, but it is recommended to address the issue promptly to ensure proper operation of the high beam mirror function.

6. Can I repair the OBDII code B124A issue on my 2016 Toyota RAV4 Automatic High Beam Mirror system myself?

Repairing the OBDII code B124A issue on a 2016 Toyota RAV4 Automatic High Beam Mirror system may require specialized tools and knowledge, so it is advisable to consult a professional technician or dealership for proper diagnosis and repair.

7. How much does it typically cost to fix the OBDII code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system?

The cost of fixing the OBDII code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system can vary depending on the specific cause of the issue, but it may involve expenses for parts, labor, and diagnostic services.

8. Are there any preventive maintenance tips to avoid encountering the OBDII code B124A on my 2016 Toyota RAV4 Automatic High Beam Mirror system in the future?

To help prevent issues like OBDII code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system, it's recommended to regularly inspect the high beam mirror components, keep sensors clean, and address any abnormal operation promptly.

9. Will resetting the OBDII code B124A on my 2016 Toyota RAV4 Automatic High Beam Mirror system make the issue go away permanently?

Resetting the OBDII code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system may temporarily clear the fault code, but if the underlying issue is not addressed, the code is likely to reappear. It's crucial to diagnose and repair the root cause of the problem.

10. Can the OBDII code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system affect other vehicle systems?

While the OBDII code B124A on a 2016 Toyota RAV4 Automatic High Beam Mirror system is specific to that system, it's essential to address any fault codes promptly to prevent potential cascading issues or malfunctions in other vehicle systems.