dodge journey 2012 key fob

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2012 Dodge Journey Smart Key 3B Fob FCC# M3N-40821302 - Aftermarket

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2012 Dodge Journey Smart Key 3 Buttons Fob FCC# M3N-40821302 - 434 MHz

• Replacement Keyless Entry Remotes and Key fobs for Cars and Trucks (picture might show FRONT and BACK of the same key remote).
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Note: Some key fobs may look the same, but they may have different frequencies, capabilities, or keyways. Pay attention when choosing the right replacement. If you don't see an exact match, contact us.

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Dodge Journey Key Fobs

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Welcome to our collection of Dodge Journey key fobs, keyless entry remotes, and keys. We offer a variety of high-quality replacement keys and remotes for your Dodge Journey, providing you with peace of mind and security when you're on the road. Our selection of key fobs and keyless entry remotes are designed to work seamlessly with your vehicle's security system, ensuring that you can easily and conveniently access your car without any hassle.

The Dodge Journey has been a popular SUV in the United States for many years. Known for its spacious interior, comfortable ride, and excellent safety features, the Dodge Journey has become a top choice for families and commuters alike. Some of the most popular submodels of the Dodge Journey include the SE, SXT, Crossroad, and GT. Each of these models offers unique features and capabilities to suit the needs of different drivers.

At our online store, we understand the importance of having reliable keys and remotes for your Dodge Journey. That's why we offer only the highest quality products at competitive prices. Whether you're in need of a replacement key fob, a new keyless entry remote, or just a spare key, we have everything you need to keep your Dodge Journey running smoothly. Shop with us today and experience the convenience of having a reliable set of keys for your vehicle.

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Receiver Modules, Keys & Key Fob fit your 2012 Dodge Journey

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2012 Dodge Journey

Here are all the available car keys, keyless entry remote fobs, remote batteries and accessories for the 2012 Dodge Journey.   Use the information on the product page to verify that this is the correct key or remote for your vehicle.

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Dodge Journey Key Fob Battery Remote Replacement (2009 – 2021)

How to replace the dodge journey “rounded” key fob battery (2011-2021).

• 1x CR2032 battery
• A flat-head screwdriver

How to Replace the Dodge Journey “Teardrop” key Fob Battery (2009, 2010)

Frequently Asked Questions

Do i need to reprogram my key after changing the key fob battery, is it difficult to change a key fob battery yourself, how much does it cost to change a dodge journey keyless entry key fob battery, how often should keyless entry remote batteries be replaced, h ow do i know if my keyless entry remote dodge key fobs need a new battery.

Dodge Journey Key Not Detected: Causes & Fixes

The “Key Not Detected” on your Dodge Journey is a warning sign often associated with issues with the key fob. It will normally pop up when the driver attempts to switch on the vehicle, and the computer system cannot pick up a signal from the key fob. 

The warning message will come if any factor disrupts the communication between the key fob and the ECM. Once the push-start button is pressed and the key’s signal is not detected, the vehicle will not come, and the error will come up. Many factors could stop the vehicle from picking up signals from the key fob. These factors include dead key battery, damaged receiver module, dead car battery, and more. 

We will examine what a “Key Not Detected” means in a Dodge Journey. Also, explore the causes of this issue and how it could be fixed.

Meaning of Dodge Journey Key Not Detected

A Dodge Journey “Key Not Detected” is a warning message showing that the vehicle cannot communicate with the key fob, especially when you try to start the car.

What is a key fob? If you are unfamiliar with the term, it is a device that opens and unlocks the vehicle. Its most important function is its ability to start the car through the push-to-start function. 

The Push-to-start function in the Dodge Journey uses low-frequency communication. Once the start button is pressed, the engine computer picks up a signal from the key fob, which should be in the car at the time. 

Once the computer picks up the signal, the ECM sends power to the engine for ignition.

Sometimes, the computer system does not pick up any signal from the key fob. Check the key fob and ensure it is in the vehicle; if it is, there is an issue with the device. 

Without the ECM picking up signals from the key fob, the engine will not start. 

Causes of Dodge Journey Key Not Detected 

Many factors could cause a “Key Not Detected” warning message on your Dodge Journey dashboard. In most cases, it is an issue with the key fob. However, other issues could be responsible for the warning message, like damaged receiver modules. 

Below are some of the major causes of “key Not Detected.”

Dead key fob battery 

A major cause of the warning message “key Not Detected” is a dead battery. The Key fob uses a small button-like battery that powers it; unfortunately, it is not designed to last forever. 

The key fob battery will weaken and must be replaced at a certain point. You will notice the need to change the battery when the range of the key reduces. Now, you must draw closer to the car to open or close the door or press the button multiple times. 

You could also get a notification of the low battery on the dashboard of your Dodge Journey. 

Receiver module issues or interference 

Another cause of the “key Not Detected” warning message is when the receiver module is not working as it should. 

What is the receiver module? A device inside the vehicle receives signals from the key fob. It then sends signals to other components depending on whether to open or lock the door or trunk and start the engine. 

Sometimes, the signal from the key fob may be interfered with by other radio waves that do not allow the module to pick up the right signals. In other cases, the module might be damaged and unable to pick up any frequency. 

Water damage to the key fob 

If you expose your key fob to water, it could cause serious damage. You need to understand that the key is an electrical device, and it is not designed to be waterproof and will get damaged if exposed to a certain amount of water. 

Dead vehicle battery 

A dead Dodge Journey battery will stop the receiver module from picking up the key fob signal. The module receives power from the battery to function. Once there is no power flowing to the module, it will not work. 

Until the battery is charged, you cannot access and switch on the vehicle using the keyfob. 

Worn-out key fob 

The key fob will get worn out after long usage due to exposure to dirt, moisture, and other working conditions. 

You will notice that the key fob is worn when the buttons are harder to press, and it takes longer for the vehicle to respond to the key’s command. 

Also, the battery contact may become worn out, loose, or corroded due to oxidation, vibration, and other factors. This will have the same effect as having a dead battery. 

How to fix Dodge Journey Key Not Detected

Once you realize the Dodge Journey “Key Not Detected” warning message, you need first to figure out what the cause of the problem is. You can do this by inspecting all the vehicle components that could be the source of the issue. 

Below are ways to fix a Dodge Journey “Key Not Detected.”

Replace the key fob battery 

When the battery of your Dodge Journey key fob is dead, you need to replace it immediately. To do this, follow the steps below. 

• Find the small notch at the side of the key fob and insert a screwdriver or any other tool that can fit in. 
• Slowly pry open the case and separate it into two. 
• Find buttons like batteries and take note of how they were placed. 
• Insert the new batteries the same way the old ones were placed. 
• Snap the separated key fob back together and test the key. 

Replace key fob 

In case of water damage or extreme wear conditions, you may need a new key fob compatible with your vehicle. You can get this in an authorized Dodge dealership. 

Charge or replace car battery 

If you are faced with a dead battery car battery, the easy fix is to charge the battery. Sometimes, the issue might not be a dead battery; it could be that the terminals are corroded. In this case, you may need to have them clean. Make a baking soda and water mixture, using the mixture and a rag to clean the battery. 

Fix module issue 

To fix the receiver module, you need first to locate it. The module is under that dashboard, just behind the glove box. Once located, check the connections, wiring antenna, and other components. 

Go ahead and replace damaged parts of the module if you can. A professional should do issues like software malfunction. 

Final Thought!

If you are faced with a “Key Not Detected”, it is important that you have the issue solved fast before the key fob becomes completely nonfunctional. Fortunately, problems with the key fob can easily be fixed, and you may not require professional help. Also, it will not cost much to have the issue fixed, even if you have to replace the key. 

I'm Edmond Davis, an automotive expert with years of experience in vehicle repair, performance, and safety. I graduated from the University of Michigan with a degree in Automotive Engineering and have worked with major companies like Ford, GM, and Chrysler. I'm a trusted source of information for anyone looking to learn more about cars or improve their driving experience.

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• Alarms, Keyless Entry, Key Fobs, Locks & Remote Start

Key Fobs detected but not locking or unlocking

By bvanhooser September 3, 2022 in Alarms, Keyless Entry, Key Fobs, Locks & Remote Start

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We have two journeys, one a 2012 and the other 2018. Two key fobs for each. Today all the key fobs stopped allowing us to lock, unlock, remote start, or panic. Both journeys still detect the key for passive entry and starting. I've replaced batteries, but that didn't fix it. Kind of at a loss as to why this happened. Any thoughts?

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are you sure you put the batteries in correctly? so you are saying both journeys fob wont work? have no idea on that one

Yes batteries are in correctly.

and it happened the same time for both of your journeys fobs not to work?

• 6 months later...

Hi bvanhooser, I have just ran into the same issue on my 2015 journey... The 2 Key fobs are decteted and still start vehicle and proximity unlock/lock at the door handle, but no buttons function!  Just out of the blue, worked fine untill I tried just now. Fobs were not dropped or damaged, literally worked hours ago. 

Batteries in both fobs putting out 3V, no issues with fobs previously. Checked all doors, closed and lock/unlock properly.  Starts normaly, car battery is plenty good. 

Did you ever solve this problem? Any help much appreciated! 

as most one time posters they never reported back on their solution to the problem, i would assume their problem would be different then yours. have you checked out youtube for any solutions?sounds like your journey is not rec the signals from your fobs,,,did you put in new batteries or just checked them for their strength i would replace them first before doing anything else. please report back on whatever you find to be the problem for others 

Problem never really was resolved. Key fobs still don't work at home sometimes, but they do occasionally work when out and about. No real rhyme or reason to when they work. My wife's key fob will actually work sometimes and mine won't, and we're both at the car. Wish I had an answer for you...

44 minutes ago, bvanhooser said: Problem never really was resolved. Key fobs still don't work at home sometimes, but they do occasionally work when out and about. No real rhyme or reason to when they work. My wife's key fob will actually work sometimes and mine won't, and we're both at the car. Wish I had an answer for you...

ALL 4 quit working for both? Well lets say ONE FOB works "sometimes. 

  I don't have so new a year as an 2018, but I do know that if you have a Check Engine Light on when in use, the computer will NOT allow remote start to function till the fault is fixed.

Is this the only fault with both cars? Does the FOB lock/unlock the doors of both cars?

Your messaging is rather vague, we need specific as to which car and what is not working.

8. Faulty receiver module

Dodge Journey has a remote keyless system receiver that receives radio frequency signals from the key fob. If none of your key fobs work, and and you can’t reprogram the keys, it is possible the receiver module has developed a fault.

You may have to perform further diagnostics to identify the faulty. The keyless entry antenna could be damaged, or the module is just not communicating with other modules on the vehicle. In these cases an OBDII scan tool can be used to verify if the commands are being transmitted and acted on by the security module...................................

Reset the system

If the key fob is not working due to a glitch in the keyless entry system, it may be possible to restore the functionality by resetting the keyless entry system in your Journey.

There isn’t any button or option to reset the keyless entry system in Journey, but you can reboot all the on-board computers by disconnecting the 12 volt battery for a few minutes. Remove the cable from the negative terminal of the battery first, then from the positive terminal. With the battery disconnected, press the horn button a few times and turn on the headlights to drain out all the residual electricity from the system. After about 15 minutes, reconnect the battery in reverse order: positive cable first, then negative cable.

Oops, my post notifications were going to spam... Thanks for the replies guys! I also found a few recommendations to try rebooting the computers but was not looking forward to digging out the damn battery.  I ended up just trying to clean all contacts in the fobs with rubbing alcohol and putting and it still didn't work.  Waited a few hours after I made the post and pushed the lock button from my kitchen and it worked! No idea what the glitch was but it's never happened again, everything has worked as it should since.

Sorry I can't provide a fix or any help to anyone else with this issue, I honestly didn't do anything  to fix it. 

2 hours ago, DJDiggler said: Oops, my post notifications were going to spam... Thanks for the replies guys! I also found a few recommendations to try rebooting the computers but was not looking forward to digging out the damn battery.  I ended up just trying to clean all contacts in the fobs with rubbing alcohol and putting and it still didn't work.  Waited a few hours after I made the post and pushed the lock button from my kitchen and it worked! No idea what the glitch was but it's never happened again, everything has worked as it should since.   Sorry I can't provide a fix or any help to anyone else with this issue, I honestly didn't do anything  to fix it. 

you dont have to disconnect at the battery just use the upper power jump spots located on the drivers side

• 1 month later...

On 3/22/2023 at 3:43 PM, bvanhooser said: Problem never really was resolved. Key fobs still don't work at home sometimes, but they do occasionally work when out and about. No real rhyme or reason to when they work. My wife's key fob will actually work sometimes and mine won't, and we're both at the car. Wish I had an answer for you...

This may sound strange but has been known to boost key fob signals by placing the key fob against your temple then push the button. 

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Dodge Journey: Start The Engine With Dead Key Fob

Key fobs are beneficial as they allow you to lock and unlock your Dodge Journey with the click of a button. However, if the battery goes dead, how do you start your vehicle? No worries, we got you covered. Follow these steps below to enter and start your Dodge Journey with a dead key fob.

2020 Models

2011 – 2019 models.

• Turn the fob over to reveal the latch located at the TOP BACK of the fob.
• Use the key to UNLOCK the vehicle door.
• Place the key fob on the START button, PUSH in, and press the BRAKE to start the vehicle.

*Although the battery in the fob is dead, the vehicle will, in fact, recognize the fob.

• The  fob battery is low or dead if the engine does not start when pushing the button.
• Place the  nose side of the Fob (opposite end from the emergency key) against the Start/Stop  button.
• Push the  Start/Stop button.

**NOTE : If you are unable to enter and start the vehicle with the dead key fob on the first try, REPEAT the steps. If you are still unsuccessful, contact the dealership for assistance or consult your vehicle user’s manual. 

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