How To Replace Battery In 2018 Hyundai Sonata Key Fob?

Your key fob has a tiny coin cell battery within. Before attempting to take apart the keyless entry remote, remove any internal keys.

Accurately use pry tools to attempt to disassemble your fob. CR2032 battery replacement using a flathead screwdriver.

It’s time to replace the battery inside the case of the keyless entry fob. Make sure to wire the battery in a circuit the proper way around. If your battery is connected incorrectly, your remote key fob won’t function.

Press buttons on the circuit board to make sure everything is working before assembling the keyless entry fob’s enclosure.

At this point, tightly squeeze the back cover of the fob. Line up the two parts of your shell and manually attach them from top to bottom. Look for gaps in your keyless entry remote case. Try to repeat the previous procedure if it is not tightly shut.

What kind of battery does a key fob for a Hyundai Sonata require?

A CR2032 battery powers the majority of Hyundai key fobs. Once you have a new Hyundai key fob replacement battery in your possession, insert it into your key fob exactly where the old one was. Check to see if the battery is in contact with each connection.

I can’t get my Hyundai key fob to open.

You must first depress the metal button or tab to release the actual key before you can open the key fob on a Hyundai. The fob will then pop open once you insert the key into the hole and move it around. Despite being somewhat high-tech, your key fob is robust.

How much does a new Hyundai key fob cost?

It’s more likely that you will be allowed to utilize an aftermarket key fob if your automobile is at least ten years old, according to CR’s Ibbotson. Many of these less sophisticated fobs can be configured by the consumer, a local technician, or an automotive locksmith.

Ibbotson advises making sure to phone your neighborhood garage first to confirm that they can do the task, as key-fob programming equipment levels can vary from shop to shop. For instance, a Maryland-based repair shop called Murray’s Auto Clinics informed CR that they are unable to program key fobs for any vehicle with push-button start or keyless entry.

We took our vehicle to M.J. Sullivan Hyundai in New London, Connecticut, where we were charged $120 for programming (one hour of labor), which is what they would have charged us if we had purchased the key fob from them.

Hyundai sent us a laser-cut mechanical backup key for $72.47, bringing the total cost to $272.42 (the car waited at the shop for two days); if we had ordered the key fob through the store, the total would have been $428.92).

For some makes and models, you can purchase a cheap aftermarket fob and program it yourself if your home unexpectedly gains a third driver, such as a teenager.

We purchased a fob from BestKeys from Amazon for CR’s 2008 Chrysler Town & Country minivan. Although it lacks the Chrysler branding on the back, it resembles the two original fobs that came with the minivan when it was new. The uncut mechanical key and internal circuitry were both included in the $14.30 price. (However, we didn’t see the need to shell out the cash to have a locksmith cut that third key.)

Chrysler customers can program a third key fob themselves if they already have two functional ones, just like GM owners can. The owner’s manual contains clear and straightforward programming instructions.

Why won’t my key fob operate now that the battery has been changed?

The most typical fix for a broken key fob is a battery replacement. However, replacing the batteries may not always be the best course of action. Therefore, your key fob might not operate even after a battery change for various reasons.

Handling the key fob circuit carefully is the first step in fixing the issue. Do not use your bare hands to contact the key fob circuit if you are not familiar with handling electronics. Call a professional right away to quickly diagnose and resolve the issue.

The following are additional causes for the key FOB’s malfunction:

Over time, a car remote’s button will inevitably wear out. When the button is depressed, the contacts notify the circuit board to carry out commands. The contacts may become separated from the buttons as they deteriorate. Pressing the buttons repeatedly is one of the greatest techniques to identify worn-out car buttons on car remotes.

Determine which of the following circumstances applies:

  • Only certain button presses, or all button presses, function.
  • One button operates while the other does not.

There is a problem with the automobile remote if the plastic that covers the key fob has also cracked. Open the key fob using basic tools, then inspect it for damaged contacts or crooked buttons. In the event that doesn’t work, get a new automobile key fob.

Your car remote might not function after changing the battery for another cause, which is the lock. Look for these indications to determine whether the lock or auto door has become faulty.

  • Manual or key operation of the lock does not cause it to unlock or lock.
  • Some door locks can be opened remotely, but not all.
  • Without the doors opening, a signal has been transmitted, as indicated by the indicator light flashing.
  • Door lock operates partially or not at all.

The automobile key may become damaged as a result of things like water, scratches, etc. The key fob may be damaged if it stops functioning right away after being trodden on, submerged in water, or opened. Other indicators to look out for include:

  • Whether a backup key functions
  • The buttons are stationary.
  • The Key is clearly damaged.

A damaged key can be replaced with a new car key. The key fob can be reprogrammed with assistance from the Colorado Springs Locksmith specialists.

There is a good likelihood that the battery change reset a car remote. When certain buttons are pressed, the key fob can also be reset. Therefore, the failure of many key fobs is a good indication that the automobile key remote has been reset. There are two indicators to watch out for:

  • No spare remotes operate.
  • car remote completely quits functioning

After changing the battery, does the key fob need to be reprogrammed?

After changing the battery, you typically do not need to reconfigure the key fob. However, you might need to reprogramme it by re-pairing it with your vehicle if you’ve replaced not only the batteries but also some of the internal cabling and electronics.

Where is the Hyundai Sonata’s smart key holder located?

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Fix 1: While tapping the brake, push the Start button using the rear or end of the dead key fob. Fix 2: Place the dead key fob, buttons facing up, in the Smart Key slot (located in the locations specified below), and depress the brake while pressing the Start button.

Slots for Smart Keys: There are three places where these slots can be found: 1. on the front of the center console; 2. behind a panel right below the infotainment control knob; or 3. on the left side of the glovebox when it is open.

How is the Hyundai Smart key pry opened?

The case ought to open easily. In order to start, look for a little notch or imprint down the side of your key fob if you drive an older Hyundai car. Then, spin the key fob in either way with a coin or flat-bladed screwdriver to gently pry it open from the notch.

Why does the Hyundai Sonata say that the key is not present?

There could be a number of causes for your Hyundai key fob not to be recognized by your vehicle. The issue could be anything as simple as a dead battery in your smart key. You’ll be able to tell if that was the problem after changing the battery.

What occurs if the key fob battery runs out?

My car’s key fob seems to be coming in and going out, though. I know I merely need to replace the battery, but I don’t have much free time. What if the key fob entirely fails while I’m operating the vehicle?

In less than two minutes, find out if your auto insurance is being overcharged.

This issue has been foreseen by automakers ever since the key fob was created. Nothing will happen if your key fob dies while you’re driving. Simply because the key fob is a locking and starting device only, the automobile will continue to run. The key fob has no influence over the ignition or engine once the automobile is moving.

If time is of the essence, you should be aware that changing the battery in your key fob just requires two minutes, albeit you will need to visit a general store or pharmacy to obtain the battery.

Why not change the battery in your car insurance at the same time as you replace the one in your key fob?

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What does the Hyundai key fob’s hold button do?

What does auto hold accomplish? It prevents your automobile from rolling away accidently when it is moving or stopped, thanks to the ABS/ESC hydraulic unit.

Hyundai vehicles can be operated without a key fob.

Once the engine is going, the automobile will still work without the key fob. Additionally, switching from park to drive is trouble-free even when the key is not available.

How long does a key fob’s battery last?

Keyless entry is a fantastic feature, but you can only benefit from it if you keep the technology up to date.

The little things in life can often mean the most, such as not having to search through your purse for your keys or using your key fob to raise and unlock the back doors so you can load groceries.

But what occurs if the fob breaks down? The key fobs for your car require maintenance just like the vehicle itself does.

When anything breaks down, Gary Freeman, owner of C & G Auto in Myrtle Beach, advised against replacing it right away.

“A replacement fob can be pricey; they can cost several hundred dollars, and once you have a replacement fob, they need to be programmed,” said Freeman.

He advises checking the battery as your first action. If you have to press the lock or unlock button on the remote numerous times before it locks or unlocks, it could be a sign that the battery is starting to lose power, according to Freeman.

According to his calculations, the keyless entry remote can be safely stored or hung up anywhere beyond the six to ten feet from which the automobile computer system can read the fob.

According to Freeman, the battery life for the majority of automotive key fobs is three to four years with regular use. Additionally, he claims that the battery life of your fob may be impacted by where you keep it. Freeman advises against hanging the fob near the car or leaving it in the car overnight.

“It (the key fob) does send a signal continuously, so it drains the battery in the key fob and its causing an excessive drainage on the battery of the automobile,” noted Freeman. “A computer is identifying that signal saying I’m ready to start.”

According to Freeman, if the key fob malfunctions, the automobile frequently won’t start because the computer system won’t acknowledge that the key fob is present in the vehicle.

“In most situations, the owners’ manual will clear that up for you, or practically any auto repair facility can replace that battery,” Freeman continued.