AutoCodes – Toyota – B124A 2017 Toyota RAV4

B124A 2017 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 2017 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 304
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 19, 2024
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Code B124A 2017 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 2017 Toyota RAV4 - Automatic High Beam Mirror - AutoCodes.com
B124A 2017 Toyota RAV4 Code - Automatic High Beam Mirror

What are the Possible Causes of the DTC B124A 2017 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 2017 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B124A 2017 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 2017 Toyota RAV4 code?

Need more information on how to fix the B124A 2017 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the 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 2017 Toyota RAV4 Code

1. What does the OBDII code B124A on a 2017 Toyota RAV4 related to the Automatic High Beam Mirror indicate?

The B124A code specifically points to a fault in the Automatic High Beam Mirror system of the vehicle.

2. What are some common symptoms of the B124A OBDII code in a 2017 Toyota RAV4?

Common symptoms include the automatic high beam feature not functioning properly, the high beams not turning on or off automatically as intended, or a warning light on the dashboard related to the high beam system.

3. What could be causing the B124A code to trigger on a 2017 Toyota RAV4 Automatic High Beam Mirror?

Possible causes for the B124A code include a malfunctioning high beam mirror assembly, wiring issues, a faulty sensor, or a problem with the control module associated with the automatic high beam system.

4. How can I diagnose the B124A OBDII code in my 2017 Toyota RAV4 related to the Automatic High Beam Mirror?

Diagnosis typically involves a thorough inspection of the high beam mirror components, checking the wiring for any damage or loose connections, and using an OBDII scanner to retrieve specific diagnostic trouble codes.

5. Is it safe to continue driving with the B124A code present in a 2017 Toyota RAV4?

While the vehicle should still be operational with the B124A code, it is recommended to address the issue promptly to ensure the proper functioning of the automatic high beam system for optimal visibility and safety.

6. Can I repair the B124A OBDII code in my 2017 Toyota RAV4 Automatic High Beam Mirror myself?

Depending on your automotive repair skills and experience, you may be able to address simpler causes such as checking and reconnecting wiring. However, more complex issues may require professional diagnosis and repair.

7. Will resetting the OBDII system clear the B124A code in a 2017 Toyota RAV4?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the B124A code is not addressed, it is likely to reappear once the system detects the fault again.

8. How much does it typically cost to repair the B124A code in a 2017 Toyota RAV4 Automatic High Beam Mirror?

The cost of repair can vary depending on the specific cause of the code and whether it requires parts replacement or extensive labor. It is advisable to consult with a professional mechanic for an accurate estimate.

9. Can extreme weather conditions affect the Automatic High Beam Mirror system in a 2017 Toyota RAV4 and trigger the B124A code?

Yes, extreme weather conditions such as heavy rain, snow, or extreme temperatures can potentially impact the sensors and components of the Automatic High Beam Mirror system, leading to the triggering of the B124A code.

10. Is the B124A OBDII code specific to the 2017 Toyota RAV4, or can it appear in other vehicle models as well?

The B124A code is specific to the 2017 Toyota RAV4 Automatic High Beam Mirror system, so it may not apply directly to other vehicle makes and models.

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