AutoCodes – Mercury – B10C2 Mercury

B10C2 Mercury Code - Left Rear Unlock Pull Switch Signal Stuck High

Quick Answer

The Remote Function Actuator (RFA) Module interprets radio frequency signals from the Remote Functions Receiver (RFR) Module and Intelligent Access (IA) key transmitters. Common causes include Faulty Left Rear Unlock Pull Switch, Left Rear Unlock Pull Switch harness is open or shorted, Left Rear Unlock Pull Switch 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
B10C2 Mercury indicates Left Rear Unlock Pull Switch Signal Stuck High.
Common causes
Common causes include Faulty Left Rear Unlock Pull Switch, Left Rear Unlock Pull Switch harness is open or shorted, Left Rear Unlock Pull Switch 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 965
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 B10C2 Mercury Description

The Remote Function Actuator (RFA) Module interprets radio frequency signals from the Remote Functions Receiver (RFR) Module and Intelligent Access (IA) key transmitters. The RFA module receives input signals from various modules and other components. Based on this information, the RFA module generates an output signal to control various components such as the door locks and the liftgate. The OBDII code sets when the RFA module detects the left rear unlock sensor activated for more than 5 minutes.
OBDII Code B10C2 Mercury - Left Rear Unlock Pull Switch Signal Stuck High - AutoCodes.com
B10C2 Mercury Code - Left Rear Unlock Pull Switch Signal Stuck High

What are the Possible Causes of the DTC B10C2 Mercury?

  • Faulty Left Rear Unlock Pull Switch
  • Left Rear Unlock Pull Switch harness is open or shorted
  • Left Rear Unlock Pull Switch circuit poor electrical connection
  • Faulty Remote Function Actuator (RFA) Module

How to Fix the DTC B10C2 Mercury?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B10C2 Mercury 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 B10C2 Mercury code?

Need more information on how to fix the B10C2 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B10C2 Mercury code diagnosed by a professional: Find a repair shop in your area

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 B10C2 Mercury Code

1. What are the common symptoms of OBDII code B10C2 in a Mercury related to the Left Rear Unlock Pull Switch Signal Stuck High?

The common symptoms include the left rear door failing to unlock using the pull switch, intermittent unlocking, or the door not responding at all.

2. What could cause the OBDII code B10C2 to trigger in a Mercury?

This code is typically triggered by a malfunction in the left rear door unlock pull switch circuit, such as a short circuit, wiring issue, or a faulty switch.

3. How can I diagnose the cause of the Left Rear Unlock Pull Switch Signal Stuck High OBDII code in my Mercury?

To diagnose this issue, you can start by checking the wiring connections, inspecting the pull switch for damage, and using a multimeter to test the switch's functionality.

4. Is it safe to continue driving my Mercury with the B10C2 OBDII code present?

It is not recommended to continue driving the vehicle with this code active, as it may lead to inconvenience and potential safety concerns if the left rear door cannot be unlocked properly.

5. Can I repair the Left Rear Unlock Pull Switch Signal Stuck High issue in my Mercury on my own?

If you have experience with automotive electrical systems and access to the necessary tools, you may be able to repair this issue yourself by identifying and resolving the underlying cause.

6. Are there any temporary fixes or workarounds for the B10C2 code in a Mercury?

While temporary fixes like manually unlocking the left rear door from the inside may be possible, it is important to address the root cause of the issue to prevent further complications.

7. How much does it typically cost to repair the Left Rear Unlock Pull Switch Signal Stuck High problem in a Mercury?

The cost of repairing this issue can vary depending on the exact cause of the problem, but it may involve replacing the pull switch, repairing wiring, or addressing other related issues.

8. Will resetting the OBDII code B10C2 in my Mercury make the problem go away?

Resetting the code may temporarily clear the error message, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the problem again.

9. Can extreme weather conditions contribute to triggering the B10C2 code in a Mercury?

Extreme temperatures or moisture may affect the electrical components involved in the left rear door unlock system, potentially leading to issues that trigger the B10C2 code.

10. How can I prevent the Left Rear Unlock Pull Switch Signal Stuck High issue from occurring in my Mercury in the future?

Regularly inspecting and maintaining the door lock mechanisms, keeping the vehicle dry and protected from extreme weather, and addressing any electrical issues promptly can help prevent this problem from occurring again.

Discuss the causes and fixes for B10C2 Mercury OBDII Code

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