Can You Still Drive If Your Key Fob Dies? You Have to Know It!

Published on: September 30, 2022
Written by Chris Dominic / Fact-checked by Nova Scarlett

If your car key fob dies, you may still be able to drive your car. However, you will need to take extra precautions to ensure that your car does not get stolen. You should park your car in a well-lit area and keep an eye on it at all times.

can you still drive if your key fob dies

If possible, you should also leave the windows down so that passersby can see inside the car.

  • If your key fob dies, you can still drive your car by using the physical key that is inside of the fob;
  • To do this, simply insert the key into the ignition and turn it to the “on” position;
  • This will allow you to start your car and drive it as normal, even though your key fob is not working;
  • Keep in mind that you will not have access to any of the features that are controlled by the key fob, such as remote start or locking/unlocking the doors;

What Happens If Key Fob Dies While Driving?

If your key fob dies while you’re driving, there are a few things that could happen. First, if you have a push-button start, your car will likely just stop running. This is because the key fob is necessary to start the engine.

If you don’t have a push-button start, then your car will continue to run until you turn it off with the key. However, you won’t be able to lock or unlock your doors, so keep that in mind if you need to make a quick exit. In either case, it’s always best to have a spare key fob on hand just in case!

Can a Bad Key Fob Cause Car to Stall?

A key fob is a small, hand-held device that is used to unlock and lock a car. It usually contains a transponder chip that sends a signal to the car’s ignition system, which allows the car to start. If your car has an electronic key fob, it likely won’t unlock the doors if the battery is dead

If your key fob is not working properly, you should take it to a qualified mechanic or dealership service department for diagnosis and replacement.

How to Replace Key Fob Battery?

If your car key remote has stopped working, it might just be a matter of replacing the battery. Here’s how to do it:

Start by taking off the rubber cover on the back of the remoteYou should see a small screw or clip holding it in place
Use a small screwdriver or knife to pry open the caseBe careful not to damage any of the delicate electronics inside
Find the old battery and note its orientation before removing itYou’ll need to install the new one in the same way
Insert the new battery and close up the case firmly but gently until it snaps shutIf there’s a screw, replace and tighten that too
At lastPut the rubber cover back on and test out your remote!

How to Charge Dead Key Fob?

Your key fob is an essential part of your life, keeping you connected to your car. But what happens when it dies? If your key fob has a dead battery, there are a few things you can do to get it working again.

First, check the battery. If the battery is dead, you’ll need to replace it. You can find replacement batteries at most hardware stores or online. It’s important to know that there is no specific battery that you need for your Mercedes key fob.

Once you have a new battery, open up your key fob and insert it into the correct slot. Be sure to orient the battery correctly before closing up your key fob. If replacing the battery doesn’t work, there may be another issue with your key fob.

One possibility is that the electronic components inside your key fob have gone bad and need to be replaced. This is something best done by a professional, so take your key fob to a qualified technician for further diagnosis and repair.

How Long Does a Key Fob Battery Last?

A key fob battery typically lasts between one and four years. The lifespan of a key fob battery depends on several factors, including the type of battery used and how often the key fob is used. There are two types of batteries commonly used in key fobs: lithium-ion batteries and alkaline batteries (the first commercially successful alkaline batteries were invented in 1896 by French chemist Georges Leclanche).

Lithium-ion batteries tend to have a longer lifespan than alkaline batteries, but they are also more expensive. The frequency with which a key fob is used also affects its battery life. If a key fob is used regularly, its battery will drain faster than if it is only used occasionally.

Additionally, if a key fob is left in direct sunlight or in a hot car for extended periods of time, its battery life may be reduced. To prolong the lifespan of a key fob battery, it is important to avoid excessive use and exposure to extreme temperatures. Additionally, some manufacturers recommend replacing the entire key fob unit every few years to ensure optimal performance.

How to Start Car With Key Fob from Outside?

how to start car with key fob from outside

If you’re like most people, you probably don’t think too much about your car key fob. But did you know that there’s a way to start your car with the key fob from outside? Here’s how it works:

1. Get in your car and close the door.

2. Put the key fob in the slot on the dash next to the steering wheel.

3. Push and hold the button on the key fob for three seconds.

4. Start your engine! This feature can come in handy if you ever find yourself locked out of your car or if you need to start it from a distance (like if it’s in a parking garage).

So next time you’re fumbling with your keys, remember this little trick!

Key Fob Unlocks But Won’t Start Car

If your car key fob unlocks your car but won’t start it, there are a few things you can do to troubleshoot the issue. First, check the battery in your key fob. If it’s low, replace it with a new one and see if that solves the problem.

If not, there could be an issue with the key itself. Try using another key if you have one, or taking your key to a locksmith or dealership to have it checked out. In some cases, the problem may be with the ignition switch in your car.

This is usually only the case if your car has a push-button start; if so, try holding down the button for a longer period of time when starting your car. If none of these solutions work, there could be an issue with another part of your car’s electrical system; in this case, it’s best to take your car to a mechanic or dealer for diagnosis and repair.

Why is There a Key in My Key Fob?

Most people don’t know why there’s a key in their key fob. After all, it’s not like you can use it to start your car or open your door. So what is this little key for?

The answer is actually quite simple. The key in your key fob is a backup in case your electronic key fails. If your battery dies or you have some other issue with your electronic key, you can use the physical key to unlock your car doors and get inside.

So next time you see that tiny key, remember that it could be the difference between being stranded outside of your car or getting where you need to go.

why is there a key in my key fob

Quick Facts

Can I Drive If My Key Fob Battery is Low?

If your key fob battery is low, you may still be able to drive your car. However, you may not be able to lock or unlock your doors or start the ignition. You may also find that your car’s lights and other electronics do not work properly.

If your key fob battery is completely dead, you will not be able to drive your car at all.

Will a Dead Key Fob Cause Car Not to Start?

No, a dead key fob will not cause a car not to start. If the key fob is dead, you will just need to use the physical key to unlock the doors and start the ignition.

What Do You Do When Your Key Fob Battery Dies?

If your key fob battery dies, you can still enter your car manually with the key. If your car has power locks, you will need to unlock the door manually as well. Once you’re inside the car, you can put the key in the ignition and start the engine.


If your key fob dies, you can still drive your car. However, you will need to use the physical key to unlock the door and start the engine. Once you are underway, you can use the key fob to lock and unlock the doors as usual.

If your key fob has a panic button, it will not work if the key fob is dead.

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