How to Repair Fiat 500 Keys
There are a few reasons why your Fiat 500 key FOB may not function properly. The small "watch" inside the key FOB is often dead. This is a 3.3-volt lithium CR2032 You can buy it for less than $3.
When you need the replacement key for an older Fiat model locksmith is the right person to contact. United Locksmith offers this service, and has all the tools and parts required.
Keys
On the outside, a Fiat key may appear simple but inside the casing is an electronic chip which communicates with the car's immobiliser system. If the chip is not present, or is not properly programmed to the immobiliser, your car won't be able start. Car Keys Solutions can offer you standard equipment and technology from dealers to repair your Fiat key, regardless of whether the key has been damaged or lost.
A spare key can keep your vehicle running in the event of an accident or lockout. We can provide you with a standard blank key or remote fob. We only use the highest quality blanks and offer a quick turnaround so you can get back on the road in no time.
Some people prefer to visit a Fiat Dealership to get an updated key. We can provide the service faster and more affordable. Additionally, you will save the towing costs of getting your car to and from the dealership as we can deliver the key to you. This can reduce the waiting time, which is usually up to 10 days.
Remotes
The remote controls of Fiat vehicles are like keys, however they feature an IR LED (infrared). This LED transmits an electronic signal to the device that can open or shut down the vehicle when it is pressed. The microprocessor inside a key converts the signal into a code which is then transmitted to the device.
This is also known as "keyless entry". The newer your vehicle is, the more likely to include a keyless entry system. The more advanced your car, the more features it will have. This includes everything from locking and unlocking your vehicle with a single press and opening the doors without having to reach the door handle and much more.
The key fob has an integrated circuit chip that connects to the vehicle's immobiliser system. The system can tell whether the correct key is present by observing a certain sequence of digits within the transponder chip. The vehicle won't start in the event of a chip being missing or isn't programmed to the correct immobiliser system.
A locksmith can repair the key fob in case it is damaged. The locksmith will also have to program the new key to link with the immobiliser system of the car. This is a crucial part of the process, and you should be prepared to provide details about your car to your locksmith if they contact you.
Keyless Entry
If you have keys-less entry on your Fiat 500, you can lock and unlock the vehicle at any time with the push of the button. This technology is becoming more prevalent in all cars of all ages and models, and it adds convenience and safety to the use of your vehicle.
If your remote keyless entry system stops working look to see whether the battery in the fob is dead. Replace the battery with one that has the same voltage, type, and size as the original if it's drained. You should also ensure that the contacts of the battery are free of corrosion or dust.
The rubber seals on the key fob protect the chip from water. However prolonged exposure to soapy water or salty water can cause the chip to fail. If your key fob has been exposed to water, take out the battery and allow it to dry completely before putting it back in. You can also clean the electronic chip by using isopropyl and electronic cleaner.

While some people may believe that keyless entry is less secure, this system is actually more secure than conventional systems due to the code used to unlock your vehicle is rolled back after each use. This means that even if hackers are able to intercept the signal, they won't be able to gain access to your car.
Transponders
Fiat utilizes a crypto-key transponder system which means that keys or transponders must be precoded in the Body Control Module before they are "programmed" in the BCM. This is why an unwritten key is not able to be programmed as the BCM must read and write the secret code to the transponder before locking it. This is referred to as cloning.
thekeylab.co.uk are brand new replacement outer cases that replace the SIP22 Transponder keys for Fiat 500. They have a chip inside that unlocks the doors and opens the car. They must be cut professionally by a locksmith in order to fit your ignition.