What does the Replace Battery in Remote Key message mean?

What does the Replace Battery in Remote Key message mean?
Experienced mechanics share their insights in answering this question :
The Replace Battery in Remote Key message appears on your driver information center (DIC) when the batter in the remote keyless entry (RKE) transmitter needs to be replaced. When a new battery is added to the RKE, the DIC alert will disappear.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

If your key fob isn`t working after replacing the batteries, you may need to reprogram it or check for loose buttons and broken battery terminals. If your remote key fob isn`t working and you`ve already replaced the battery, you may need to reprogram the key.
A dead battery in your key fob means it can`t broadcast the signal the ignition system is looking for. If your car or truck can`t detect the correct signal, then the ignition will remain locked, and you won`t be able to start your car with the fob in your pocket.
Typically, a car fob battery should last between three and four years. Additionally, there are a number of signs that will tell you when your fob battery is dying. The first sign is reduced signal strength.
The Replace Battery in Remote Key message appears on your driver information center (DIC) when the batter in the remote keyless entry (RKE) transmitter needs to be replaced.
If your key fob dies while driving, nothing will happen. The car will continue to operate simply because the key fob is an unlocking and starting device only.
Can you drive with a dead key fob? No auto manufacturer is going to pin everything on the key fob working all the time. Therefore, even if your battery dies, you can still use the fob to drive the car. Despite most cars going keyless, several of them still have a key slot – usually located on the steering column.
– For a regular key fob the life expectancy of the battery lasts 4-6 Years. – The life expectancy of a Smart key fob battery is around 2-3 Years.
Generally, these batteries cost $10 or less, though some fobs require two batteries.
A CR2032 battery in a car key fob may last up to 4-5 years before needing replacement as the use of the battery is very intermittent.
If your key fob still isn`t functioning after you`ve replaced the batteries, the problem may be with the internal contacts, such as the buttons or the battery connector terminals. It`s also possible that your car and remote unpaired from each other after you took the batteries out.
If the car`s battery is dead, you will often notice that the key won`t turn. This isn`t unusual in higher end vehicles, which frequently use more complex electronic ignition systems. Check the life of your battery to verify this.
LEAVING YOUR KEY CLOSE TO YOUR CAR

Leaving your car key in your car overnight or even on a hook near the car is not recommended. If the fob is too close to your car, it can continue to communicate with it, which could drain the battery.

Car batteries are usually treated as fit-and-forget items, only getting any attention when they go flat or malfunction in some other way. But, contrary to what some motorists may think, a car battery doesn`t charge itself – it relies on a healthy electrical system to support the quest for a consistent performance.
Most key fob batteries will last between three and four years, although some Smart Keys need to be replaced as often as once a year. If you find that your fob doesn`t have the range that it once did, it`s probably due to a low battery.
How far can a keyless car drive without the key? Generally speaking, there`s no limit to the distance a vehicle with keyless entry and start can go without the keyfob being in the car. The vehicle will often just beep without the key present.
A bad battery in the key fob is most commonly the reason for a failure to send signals to the keyless entry system. If it is available, use the spare key fob to open the vehicle and start the ignition. If the spare fob is not available, use the provided key embedded in the fob to unlock the door.
The message can reset by itself, but the car needs to sit undisturbed for at least eight hours. Perhaps with your work/driving schedule the car doesn`t sit long enough. Q: I have a headlight that is dim.
In general, you will need to drive between 50-100 miles after you clear your car`s computer. Hopefully, this will get rid of the check engine light once and for all.
With a faulty battery, there`s bound be low voltage at the car`s computer which may cause the check engine light to come on.
LEAVING YOUR KEY CLOSE TO YOUR CAR

If the fob is too close to your car, it can continue to communicate with it, which could drain the battery.

Also known as a hardware token, a key fob provides on-device, one-factor authentication to facilitate access to a system or device, such as a car, computer system, restricted area or room, mobile device, network service or other kind of keyless entry system.
The CR2032 button battery has a better storage reserve capacity (235 mAh) than the CR2025 (170 mAh). Your CR2025 will last you a shorter duration than the CR2032. The CR2025 will last for about 2-3 months under heavy load. In comparison, the CR2032 has a battery life of 3-4 months.
In comparison to the CR2032, the DL2032 battery has a substantially higher capacity. A CR2032 battery has a capacity of 220 mAh, whereas a DL2032 has a capacity of 240 mAh. This prolongs the life of the Duracell battery and reduces the frequency with which it must be replaced.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

What does the Replace Battery in Remote Key message mean?
ANSWER : The Replace Battery in Remote Key message appears on your driver information center (DIC) when the batter in the remote keyless entry (RKE) transmitter needs to be replaced. When a new battery is added to the RKE, the DIC alert will disappear.

how can i get replacement keys for the mechanical key blades attched to the 2 remote control keys of my ford explorer 2014 model
ANSWER : Unfortunately, the only way to get a replacement Intelligent Access key for your vehicle is from the Ford dealer. The keys will need to be programmed with an OEM capable scan tool as well, before the vehicle will recognize them.

If I replace the ignition switch, can I use my existing BMW Keys with remote and valet key?
ANSWER : Yes, you can. The ignition switch is separate from the EWS system, so replacing the switch will still allow you to use the current keys you already have. Only if you have to replace a faulty key or EWS module will you have to possibly order all new keys.

One other possibility is there is an EWS issue where the key is not being properly identified not allowing the starting sequence. This would mean ordering an EWS module or keys from the dealer. Try out all keys you have to see if any will commence in the starting sequence. If none of the keys will start the vehicle, faults should be checked to ensure there are no EWS key identification faults. If no faults are present, then most likely the ignition switch is faulty. If there are key identification faults, then it’s either a key, module, or receiver that is the issue. You may want to consult with a mechanic who has the equipment to read out the Powertrain and EWS fault memories before replacing parts.

Keep getting Battery saver mode on my message screen and i replaced the battery like the dealer said.. message came back on?
ANSWER : Hello. A battery saver mode light can sometimes be set off by an issue with the battery, but it is also often set off if a problem occurs with the alternator, such as low or excessive output from a failed voltage regulator.

I would check the alternator to make sure that it is in proper functioning order, as an alternator issue can not only cause problems with the vehicle, it could also cause damage to the battery.

If you’d like to get this repaired, feel free to contact a certified mechanic who can diagnose the cause of the battery light firsthand and replace the alternator if necessary.

I have a 2015 chrysler 200. There is a message that states Key Fob not detected. I have changed out the batteries in the key fob.
ANSWER : Hi There,
This is a known problem in many Chrysler vehicles and is usually related to having the wireless fobs re-flashed or in some cases, a new ECM is installed. I would suggest having the car towed to your nearest Chrysler dealer as this is likely something only they will be able to fix.

2011 Nissan will not crank and the battery goes dead after one year.
ANSWER : Hi there. The battery is the remote key fob will only last about 8 years. Since it is now 2017, the battery is now 8 years old and could have lost its charge. The chip in the key tells the computer (ECM) to start the car. If the vehicle continues to eat away the battery in the key fob, then either a button is stuck on the key fob or there is a parasitic load (something that is on that is to be off) in the car causing the key fob to drain the power as the engine is running. If you need further assistance with your car not starting, then seek out a professional, such as one from Your Mechanic, to help you.

in my car battery warning light appearing while driving.so I have replaced both battery and alternater still light is on
ANSWER : As you may yourself have seen, there are many reports of this fault with the Civic, that is a battery or alternator is replaced only to have the warning light fail to extinguish despite checking every conceivable electrical possibility. Your only recourse is to have a certified mechanic go through that exercise with your car and that involves first attempting to "re-set" the light. If the warning light returns, the alternator output has to be carefully measured both loaded and unloaded. All terminal connections have to be verified including all grounds. Fuses have to be checked for integrity (continuity) and the possibility of shorts, in for example dash wiring, has to be checked. To request this repair, simply request an electrical components diagnostic and the responding certified mechanic will seek a resolution to this.

My key fob will not open my car doors or trunk. I inserted a new battery in the fob and that did not help. What cld be the proble
ANSWER : Based on your description, I believe that the first issue is the lack of programming for your new key fob. If the dealership told you that the key requires programming and that was not done, this is the reason that the new key fob is not responsive. Next, it is possible that the key hole in your door is electronic. This means that there is a sensor on your door lock that will allow you to lock or unlock all of the doors by turning the key inside the driver front door lock. If this is the case, the fact that that part has been damaged could have caused this issue. This may not have happened immediately after the key hole was damaged, but over time the issue may have gotten worse causing the key fob problem. I would recommend having your key fob programmed by the dealership to see if that will resolve the issue because that will have to be done anyway. If this does not fix the problem, I would then recommend having the key hole replaced by a qualified professional.