AutoCodes – Mercury – B108F Mercury

B108F Mercury Code - Cabin Lock/Unlock Switch Signal Stuck Low

Quick Answer

The Body Control Module (BCM) monitors the Cabin Lock/Unlock Switch. Common causes include Faulty Cabin Lock/Unlock Switch, Cabin Lock/Unlock Switch harness is open or shorted, Cabin Lock/Unlock Switch circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: B108F Mercury indicates Cabin Lock/Unlock Switch Signal Stuck Low.
Common causes: Common causes include Faulty Cabin Lock/Unlock Switch, Cabin Lock/Unlock Switch harness is open or shorted, Cabin Lock/Unlock Switch circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,128

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B108F Mercury Description

The Body Control Module (BCM) monitors the Cabin Lock/Unlock Switch. The BCM sets the OBDII code when the Cabin Lock/Unlock Switch is not to factory specifications.

OBDII Code B108F Mercury - Cabin Lock/Unlock Switch Signal Stuck Low - AutoCodes.com — B108F Mercury Code - Cabin Lock/Unlock Switch Signal Stuck Low

What does this mean?

What are the Possible Causes of the DTC B108F Mercury?

Faulty Cabin Lock/Unlock Switch
Cabin Lock/Unlock Switch harness is open or shorted
Cabin Lock/Unlock Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B108F 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 B108F 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 B108F Mercury code?

Need more information on how to fix the B108F Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B108F 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 B108F Mercury Code

1. What are the common symptoms of OBDII code B108F (Mercury) - Cabin Lock/Unlock Switch Signal Stuck Low?

- The common symptoms include issues with locking and unlocking the cabin doors using the switch, unresponsiveness of the lock/unlock system, and potential warning lights on the dashboard.

2. What are the possible causes of OBDII code B108F (Mercury) - Cabin Lock/Unlock Switch Signal Stuck Low?

- The code can be triggered by a faulty cabin lock/unlock switch, damaged wiring or connectors related to the switch, or a malfunction in the control module.

3. How can I diagnose the issue related to OBDII code B108F (Mercury) - Cabin Lock/Unlock Switch Signal Stuck Low?

- Use a diagnostic scanner to retrieve the specific trouble code, inspect the cabin lock/unlock switch for physical damage, and check the wiring and connectors for any signs of wear or corrosion.

4. Can I repair OBDII code B108F (Mercury) - Cabin Lock/Unlock Switch Signal Stuck Low myself?

- Depending on your skill level, you may be able to replace a faulty cabin lock/unlock switch or repair damaged wiring yourself. However, if the issue lies with the control module, professional assistance may be required.

5. What are the steps to replace the cabin lock/unlock switch to resolve OBDII code B108F (Mercury) - Cabin Lock/Unlock Switch Signal Stuck Low?

- Disconnect the battery, remove the door panel to access the switch, disconnect the wiring harness, remove the old switch, install the new switch, reconnect the wiring, reassemble the door panel, and test the lock/unlock function.

6. Is it safe to continue driving with OBDII code B108F (Mercury) - Cabin Lock/Unlock Switch Signal Stuck Low?

- It is generally safe to drive with this code, but you may experience inconvenience with locking/unlocking the cabin doors. Addressing the issue promptly is recommended to avoid potential security or functionality issues.

7. How much does it typically cost to repair OBDII code B108F (Mercury) - Cabin Lock/Unlock Switch Signal Stuck Low at a dealership or repair shop?

- The cost can vary depending on the exact cause of the issue, but replacing a cabin lock/unlock switch at a dealership or repair shop can range from $100 to $300 including parts and labor.

8. What are some preventive maintenance tips to avoid triggering OBDII code B108F (Mercury) - Cabin Lock/Unlock Switch Signal Stuck Low?

- Regularly inspect and clean the cabin lock/unlock switch, avoid excessive force when using the switch, and address any door lock issues promptly to prevent further damage.