Understanding Remote Start Disturbances: Causes & Solutions

Remote start systems have revolutionized vehicle convenience, allowing users to start their cars from a distance. However, despite their benefits, these systems may experience disturbances that prevent them from functioning properly. Understanding the causes and solutions of remote start disturbances can help users maintain reliability and efficiency.

Common Causes of Remote Start Disturbances

1. Weak or Dead Key Fob Battery

Cause: The remote start system relies on the key fob to send signals. A weak or dead battery in the fob can prevent communication with the vehicle.

Solution: Replace the key fob battery with a new one. Most key fobs use CR2032 or CR2025 batteries, which are inexpensive and widely available.

2. Interference from Other Signals

Cause: Wireless interference from devices such as Wi-Fi routers, mobile phones, or radio towers can disrupt the communication between the key fob and the vehicle.

Solution: Try using the remote start system in a different location, away from high-signal areas. If the problem persists, consider switching to a remote system with an enhanced signal range.

3. Low Car Battery Voltage

Cause: A weak or dying car battery may not provide enough power for the remote start system to function properly.

Solution: Check the battery voltage using a multimeter. If the voltage is below 12.4V, charge the battery or replace it if necessary.

4. Hood or Door Not Fully Closed

Cause: Most remote start systems have built-in safety features that prevent them from working if the hood or doors are not securely closed.

Solution: Ensure all doors, the trunk, and the hood are fully closed before attempting to use the remote start feature.

5. Faulty Brake or Parking Sensors

Cause: Remote start systems are designed to prevent accidental engine starts if the car is not in a safe condition. If the parking brake sensor or brake pedal sensor is faulty, it may block the system from working.

Solution: Have the sensors inspected and replaced if necessary. A professional mechanic can diagnose the issue using a diagnostic scanner.

6. Software or Firmware Issues

Cause: Some remote start systems may require periodic software updates to maintain compatibility with the vehicle's onboard computer.

Solution: Check with your remote start system manufacturer or dealership for any available firmware updates.

7. Check Engine Light is On

Cause: If the vehicle has an active check engine light, the remote start system may be disabled as a precautionary measure.

Solution: Use an OBD-II scanner to diagnose and fix the issue triggering the check engine light. Once the problem is resolved, the remote start system should function normally.

How to Troubleshoot Remote Start Issues

Step 1: Check the Key Fob

• Replace the battery in the key fob.
• Try using a backup key fob if available.
• Stand closer to the vehicle and press the remote start button.

Step 2: Inspect the Vehicle Battery

• Measure the battery voltage using a multimeter.
• Charge or replace the battery if the voltage is low.

Step 3: Ensure Safety Features are Engaged

• Close all doors, the trunk, and the hood securely.
• Check that the parking brake is fully engaged.

Step 4: Scan for Error Codes

• Use an OBD-II scanner to check for error codes related to the engine or security system.

Step 5: Look for Signal Interference

• Try using the remote start in a different location.
• Remove electronic devices that may cause interference.

Preventing Future Remote Start Problems

1. Regularly Maintain Your Vehicle

Keeping up with regular maintenance ensures that all components work properly and prevents potential remote start issues.

2. Keep the Key Fob Battery Fresh

Replace your key fob battery every 12–18 months to maintain optimal performance.

3. Update Software When Available

Stay informed about firmware updates for your remote start system and install them when needed.

4. Protect Against Signal Interference

Avoid using your remote start near radio towers or high-frequency devices that can block signals.

Conclusion

Understanding remote start disturbances and their solutions can help car owners enjoy uninterrupted convenience. Regular maintenance, timely battery replacements, and addressing software updates can significantly improve the reliability of remote start systems. If issues persist, seeking professional assistance is always a smart choice.

For high-quality remote start systems and expert advice, visit Optistart Remote today!