AutoCodes – Mercury – B10D7 Mercury

B10D7 Mercury Code - PATS Key System Programming Failure

Quick Answer

When the Body Control Module (BCM) enters a key programming state, it activates the transceiver to read the key in the ignition key cylinder. Common causes include Passive Anti-Theft System (PATS) key not programmed, Faulty Body Control Module (BCM). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B10D7 Mercury indicates PATS Key System Programming Failure.
Common causes: Common causes include Passive Anti-Theft System (PATS) key not programmed, Faulty Body Control Module (BCM).
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,143

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Feb 19, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B10D7 Mercury Description

When the Body Control Module (BCM) enters a key programming state, it activates the transceiver to read the key in the ignition key cylinder. If a valid Passive Anti-Theft System (PATS) key is used and there are no concerns with PATS, the key is programmed into the BCM memory. The OBDII code sets when a PATS key is not successfully programmed into the BCM.

OBDII Code B10D7 Mercury - PATS Key System Programming Failure - AutoCodes.com — B10D7 Mercury Code - PATS Key System Programming Failure

What does this mean?

What are the Possible Causes of the DTC B10D7 Mercury?

Passive Anti-Theft System (PATS) key not programmed
Faulty Body Control Module (BCM)

How to Fix the DTC B10D7 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 does this mean?

Code Tech Notes

B10D7:05 PATS Key: System Programming Failure
B10D7:81 PATS Key: Invalid Serial Data Received
B10D7:87 PATS Key: Missing Message

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B10D7 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.

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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 B10D7 Mercury Code

1. What are the common symptoms of OBDII code B10D7 (PATS Key System Programming Failure) in a Mercury vehicle?

- Common symptoms include the engine not starting, the vehicle going into anti-theft mode, and the dashboard showing a flashing security light.

2. What are the possible causes of OBDII code B10D7 in a Mercury vehicle?

- The possible causes include a faulty key, issues with the PATS (Passive Anti-Theft System) module, improper key programming, or damaged wiring.

3. How can I troubleshoot OBDII code B10D7 in my Mercury vehicle?

- You can start by checking the key fob battery, ensuring the key is programmed correctly, inspecting the wiring for any damage, and performing a reset procedure on the PATS system.

4. Can I fix OBDII code B10D7 myself, or do I need to take my Mercury to a mechanic?

- Depending on the cause, you may be able to fix the issue yourself by following troubleshooting steps. If the problem persists, it is recommended to seek help from a qualified mechanic.

5. Is it safe to continue driving my Mercury with OBDII code B10D7 present?

- It is not recommended to drive the vehicle with this code present, as it may lead to starting issues or the vehicle going into anti-theft mode while driving.

6. How much does it typically cost to repair OBDII code B10D7 in a Mercury vehicle?

- The cost of repair can vary depending on the cause of the issue. Simple fixes like replacing a key fob battery may be inexpensive, while more complex issues involving the PATS system may require professional diagnosis and repair.

7. Can a low car battery trigger OBDII code B10D7 in a Mercury vehicle?

- Yes, a low car battery can sometimes trigger this code as it may affect the power supply to the PATS system and cause programming failure.

8. Will disconnecting the car battery reset OBDII code B10D7 in a Mercury vehicle?

- Disconnecting the car battery may reset the code temporarily, but if the underlying issue is not addressed, the code is likely to reappear.

9. How long does it usually take to diagnose and repair OBDII code B10D7 in a Mercury vehicle?

- The time needed for diagnosis and repair can vary depending on the complexity of the issue. Simple fixes may take less time, while more involved repairs may require additional diagnostics and parts replacement.

10. Can I prevent OBDII code B10D7 from occurring in my Mercury vehicle?

- To prevent this code, make sure to properly maintain your key fob, avoid exposing it to water or physical damage, and have it programmed correctly by a professional if needed. Regularly checking the condition of the key and the PATS system can help prevent issues.