B059A - Understanding the Code and Its Impact on Your 2015-2019 Ford Explorer and Other Vehicles

Quick Answer

B059A means: B059A indicates a fault in the seat belt reminder system linked to the body control module.

Fix: Check and replace faulty components Cost: $50 - $150 Time: 90-180 minutes

Can I drive with B059A? Immediate attention is recommended to ensure passenger safety and proper vehicle operation.

Common Questions

What does B059A mean and how does it affect my car?

The B059A code indicates a malfunction in your vehicle’s seat belt reminder system. This means that the system designed to alert you when seat belts are not fastened is not functioning correctly. This can lead to potential safety risks, as you may not receive warnings prompting you or your passengers to buckle up. It is crucial to address this issue promptly to ensure full functionality of your vehicle's safety features.

What are the most common causes of B059A and how much does it cost to fix?

Common causes of the B059A code include damaged connectors or wiring, faulty BCM software, or a failing BCM itself. Repair costs can range from $50 for simple connector repairs to $600 for complete BCM replacement. It's essential to diagnose the exact cause to determine the most cost-effective solution.

Can I drive my car with B059A or should I stop immediately?

While the vehicle is drivable, it is not advisable to ignore the B059A code. Driving with a malfunctioning seat belt reminder system can compromise safety. It's best to get the issue diagnosed and repaired as soon as possible to ensure that all safety systems are operational.

How can I diagnose B059A myself using GeekOBD APP?

To diagnose B059A using the GeekOBD APP, connect the app to your vehicle's OBD2 port and scan for trouble codes. Review the freeze frame data to understand the circumstances under which the code was triggered. Look for any related codes that might provide additional context. This will help you pinpoint the issue more effectively.

What vehicles are most commonly affected by B059A?

The B059A code is commonly found in vehicles like the 2015-2019 Ford Explorer, but it can also affect other models from various manufacturers that utilize similar body control modules. Always check for manufacturer-specific recalls and technical service bulletins (TSBs) regarding this code.

How can I prevent B059A from happening again?

Regular maintenance checks can help prevent B059A from recurring. Ensure that all wiring and connectors are in good condition, especially if your vehicle is exposed to harsh weather conditions. Additionally, keeping your BCM software updated can help mitigate issues related to system malfunctions.

What is B059A?

The B059A diagnostic trouble code (DTC) indicates a malfunction within the vehicle's body control module (BCM), specifically related to the seat belt reminder system. This code is most commonly found in vehicles like the 2015-2019 Ford Explorer, but can also appear in other makes and models that utilize similar BCM functionalities. When this code triggers, it typically means that the BCM has detected a fault in the seat belt reminder circuit, which may lead to the seat belt warning light staying illuminated or audible alerts not functioning as designed. The seat belt reminder system is crucial for passenger safety, as it is designed to encourage the use of seat belts. If left unaddressed, this could result in a false sense of security, especially in the event of an accident. Moreover, the presence of a persistent warning light may cause drivers to overlook other potential issues, leading to further complications in vehicle diagnostics. Therefore, understanding and addressing the B059A code not only enhances safety but also ensures that all vehicle systems function as intended. Immediate attention to this issue is recommended, as it could be symptomatic of a broader electrical or safety system failure.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B059A is present:

  • The seat belt warning light remains on even when seat belts are secured, indicating a malfunction in the system.
  • Audible seat belt chimes may not activate, leading to a lack of reminders for passengers to buckle up.
  • Inconsistent functionality of related safety features, such as the airbag system, which could compromise safety in an accident.
  • Dashboard warning lights may cluster, causing confusion about the vehicle's overall health.
  • Potential for increased insurance premiums if the vehicle is deemed unsafe due to unaddressed safety system faults.

Possible Causes

Most common causes of B059A (ordered by frequency):

  1. A loose or damaged connector within the seat belt reminder circuit is the most common cause, with a likelihood of around 40%.
  2. Faulty BCM software or hardware can lead to erroneous readings and system failures, accounting for about 30% of cases.
  3. Corroded wiring from exposure to moisture or road salts can disrupt signal integrity, which is a common issue in older models.
  4. Less frequently, issues may arise from a malfunctioning seat belt tensioner, which could affect the entire reminder system.
  5. In rare cases, a complete failure of the BCM itself could occur, necessitating replacement or extensive repair.

B059A Repair Costs

Cost Breakdown by Repair Type

Connector Repair

Repair or replacement of damaged connectors within the seat belt reminder system.

  • Total: $50 - $150
  • Success rate: 85%
BCM Software Update

Updating the body control module's software to rectify communication errors.

  • Total: $100 - $200
  • Success rate: 75%
BCM Replacement

Replacing the body control module if it is found to be faulty.

  • Total: $300 - $600
  • Success rate: 90%
Money-Saving Tips for B059A
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional B059A Diagnosis Process

Follow these systematic steps to accurately diagnose B059A. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Perform an initial visual inspection of the wiring and connectors related to the seat belt system, looking for any visible signs of damage or corrosion (5-10 minutes)

Step 1: Perform an initial visual inspection of the wiring and connectors related to the seat belt system, looking for any visible signs of damage or corrosion (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: Utilize an OBD2 scanner, preferably with the GeekOBD APP, to retrieve all trouble codes and freeze frame data to gain context for the B059A code (10-15 minutes)

Step 2: Utilize an OBD2 scanner, preferably with the GeekOBD APP, to retrieve all trouble codes and freeze frame data to gain context for the B059A code (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Test specific components using a multimeter to check for continuity and voltage in the seat belt reminder circuit (20-30 minutes)

Step 3: Test specific components using a multimeter to check for continuity and voltage in the seat belt reminder circuit (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: After repairs, conduct a system function test to ensure the seat belt reminder operates correctly and clear any stored codes (10-15 minutes)

Step 4: After repairs, conduct a system function test to ensure the seat belt reminder operates correctly and clear any stored codes (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Take the vehicle for a road test to verify that the seat belt reminder system works under driving conditions and no new codes appear (15-20 minutes)

Step 5: Take the vehicle for a road test to verify that the seat belt reminder system works under driving conditions and no new codes appear (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Seat Belt Reminder Malfunction in 2016 Ford Explorer

Vehicle: 2016 Ford Explorer, 75,000 miles

Problem: Customer reported that the seat belt warning light was constantly illuminated, despite all seat belts being secured.

Diagnosis: After scanning with the GeekOBD APP, the B059A code was confirmed. Visual inspection revealed a corroded connector in the seat belt reminder circuit.

Solution: The corroded connector was replaced and the system was tested, resulting in the warning light extinguishing.

Cost: $75 (parts included)

Result: Customer reported satisfaction with the repair and confirmed that the reminder system was functioning correctly.

Case Study 2: BCM Replacement for 2018 Honda Accord

Vehicle: 2018 Honda Accord, 50,000 miles

Problem: The customer experienced intermittent warnings from the seat belt reminder system and a B059A code was present.

Diagnosis: A thorough diagnostic process indicated that the BCM was malfunctioning, leading to erratic signal transmission.

Solution: The BCM was replaced, and the system was reprogrammed to restore full functionality.

Cost: $450 (including labor and parts)

Result: Post-repair, the customer confirmed that the seat belt reminder system worked flawlessly without any warning lights.

Diagnose B059A

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: B059A
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes