Engine-CodesGeneric – B310E

B310E Code - Keyless Entry Transmitter 7 Battery

Quick Answer

The diagnostic trouble code B310E refers to an issue with the Keyless Entry Transmitter 7 Battery. Common causes include Depleted battery in the keyless entry transmitter, Defective keyless entry transmitter, Faulty wiring or connections 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
B310E indicates Keyless Entry Transmitter 7 Battery.
Common causes
Common causes include Depleted battery in the keyless entry transmitter, Defective keyless entry transmitter, Faulty wiring or connections 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.
Table of contents Created and updated by William Orellana on Sep 07, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B310E Description

The diagnostic trouble code B310E refers to an issue with the Keyless Entry Transmitter 7 Battery. This code indicates that there is a problem with the battery in the keyless entry remote for the vehicle. Keyless entry systems have become a common feature in modern vehicles, allowing drivers to lock and unlock their cars without physically using a key. The keyless entry transmitter communicates with the vehicle's onboard computer system to perform these functions.

OBDII Code B310E - Keyless Entry Transmitter 7 Battery
B310E Code - Keyless Entry Transmitter 7 Battery

Common Causes of B310E

  1. Depleted battery in the keyless entry transmitter
  2. Defective keyless entry transmitter
  3. Faulty wiring or connections in the keyless entry system
  4. Interference from other electronic devices affecting the signal transmission
  5. Water damage or physical damage to the keyless entry transmitter

Symptoms of B310E

  1. Difficulty locking or unlocking the vehicle using the keyless entry remote
  2. Inconsistent response from the vehicle to keyless entry commands
  3. Inability to start the vehicle remotely (if applicable)
  4. Warning light on the dashboard indicating a keyless entry system fault

How to Fix B310E

  1. Replace the battery in the keyless entry transmitter with a new one, following the manufacturer's instructions for the specific model.
  2. If replacing the battery does not resolve the issue, consider replacing the keyless entry transmitter itself.
  3. Check for any loose or damaged wiring in the keyless entry system and repair or replace as necessary.
  4. Test the keyless entry system to ensure proper functionality after completing the repair process.

Cost to Fix B310E

The cost of repairing a Keyless Entry Transmitter 7 Battery issue can vary depending on the specific make and model of the vehicle, as well as the cost of parts and labor in your area. In general, replacing the battery in the keyless entry transmitter is a relatively inexpensive fix, with the cost of a new battery typically ranging from $5 to $20. If the keyless entry transmitter itself needs to be replaced, the cost can range from $50 to $200, including the cost of the new transmitter and labor for programming it to work with the vehicle.

Need more information about the B310E code?

Need more information on how to fix the B310E code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B310E code diagnosed by a professional: Find a repair shop in your area

Code B310E Information for Specific Makes

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 B310E Code

1. What are common symptoms of OBDII code B310E (Keyless Entry Transmitter 7 Battery)?

The common symptoms include the keyless entry remote not working, difficulty locking or unlocking the vehicle, and a warning light on the dashboard related to the keyless entry system.

2. What causes OBDII code B310E to be triggered?

The code B310E is triggered when the keyless entry transmitter 7 battery is low or needs replacement. This can happen over time due to normal wear and tear.

3. How can I diagnose a keyless entry transmitter 7 battery issue?

You can diagnose a keyless entry transmitter 7 battery issue by testing the battery with a multimeter to check its voltage. If the voltage is low or inconsistent, it may need to be replaced.

4. Can I replace the keyless entry transmitter 7 battery myself?

Yes, replacing the keyless entry transmitter 7 battery is usually a straightforward process that can be done yourself. Refer to your vehicle's manual for instructions on how to access and replace the battery.

5. Are there any special considerations when replacing the keyless entry transmitter 7 battery?

Make sure to use the correct type and size of battery recommended by the vehicle manufacturer. Additionally, handle the keyless entry transmitter carefully to avoid damaging it during the battery replacement process.

6. How often should I replace the keyless entry transmitter 7 battery?

The keyless entry transmitter 7 battery typically lasts for a few years before needing replacement. However, if you notice decreased performance or responsiveness from the keyless entry system, it may be time to replace the battery.

7. Will replacing the keyless entry transmitter 7 battery reset the OBDII code B310E?

Once the keyless entry transmitter 7 battery is replaced, the OBDII code B310E should be cleared from the system. If the code persists, further diagnosis may be needed.

8. Can a low keyless entry transmitter 7 battery cause other issues in the vehicle?

A low keyless entry transmitter 7 battery may not directly cause other issues in the vehicle, but it can affect the operation of the keyless entry system, leading to inconvenience and potential security concerns.

9. Is it necessary to reprogram the keyless entry transmitter after replacing the battery?

In most cases, replacing the keyless entry transmitter 7 battery does not require reprogramming the keyless entry remote. However, refer to your vehicle's manual for specific instructions or consult a professional if needed.

10. What should I do if replacing the keyless entry transmitter 7 battery does not resolve the issue?

If replacing the keyless entry transmitter 7 battery does not resolve the problem, there may be an underlying issue with the keyless entry system that requires further diagnosis by a qualified mechanic or dealership.

Discuss the causes and fixes for B310E OBDII Code

Code B310E comments

No comments found for this page.