Emergency Key in Key Fob: How to Unlock Your Car When the Remote Stops Working
You’re heading to your car, you press the remote… and nothing happens. The doors stay locked. It’s frustrating, but don’t worry, it happens more often than you think, and there is another way to open your car using the emergency key inside of the key fob.
In many cases, the reason is simple: a dead battery inside the key fob. The good news is your car key fob usually includes a backup called the emergency key which is located inside of the key fob. Knowing how to use it can save you time, stress, and money.
What Is the Emergency Key in a Key Fob?
Most modern key fobs include a hidden metal key blade inside. This is the emergency key. It allows you to manually unlock your car door if the remote stops working.
How to Use the Emergency Key to Unlock Your Car
- Remove the emergency key from the fob (look for a small release button or latch).
- Find the lock cover on your car door handle (many vehicles have a small plastic cap near the keyhole).
- Pop the cover off gently (use the edge of the key or a plastic trim tool).
- Insert the key and turn to unlock the door.
this is an example for Mazda smart key Mazda owner’s manual: unlocking using the auxiliary key when the key does not operate
It’s simple — but only if your emergency key is already cut and ready.
Important: Make Sure Your Emergency Key Is Cut
Many people don’t realize this: the emergency key blade inside the remote can be blank when it comes from the dealership or manufacturer. That means it won’t unlock anything until it’s professionally cut to match your vehicle.
That’s why we recommend getting it cut before you actually need it.
Why This Happens (Common Causes)
- Dead key fob battery
- Damaged or broken key fob
- Signal interference or electronic malfunction
- Water damage or internal wear
No matter the cause, it always seems to happen at the worst time — which is exactly why having a working emergency key matters.
Related: Pick fuel tank lock
What You Should Do Now
✅ Make sure your emergency key is cut
✅ Test it once on your door before an emergency
✅ Replace your key fob battery every 1–2 years
✅ Keep a spare key in a safe place that you would remember.
Stuck Outside? Call Public Locksmith (704-905-6600)
If your remote stops working and you don’t have a working emergency key, Public Locksmith is here to help. We can assist with car lockouts and emergency key cutting (when supported by your vehicle/key type) and get you back on the road quickly and professionally.
✅ Fast Response
✅ No Damage (when possible)
✅ Affordable Rates
✅ Professional service You Can Trust
Call: 704-905-6600