B124A Toyota 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 Toyota 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.
Code B124A Toyota Description
What are the Possible Causes of the DTC B124A Toyota?
- 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 Toyota?
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
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 Toyota 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 Toyota code?
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Need Help with the Code?
Get the B124A Toyota code diagnosed by a professional: Find a repair shop in your area
Information for Specific Toyota Models
- B124A 2013 Toyota RAV4 — Automatic High Beam Mirror
- B124A 2014 Toyota RAV4 — Automatic High Beam Mirror
- B124A 2015 Toyota RAV4 — Automatic High Beam Mirror
- B124A 2016 Toyota RAV4 — Automatic High Beam Mirror
- B124A 2017 Toyota RAV4 — Automatic High Beam Mirror
- B124A 2018 Toyota RAV4 — Automatic High Beam Mirror
Frequently Asked Questions about B124A Toyota Code
1. What does OBDII code B124A for Toyota Automatic High Beam Mirror indicate?
The B124A code specifically relates to a fault in the Automatic High Beam Mirror system of a Toyota vehicle.
2. What are the common symptoms of a B124A code in a Toyota?
Common symptoms include malfunctioning automatic high beam mirror function, failure to switch between high and low beams automatically, or a warning light on the dashboard.
3. What are the possible causes of the B124A code in a Toyota?
Potential causes include faulty automatic high beam mirror components, wiring issues, sensor malfunctions, or a problem with the control module.
4. How can I diagnose the B124A code in my Toyota?
Diagnosis typically involves using an OBDII scanner to read the fault code, inspecting the automatic high beam mirror system for visible damage, and testing the components for proper functionality.
5. Can I still drive my Toyota with a B124A code present?
While it may be possible to drive with this code, it is recommended to address the issue promptly to ensure the automatic high beam mirror system functions correctly for safety reasons.
6. How can I reset the B124A code in my Toyota?
Resetting the code can be done using an OBDII scanner by clearing the fault code after addressing the underlying issue with the automatic high beam mirror system.
7. Is it safe to repair the B124A code in my Toyota myself?
If you have the necessary knowledge and experience working with automotive electrical systems, you may attempt to repair the issue. Otherwise, it is advisable to seek assistance from a qualified mechanic.
8. What are some tips for repairing the B124A code in a Toyota?
Start by checking the wiring and connections related to the automatic high beam mirror system, inspect the sensors for any damage, and consider replacing any faulty components identified during diagnosis.
9. How much does it cost to repair the B124A code in a Toyota?
The cost of repair can vary depending on the specific issue causing the B124A code, the labor rates in your area, and whether any components need to be replaced. It is recommended to obtain quotes from different mechanics for an accurate estimate.
10. Can a B124A code in a Toyota be prevented?
Regular maintenance and inspection of the automatic high beam mirror system can help prevent issues that may trigger the B124A code. Addressing any warning signs promptly can also minimize the risk of this code appearing.
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