Does Remote Start Cause Check Engine Light Issues?: 1 Minute to Understand How Remote Starts Impact Your Check Engine Light

Remote start systems have become increasingly popular for the convenience they offer, especially in harsh weather conditions. However, some car owners worry that installing or using a remote start might cause their check engine light (CEL) to illuminate. The check engine light is a key indicator that something isn’t functioning as it should within your vehicle’s engine or related components. In most cases, a properly installed and compatible remote start system does not inherently cause the check engine light to come on. Issues typically arise from improper installation, incompatibility with a vehicle’s built-in sensors, or interference with the onboard diagnostic system. For example, poor connections with the wiring harness, bypassed security systems, or failure to integrate with certain advanced engines can all potentially trigger a warning light. If your check engine light comes on after using or installing a remote starter, it’s critical to have both the code scanned and the installation inspected by professionals to pinpoint the root cause. Because every vehicle model and design is unique, ensuring all systems—including electrical and security—remain harmonious is non-negotiable. 

As a designer, I’m always thinking about the harmony of systems, whether that’s in a home or under the hood of a car. When integrating new technology or features—similar to choosing the right lighting or reorganizing a kitchen layout—compatibility and careful installation are key. That’s why, whether it’s a home’s interior design or your car’s electronics, thoughtful planning and professional expertise are essential for seamless, trouble-free results.

Tips 1:

If you’re considering a remote start system, always opt for professional installation, and check that the system is designed specifically for your vehicle’s make and model. This attention to detail greatly reduces the risk of electrical issues or warning lights.

FAQ

Q: Can an aftermarket remote starter void my car’s warranty?

A: Not necessarily. As long as the system is installed correctly and does not cause damage, most warranties remain valid. Always check with your manufacturer or dealer first.

Q: Why does my check engine light come on after using the remote start?

A: Possible reasons include installation errors, compatibility issues, or electrical interference. Have a technician read the diagnostic code for an accurate answer.

Q: Is it safe to drive my car if the check engine light comes on after using remote start?

A: It’s best to get the vehicle checked as soon as possible. If the car runs normally and there’s no blinking light, it may not be an emergency, but diagnosis is important.

Q: Do factory-installed remote starts cause fewer issues than aftermarket ones?

A: Factory systems are designed for the specific vehicle, so they tend to be more reliable. Aftermarket systems can work well too—with professional installation.

Q: Can removing a remote starter turn off the check engine light?

A: If the remote starter was causing the issue, removing it may solve the problem. However, you will likely need to reset the light or clear error codes afterward.