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B3112 Buick Code - Keyless Entry Transmitter 4 Battery

Quick Answer

The B3112 diagnostic trouble code (DTC) for Buick vehicles indicates a problem with the battery of the keyless entry transmitter 4. Common causes include Low or depleted battery in the keyless entry transmitter 4, Faulty keyless entry transmitter 4, Electrical issues in the keyless entry system. 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
B3112 Buick indicates Keyless Entry Transmitter 4 Battery.
Common causes
Common causes include Low or depleted battery in the keyless entry transmitter 4, Faulty keyless entry transmitter 4, Electrical issues in the keyless entry system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 21, 2024
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Code B3112 Buick Description

The B3112 diagnostic trouble code (DTC) for Buick vehicles indicates a problem with the battery of the keyless entry transmitter 4. Keyless entry systems allow drivers to lock and unlock their vehicles remotely using a key fob. The keyless entry transmitter 4 is one of the key fobs used to operate this system. When the battery in this key fob is low or depleted, it can lead to issues with the keyless entry system's functionality.

OBDII Code B3112 Buick - Keyless Entry Transmitter 4 Battery
B3112 Buick Code - Keyless Entry Transmitter 4 Battery

Common Causes of B3112 Buick

  1. Low or depleted battery in the keyless entry transmitter 4
  2. Faulty keyless entry transmitter 4
  3. Electrical issues in the keyless entry system
  4. Environmental factors affecting battery life
  5. Wear and tear on the key fob components

Symptoms of B3112 Buick

  1. Intermittent or failed communication between the key fob and the vehicle
  2. Difficulty locking or unlocking the doors using the keyless entry system
  3. Inability to start the vehicle remotely
  4. Alarm system not responding to key fob commands
  5. Key fob not working at all

How to Fix B3112 Buick

  1. Replace the battery in the keyless entry transmitter 4 with a new one.
  2. Test the key fob to ensure proper functionality after replacing the battery.
  3. If the issue persists, consider replacing the keyless entry transmitter 4.
  4. Check for any electrical issues in the keyless entry system and address them accordingly.
  5. Regularly inspect and maintain the key fob to prevent future battery issues.

Cost to Fix B3112 Buick

The cost of replacing the battery in a keyless entry transmitter 4 typically ranges from $5 to $20, depending on the type of battery required. If the keyless entry transmitter 4 needs to be replaced, the cost can range from $50 to $100 for the part. Labor costs for diagnosis and repair can vary, with hourly rates typically between $80 and $150. It's advisable to consult with a qualified technician or auto repair shop for an accurate cost estimate based on your specific vehicle and location.

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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 B3112 Buick Code

1. What are the common symptoms of OBDII code B3112 in a Buick related to the Keyless Entry Transmitter 4 Battery?

The common symptoms include a malfunctioning keyless entry system, the key fob not working, or the inability to remotely unlock or lock the vehicle.

2. What are the possible causes of OBDII code B3112 in a Buick related to the Keyless Entry Transmitter 4 Battery?

Possible causes include a weak or dead battery in the key fob, a faulty key fob transmitter, or issues with the keyless entry system module.

3. How can I diagnose the issue causing OBDII code B3112 in my Buick related to the Keyless Entry Transmitter 4 Battery?

You can start by replacing the battery in the key fob. If the issue persists, you may need to have the key fob reprogrammed or have the keyless entry system module checked by a professional.

4. Can I repair OBDII code B3112 in my Buick related to the Keyless Entry Transmitter 4 Battery myself?

If the issue is simply a dead key fob battery, you can replace it yourself. However, if the problem lies with the key fob transmitter or the keyless entry system module, it's best to consult a professional for repair.

5. Is it safe to continue driving my Buick with OBDII code B3112 related to the Keyless Entry Transmitter 4 Battery?

While it may be safe to drive, it is inconvenient to not have a working keyless entry system. It's recommended to address the issue promptly to ensure the security and convenience of your vehicle.

6. Will resetting the OBDII code B3112 in my Buick related to the Keyless Entry Transmitter 4 Battery solve the problem?

Resetting the code may temporarily clear the error message, but if the underlying issue such as a faulty key fob or keyless entry system remains unresolved, the problem is likely to reoccur.

7. How do I know if the key fob is the problem causing OBDII code B3112 in my Buick related to the Keyless Entry Transmitter 4 Battery?

You can try using a spare key fob if available to see if the issue persists. If the spare key fob works fine, then the original key fob may need repair or replacement.

8. Can extreme weather conditions affect the performance of the keyless entry system and trigger OBDII code B3112 in my Buick?

Yes, extreme temperatures can impact the battery life of the key fob and affect the performance of the keyless entry system, leading to issues like OBDII code B3112.

9. How much does it typically cost to repair OBDII code B3112 in a Buick related to the Keyless Entry Transmitter 4 Battery?

The cost of repair can vary depending on the exact cause of the issue. Replacing a key fob battery is relatively inexpensive, while repairing or replacing a keyless entry system module can be more costly.

10. Can a dealership or an automotive locksmith help me resolve OBDII code B3112 in my Buick related to the Keyless Entry Transmitter 4 Battery?

Yes, both a dealership and an automotive locksmith have the tools and expertise to diagnose and repair issues related to the keyless entry system and key fobs, including OBDII code B3112.

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