A malfunctioning remote start system coupled with a illuminated check engine light can be frustrating. This comprehensive guide will help you diagnose the problem, offering potential solutions and saving you a potential costly trip to the mechanic. We'll explore common causes and provide troubleshooting steps to get your remote start working again.
Why Isn't My Remote Start Working?
There are several reasons why your remote start might fail to function. The check engine light adds another layer of complexity, indicating a potential underlying issue within your vehicle's system. Let's delve into the possibilities:
1. Low Battery: The Most Common Culprit
This is often the easiest fix. A weak battery in your car or the remote itself can prevent the remote start from engaging.
- Check the Car Battery: Use a multimeter to test the car battery's voltage. It should read around 12.6 volts when fully charged. If it's significantly lower, jump-start your car or replace the battery.
- Check the Remote Battery: Replace the battery in your remote starter fob. This is a quick and inexpensive fix that often solves the problem.
2. Faulty Remote Start System
A problem with the remote start system itself is a more serious possibility. This could involve issues with:
- Wiring: Loose, damaged, or corroded wiring can interrupt the signal. A thorough visual inspection of the wiring harness is necessary.
- Control Module: The remote start module itself could be malfunctioning. This often requires professional diagnosis and repair.
- Antenna: A faulty antenna in your vehicle can prevent the signal from reaching the module.
3. Issues Related to the Check Engine Light
The check engine light is a crucial indicator of a potential problem within your vehicle's engine. Several issues illuminated by the check engine light could interfere with remote start functionality. These issues often stem from:
- Sensor Problems: Faulty sensors (like the crankshaft position sensor or camshaft position sensor) can disrupt the engine's operation and prevent remote start.
- Engine Issues: Problems like a misfire or other engine malfunctions can prevent the vehicle from starting remotely. The remote start system is often designed to avoid starting the vehicle if it detects a potential problem.
- Transmission Issues: Similar to engine problems, transmission difficulties could trigger a safety mechanism that prevents remote starting.
4. Security System Interference
Your vehicle's security system could be interfering with the remote start. This might be due to:
- Faulty Alarm System: A malfunctioning alarm system might prevent the remote start from activating.
- Incorrect Key Fob Programming: If your key fob isn't properly programmed, it won't communicate correctly with the remote start system.
How Can I Troubleshoot My Remote Start?
1. Diagnose the Check Engine Light: Use an OBD-II scanner to read the diagnostic trouble codes (DTCs). This will give you a clearer understanding of the underlying issue causing the check engine light.
2. Check for Obvious Issues: Inspect the remote's battery, the car's battery, and the wiring harness for any visible damage. Look for loose connections or corrosion.
3. Test the Remote's Range: Try the remote start from different locations to see if the range is affected.
4. Consult Your Owner's Manual: Your owner's manual may provide specific troubleshooting steps for your vehicle's remote start system.
5. Seek Professional Help: If you're unable to diagnose and fix the problem, consult a qualified mechanic or automotive specialist. They have the tools and expertise to diagnose complex issues.
What if My Remote Start Still Isn't Working?
If you've tried all the basic troubleshooting steps and the remote start is still not working, it's highly recommended to consult a professional mechanic. They have the diagnostic tools and expertise to pinpoint the exact problem and perform the necessary repairs.
This comprehensive guide offers a step-by-step approach to troubleshooting your remote start issue and addressing the accompanying check engine light. Remember that safety is paramount, and if you're unsure about any repair, seek professional assistance.
