Security Light Flashing & Car Won’t Start? 6 Easy Fixes!

Is your **security light flashing and your car won't start?** Before calling a mechanic or replacing expensive parts, there are several things you can check yourself. In this Fixpro Garage video, we'll explain **why the security light flashes when your car won't start** and show you 6 important things to check, including the key, key fob battery, 12V car battery, immobilizer reset or key relearn, starting system, and diagnostic trouble codes. We'll also explain the difference between a **no-crank** and **crank-but-won't-start** condition and why your vehicle's immobilizer or anti-theft system may be involved. ### In this video you'll learn: ✅ Why the security light is flashing ✅ How the immobilizer system works ✅ How to check your car key ✅ When to replace the key fob battery ✅ How a weak car battery can cause starting problems ✅ How to find the correct immobilizer reset procedure ✅ Why key relearn procedures vary by vehicle ✅ No-crank vs. crank-no-start ✅ How to scan for immobilizer and BCM-related problems ✅ What to check before replacing expensive parts ⚠️ **Important:** Immobilizer and key-relearn procedures vary by year, make, and model. Always check your owner's manual or manufacturer service information for the correct procedure for your specific vehicle. If your **security light is flashing, anti-theft light is on, and your car won't start**, this troubleshooting guide can help you narrow down the problem before spending money on unnecessary repairs. Subscribe to **Fixpro Garage** for more DIY car repair, warning-light explanations, troubleshooting tips, and automotive diagnostic guides. 👍 If this video helped you, don't forget to Like, Comment, and Subscribe! #SecurityLight #CarWontStart #Immobilizer #AntiTheft #CarRepair #CarTroubleshooting #DIYCarRepair #CarProblems #Automotive #FixproGarage