Finding yourself locked out of your car due to a dead key fob battery is a common yet frustrating experience for drivers. Just when you’re ready to go, you press the unlock button, and nothing happens. As automotive experts at keyfobx.com, we understand this inconvenience and are here to provide you with a comprehensive guide on how to unlock your car with a dead key fob and get back on the road.
Simple First Steps to Try
Before you panic, there are a couple of straightforward methods you can attempt immediately. Often, a key fob battery isn’t completely dead but simply weakened. In such cases, a little repositioning might be all it takes.
Move Closer to Your Car: Sometimes, a low battery in your key fob just needs a stronger signal connection. Try standing right next to your car door, as close as possible to the sensor, and attempt to unlock it again. Obstructions or distance can weaken the signal, so proximity can sometimes do the trick when the battery is just weak.
Use the Manual Key: In this age of advanced technology, it’s easy to forget the basics. Most modern key fobs actually house a physical, traditional key within them. Look for a small button or release catch on your key fob. Press or slide this to reveal the hidden manual key. This key can be inserted into the car door lock, just like in older car models, to manually unlock the vehicle.
Car Key Fob with Manual Key
Getting Inside and Starting Your Car
Once you’ve gained entry using the manual key, you might wonder how to start your car, especially if it has a push-button start system. Here’s what you need to know:
Unlocking the Door Manually: Insert the physical key into the driver’s side door lock. Turn the key as you normally would to unlock the door. In some cars, you may need to turn the key twice to disengage the alarm system fully. Be prepared for the car alarm to sound if it doesn’t recognize the manual unlocking immediately. Usually, starting the car will deactivate the alarm.
Starting the Engine with a Dead Fob: Modern cars with push-button start are designed to still function even with a dead key fob battery. They often use a short-range radio frequency identification (RFID) chip that doesn’t rely on the fob’s battery for starting.
- Locate the Backup Start Method: Refer to your car’s owner manual for the specific procedure, but generally, you’ll need to place the key fob very close to the start button or steering column. Some vehicles have a designated spot, often marked, where you need to hold the fob.
- Try Placing the Fob Near the Start Button: Hold the key fob directly against the start button and press the button as you normally would to start the engine. The car should detect the RFID chip and start.
- Check for a Key Fob Slot: Some vehicles have a backup slot, often located in the steering column or glove compartment, where you can insert the entire key fob. This ensures the car reads the RFID chip for ignition.
Remote and Alternative Unlock Solutions
If manual methods aren’t working or accessible, there are other options you can explore, particularly with newer vehicle models.
Car Manufacturer Apps and Remote Unlock: Many modern vehicles come with companion smartphone apps that offer remote control features. Check if your car manufacturer has an app that allows you to remotely lock or unlock your car using your smartphone. You may need to set this up beforehand, but it can be a lifesaver in situations like a dead key fob battery. Some manufacturers also offer a service where you can call their support center, and they can remotely unlock your car after verifying your ownership.
Roadside Assistance: If all else fails, and you are still unable to unlock your car, it’s time to call for roadside assistance. If you have roadside assistance coverage through your car insurance or a separate provider like AAA, they can send someone to help you unlock your car. They have various tools and methods to gain entry without damaging your vehicle.
Key Fob Battery Replacement: The Long-Term Solution
While the methods above will help you get into your car and start it, they are temporary solutions. To restore full functionality to your key fob, replacing the battery is essential.
Identifying the Correct Battery: Key fobs typically use small, coin-shaped lithium batteries. The most common types are CR2032 and CR2025. You can find the exact battery type your key fob requires by:
- Checking your owner’s manual: The manual usually specifies the battery type for your key fob.
- Opening the key fob: Carefully open your key fob (usually requires a small Phillips head screwdriver or a flathead screwdriver to pry it open – consult your manual for instructions). The battery type is printed directly on the battery itself.
DIY Battery Replacement: Replacing a key fob battery is usually a simple DIY task:
- Open the Key Fob: Use a small screwdriver to carefully open the fob casing.
- Remove the Old Battery: Take out the old battery, noting the orientation (+ side up or down).
- Insert the New Battery: Place the new battery in the same orientation as the old one.
- Close the Key Fob: Snap the key fob casing back together securely.
If you’re uncomfortable performing this yourself, or if you suspect the issue might not be just the battery, seek professional help.
Professional Battery Replacement and Fob Issues: Car parts retailers or dealerships can replace your key fob battery for a small fee. If a new battery doesn’t solve the problem, the key fob itself might be faulty. In such cases, contacting your car manufacturer or a qualified locksmith is recommended to arrange for a key fob replacement or reprogramming.
Don’t let a dead key fob battery derail your day. By understanding these methods, you can confidently unlock your car and get back on your way. And remember, regularly replacing your key fob battery is a simple piece of maintenance that can prevent this inconvenience in the future. For more car care tips and expert advice, visit keyfobx.com – your trusted resource for automotive solutions.
