Repair Car Key: 10 Things I'd Like To Have Learned Sooner

· 6 min read
Repair Car Key: 10 Things I'd Like To Have Learned Sooner

How to Repair a Car Key Fob

Your key fob is likely to be tossed around frequently. This can cause its buttons to become stuck or damaged. You can try giving it a thorough check and replacing the battery, if necessary.

Most cars use the coin-style battery, which you can buy at pharmacies or big box stores as well as home improvement stores. However certain models require specialized programming equipment that only dealers have.

Dead Battery

The car key fob makes it easier to start your car and even get it into. But what happens if you press the button a few times and your car doesn't respond? This is usually caused by a dead or dying battery. Luckily, the battery is simple to replace. You can find replacements in auto parts stores and supermarkets and also at some home improvement stores.

However certain other features that the key fob provides may not function. This could be due to an issue with the mechanical system or an electrical issue, or even a programming error in your car's receiver. In these cases, it's probably best to consult a professional.

The majority of manufacturers include a mechanical slot in the fob for use in case of dead cells. In most instances, a cover is attached to the handle of the fob to conceal the key slot. The physical key can be inserted into the slot, which will allow you to unlock your door and start your vehicle. Make sure to insert the key fob when you have started the vehicle!

If you own a Ford equipped with SYNC Connect, you are able to start the car by using the key fob.  car key immobiliser repair  on most Fords with SYNC Connect has a backup "E blade". This mechanical key can be used to press the starter button in the event that your key fob isn't able to start the vehicle. For the best use of this feature, ensure that the battery is charged. You can also consult your owner's guide to learn how to do it.

If you're having problems with your car after replacing the battery on your key fob It could be the right time to call an expert locksmith or your dealer to have the battery replaced or repair the fob. In certain cases it is possible to get a new battery that can be used to program the key fob in your car at the dealership, or you can choose Interstate All Battery Center stores. However, this is only possible when the circuit board and antennas have not been damaged.

Damaged Buttons

Through the course of its existence the car key fob's buttons are likely to see a lot of wear and tear. They are susceptible to being dropped and are frequently in pockets and purses. The jolting could cause internal components to loosen or become damaged, leading to them not responding when you press them. Simple steps can usually fix this problem, but sometimes you may require taking your fob to an expert locksmith.

In addition to a dead battery, the most common reason why a key fob for a car can't function is because it needs new batteries. These little coin-shaped batteries are quite affordable and are easy to find them in large-box stores or hardware stores. You can also find videos explaining how to replace the battery in your key fob on YouTube or in the owner's manual.

It's important to remember that some keyfobs require specific steps to enter the appropriate programming mode to replace the batteries. In these cases, you'll need to consult the owner's manual or a reputable auto locksmith to ensure that you're following the proper procedure.

If you leave your key fob in extreme hot or cold temperatures can also cause it to stop functioning in particular when the battery has failed. In this case, you'll need to consult an automotive locksmith or dealer to obtain a replacement fob.

If you're still unable to push the buttons on your key fob, it could be due to the contacts being worn out. These contacts are rubber-like and coated with an electricity-conducting film, but they can start to wear out over time due to repeated use. You can attempt to repair this by disassembling the key fob and putting a piece of metallic tape over the worn out contacts.

It is important to be aware that certain key fobs are extremely difficult to open. They can only be opened with specialized equipment that can be purchased from a dealer. If you try to open yours with an instrument like a screwdriver or other, it's possible you could break the circuit board inside, and incur an expense for repairs that is higher than you might have otherwise needed.

Circuit Board Issues


If your key fob remains in a position to unlock the doors of your car and start your engine but it's not as far away as it used to it could be a problem with the circuit board. The circuit board is an electronic chip in the case that transmits signals to your car telling it whether or not to shut your doors, open the trunk, and even turn off your ignition. If the circuit board is damaged, your keyfob will not be able to send these signals.

You can repair damaged circuit boards on your own with a little technical knowledge. Begin by removing the battery and taking the holder and rubber button assembly from the circuit board. Make use of a cotton swab or some rubbing alcohol to scrub around the contacts and the plastic frame. This should remove any corrosion that has stopped the circuit board from transmitting signals.

Then, once you've reassembled the key fob, be sure it's in programming mode. Usually, this requires turning it on and off repeatedly, so make sure to check your owner's manual for specific instructions. The majority of car manufacturers have videos online that will show how to accomplish this. If you're not sure to do this and you are not sure how, you can bring your key fob to the locksmith that specializes in the vehicle model you have.

Some of the more modern key fobs have a receiver built in which allows you to access your trunk, lock your doors, and turn on your ignition from some distance. These are generally more reliable and operate over a wider range. If your key fob does not work as far as it did in the past, it may have an internal problem that's not working properly or an antenna that isn't functioning properly.

If you're having trouble getting your key fob to work, the most likely culprit is the battery is dead. It's cheap and easy to replace. If the fob's buttons or circuit board has been damaged, you'll need get it repaired professionally and reprogrammed. This service is offered by many dealerships, however you can find a shop that specializes in your particular brand.

Forgotten Key

It's a nightmare when you lose the car key fob. It's possible to turn your house upside down retracing your steps and searching all over, including in bags, drawers, under couches, and even under your cat's bed. You'll eventually find it. Preventative measures are the best way to ensure that you don't lose your key fob. If you have even a touch of minor ADD or are just not paying attention, make several copies and hand them out to your close family and friends members, so that when you lose yours you don't spend four hours sweating and cursing yourself for the rest of your life.

Many cars come with key fobs which allow you to lock and unlock doors, and in certain instances, activate the alarm system or open the trunk. However, some of the more sophisticated models have more advanced features, like the ability to summon your car with the press of a button. This feature is not available on all models, but if your car is one of those that can do it - the Genesis GV60 or Hyundai Sonata for example You're fortunate.

The good thing is that if you have a spare key fob that's programmed to your car, then you can use it to start your car in the event you lose your original. You can also reach out to an automotive locksmith and request them create an entirely new key fob that has specifically programmed for your vehicle. Talk to your dealer to see whether a replacement keyfob might be available for sale at a lower cost.

If you don't have an extra key and you don't have a spare, the only way to start your car is to call an auto locksmith who will replace the key fob you have or make a new one. Dealers are also able to do this but they'll require your car to be towed and proof of ownership. These services are relatively inexpensive in comparison to the cost of replacing a key at the dealer.