Toyota Aygo Key Replacement
Replacing a lost or damaged key fob is fairly simple. Utilizing a tool, you can remove the case and replace the battery.

You can purchase replacement batteries at most Lakeland stores. Take a photo or note the location of the old battery in the case.
Keys Lost or Damaged
The majority of modern cars have some kind of keyless entry system. It could be a simple button on the dashboard or a more elaborate fob that lets you unlock and start your car from a distance. Keys for these vehicles aren't the same as regular house keys for office use, and they can be more expensive to replace if lost or damaged. Many auto insurance companies provide key coverage as part of their insurance.
It is a long process to replace lost keys, because the new one needs to be programmed for your car. It can be a lengthy process since the coding needs to be precise so that the key can only talk to your car and not any other. This is the reason why, it is advisable to ensure you keep a spare key somewhere secure, not just in the car.
If you lose your key fob or it is damaged in any way, then the best option is to call Toyota Roadside Assistance or your breakdown service provider and see if they can help. They may be able to cut a replacement key for you. They can assist with any reprogramming needed for the car.
A brand dealership can also be a viable option, but be aware that this is likely to be a lengthy and costly process. They will have to order a key from the manufacturer, and then they'll need to program it. This can be a lengthy process.
If you want to replace the Toyota key fob battery, you need to know that the case has to be opened, and it's easy to harm the circuit board inside. Therefore, it is recommended to have some kind of note or photograph to open the case properly. Once the case is opened, carefully insert a new battery into the slot.
Keyless Entry System
The programmable key fob in your Toyota isn't only for convenience, it's also an important safety feature. If you have comprehensive car insurance, your programmable smart key is protected in the event of an accident, or theft. However, if you only have basic auto insurance, you'll have to pay out of pocket for a replacement.
Depending on the Toyota model, you may have a passive keyless entry system that locks or opens the doors when the key fob is within the vehicle's range. This can be a great way to keep your car safe when it's located in an unfriendly area however it comes with its limitations.
Passive keyless entry systems usually make use of radio frequency (RFID) or Bluetooth to send signals that trigger the door lock and start the ignition when the owner is in close proximity to the vehicle. They aren't as susceptible to hacking as traditional remote control systems, but there's the possibility that someone will deliberately duplicate the transmitter's signal to send it back at a later date. This is referred to as replay attacks, and it can be stopped by using the latest technology in the keyless system in your car.
You can also make use of an active keyless entry system in conjunction with your home security system or smart device to open your door remotely. Some systems allow you to give visitors PIN codes or remote access from your mobile phone prior to when they arrive. This is a great option for offices, apartment buildings and other commercial properties that want to offer seamless guest experiences.
Keyless entry systems can be expensive to install, but they're not as costly to replace or repair like traditional keys made of metal and locks. They are also less likely to be lost or stolen.
You will need to buy a keyless entry for your Toyota and then have it professionally installed by someone who is familiar with the manufacturer of your vehicle. Read the instructions and wiring diagram before you purchase any parts. Remove the panels from under the steering wheel in order to reach the wires.
Key Fob Battery Replacement
If your Toyota key fob doesn't work, it's usually because of the battery being dead. It's simple to replace the key fob and get your vehicle back on the road.
Remove your key from the ignition. If you're not sure what to do, consult your owner's guide or contact a local dealer. They'll be able to provide instructions on how to turn off the car using the key fob, as well as how to remove the keys from the ignition and use them to open your vehicle's doors.
Find toyota car key replacement G28 or slot on the outside of the Toyota key fob. This is the button you press to lock or unlock the vehicle. You should hear a clicking sound when you release the button. The lock or unlock indicator will flash. If it doesn't, check the inside of the case for an empty battery cover. If there isn't one you'll have to open the case with a small screwdriver or other flat tool.
After you have opened the case and inspected it, you ought to see a battery inside the case, which you'll have to take off by turning the tool to the left or right. Once the case has been opened and you are able to gently lift the circuit board to reveal the battery. Take a picture or note the type of battery and the location it is inside the case. After you've found a replacement battery, insert it into the case and seal it up.
Test the key fob again to ensure it is working properly. If it's not working then open the case once more and adjust the battery connections to ensure that they're clean and making contact. If you're still experiencing problems, you can contact your local Galaxy Toyota dealer and ask for them to reprogram your keyfob for you. You can also try a new battery. This is possible when you have an extra battery. Otherwise, it's likely that you'll need to replace the key fob in total.
Reprogramming
Modern car keys have much more than the physical part of the key that turns in the ignition. It also includes an electronic receiver, transmitter and a coding system to communicate with your car. Reprogramming can be costly because the code must be in line with strict standards. It may also take time, as special equipment is required. Dealers in cars may be able to help with this procedure, but they usually need to order parts and face the same types of delays. A locksmith is the best option in this instance.