Will Remote Start Work with the Engine Light On?
Remote start systems are a convenient feature that allows you to start your car from a distance, offering comfort on cold mornings or when you need to warm up your vehicle. However, many car owners wonder whether a remote start will still work if the check engine light (CEL) is on. In this article, we will explore how the engine light affects the functionality of remote start systems and what it means for your car.
What is Remote Start?
A remote start system allows you to start your vehicle from a distance, typically using a key fob or a smartphone app. This system is designed to make it easier to warm up or cool down the cabin before entering the vehicle, especially during extreme weather conditions. Remote start is typically available on newer cars or as an aftermarket addition.
How the Check Engine Light Affects Your Car
The check engine light is an indicator that your car’s onboard diagnostics (OBD) system has detected an issue with the engine, transmission, or another critical component. When the CEL is on, it could signal a wide range of problems, from something as minor as a loose gas cap to more serious issues like a malfunctioning oxygen sensor or catalytic converter.
Does the Engine Light Prevent Remote Start from Working?
1. Remote Start May Be Disabled by the Car’s Computer
In many modern vehicles, the remote start system is integrated with the car’s onboard computer system, which monitors the health of various components. If the check engine light is illuminated, the car’s computer may prevent the remote start from working. This is a safety feature designed to protect the vehicle from further damage. If the vehicle’s computer detects a serious issue that could lead to engine damage or unsafe operation, remote start will often be disabled until the problem is resolved.
2. It Depends on the Severity of the Issue
In some cases, the remote start may still work with the check engine light on if the issue is minor. For example, if the check engine light is triggered by a loose gas cap or a minor sensor issue, the vehicle may still allow the remote start to operate. However, if the issue is more severe, such as a misfire, overheating, or a significant engine problem, the car’s system may disable the remote start as a precautionary measure.
3. Some Vehicles Have a Manual Override
Certain remote start systems may have a manual override option that allows the car to start even if the check engine light is on. However, this feature is usually available only on aftermarket remote start systems, and it is important to note that using it could lead to further engine damage. If you are unsure, it’s best to address the check engine light issue before attempting to use the remote start system.
What Should You Do If Your Check Engine Light is On and Remote Start Doesn’t Work?
If you notice that your car’s remote start is not working and the check engine light is on, follow these steps:
1. Diagnose the Problem
Use an OBD-II scanner to read the error codes stored in your vehicle’s computer. This can give you an idea of the issue triggering the check engine light. Many auto parts stores offer free diagnostic services to read the codes. If you’re unsure how to interpret the codes, a professional mechanic can help.
2. Resolve the Issue
If the check engine light is on due to a minor issue, such as a loose gas cap or a small sensor problem, addressing the issue could resolve both the CEL and the remote start issue. For more serious problems, it’s best to have your car inspected and repaired by a mechanic.
3. Reset the Check Engine Light
In some cases, the check engine light may remain on even after the issue is resolved. You can use an OBD-II scanner to clear the codes, or you can disconnect the car’s battery for a few minutes to reset the system. However, if the problem persists, it’s important to have the car checked by a professional.
Can I Use Remote Start with a Blinking Check Engine Light?
If the check engine light is blinking, this is a sign of a more serious issue, such as an engine misfire or a problem with the fuel or exhaust systems. A blinking CEL indicates that the issue is severe and requires immediate attention. In this case, remote start will almost certainly be disabled to prevent further engine damage. Driving the car with a blinking check engine light can cause significant damage to the engine, so it’s crucial to address the problem as soon as possible.
Conclusion
While some vehicles may allow the remote start to work with the check engine light on, it’s generally not advisable to rely on remote start when your vehicle’s diagnostics indicate a problem. The check engine light could be signaling an issue that may cause further damage if left untreated. It’s always best to address the underlying problem first to ensure your vehicle is in proper working condition and to avoid compromising the performance or safety of the engine.
Frequently Asked Questions (FAQs)
1. Will the remote start work if the check engine light is on for a minor issue?
Yes, in some cases, if the issue is minor (like a loose gas cap or a small sensor issue), the remote start may still work. However, it depends on the vehicle’s computer system and the severity of the problem.
2. Can I use the manual override on my remote start if the check engine light is on?
Some aftermarket remote start systems have a manual override that allows you to start the car even if the check engine light is on. However, it’s not recommended to use this feature without addressing the underlying problem, as it could cause further damage to the engine.
3. What should I do if my car’s remote start isn’t working due to the check engine light?
You should first diagnose the issue using an OBD-II scanner, resolve the problem, and then reset the check engine light. If the problem persists, take your car to a mechanic for a proper inspection and repair.
4. Will remote start work if my check engine light is blinking?
No, if your check engine light is blinking, this is a sign of a serious engine problem. Remote start will typically be disabled to prevent further damage to the engine. You should address the issue immediately.
5. How do I reset my check engine light?
You can use an OBD-II scanner to clear the error codes or disconnect the vehicle’s battery for a few minutes to reset the system. However, if the issue is not fixed, the light will likely come back on.
