Diagnosing a 2007 Infiniti G35 that won't turn off can be frustrating. This issue typically arises from several common electrical or mechanical failures. Understanding the potential causes and solutions is essential for effective troubleshooting.

Common Causes of Shutdown Issues

The primary reasons a 2007 Infiniti G35 may not turn off include:

  • Faulty Ignition Switch: A malfunctioning ignition switch can fail to disconnect power, keeping the engine running even when the key is removed.

  • Stuck Relay: If the ignition relay is stuck closed, it may continuously supply power to the engine control module (ECM), preventing the car from shutting down.

  • Electrical Problems: Issues within the electrical system, such as damaged wiring or a malfunctioning body control module (BCM), can also lead to this problem.

  • Aftermarket Modifications: Sometimes, aftermarket remote start systems or alarms can interfere with normal operation, causing the vehicle to remain powered on.

Troubleshooting Steps

To diagnose and fix the issue, follow these steps:

1. Check the Ignition Switch: Inspect the ignition switch for wear or damage. If it feels loose or unresponsive, it may need replacement.

2. Inspect Relays: Locate the ignition relay in the fuse box and test it. If it's stuck closed, replacing it should resolve the issue.

3. Examine Electrical Connections: Look for any damaged wiring or loose connections in the ignition system. Repair or replace any faulty components.

4. Disconnect Battery: As a temporary fix, disconnecting the battery can shut off the engine. However, this does not solve the underlying problem.

5. Consult a Mechanic: If troubleshooting does not resolve the issue, consult a professional mechanic for a comprehensive diagnostic.

Important Considerations

  • Safety First: Always ensure that the vehicle is in a safe position before performing any checks or repairs.

  • Document Symptoms: Keep track of when and how often this issue occurs, as this information can help mechanics diagnose more effectively.

  • Regular Maintenance: Regularly scheduled maintenance can help prevent electrical issues from developing.

FAQs About 2007 Infiniti G35 Shutdown Issues

    • What should I do if my car won't turn off?
      Start by checking the ignition switch and relays for faults.
    • Can I fix this issue myself?
      Basic checks can be done at home, but complex electrical issues may require professional help.
    • Will disconnecting the battery fix my problem?
      Disconnecting the battery will stop the engine temporarily but won't solve underlying issues.