Peugeot 208 Key Replacement
Peugeot 208 key replacement should be left to professional auto locksmiths who have the appropriate equipment and technical knowledge. They can design and program keys more quickly and at a lower cost than dealers.
A dead coin battery is most likely to be the cause if your key fob stops locking or unlocking the doors. However, there are many other reasons that the key may be malfunctioning.
Dead Coin Battery
A dead coin battery can hinder your Peugeot 208 from locking or unlocking, and will not start the engine. In this situation you'll need use the alternative starting method found in your vehicle's owner's manual.
The spark plugs might also be worn out. The spark plugs are responsible for sparking the fuel that starts the engine. However they are limited in their lifespan. If they aren't used enough they will eventually fail.
There is a simple solution for this problem. The best solution is to check the voltage of your car battery with a multimeter. If it's lower than 11.5 Volts, then you need to replace it. If the battery is corroded, it is important to clean its contacts. This can be accomplished by removing the rubber covers off the two battery terminals, and then using a wirebrush, you can remove any damaged parts of the battery. Then, you should connect the cables for the positive and negative poles.
Water Damage
If your 208 isn't starting and the battery is not running, then make sure that the spark plugs are working. G28CarKeys might find that they are dirty and don't spark. The spark plugs can be cleaned in a workshop.
Peugeot cars have a transponder key that is compatible with the car's immobiliser system. This guarantees that only the right key is able to start the engine. If the chip in the Peugeot key is damaged then it won't send the proper signal to the vehicle.
This is a typical issue that is often caused by water damage. This is a common problem in warmer climates where the vehicle has been exposed to rain or snow. If this is the case, you should get in touch with a reputable locksmith who will have all of the equipment and tools needed to reprogram the new key. They will also have the most up-to-date technological know-how and the equipment required to create a Peugeot 208 smart key. The process shouldn't take more than 15 minutes.
Contacts with the battery may be damaged.
Peugeot replaced the transponder chips using a new type that uses electronic components that are mounted on a circuit board. The new system is great when it's new, however the circuit boards wear out over time and cease to function properly.
This could prevent the immobiliser from triggering so that the vehicle won't start. Contact a Peugeot specialist or a locksmith if this is the situation.
Another common issue is when the battery for the key fob starts to die, this causes the key blade to stop from entering the lock. A car locksmith will replace the battery and then cut a fresh blade for you. This is a quick fix.
Faulty Receiver Module
It could be that the receiver module is faulty if your Peugeot key fob fails to function after being dropped on the floor, or exposed to a stormy rainstorm, or accidentally washed. The receiver is responsible for transmitting radio frequency signals to the on-board computer, which is responsible for controlling the centralized locking system of your Peugeot vehicle.

Rubber seals on the key fob stop water from reaching the electronic chip. However prolonged exposure to water can break through these seals, causing damage to the chip. The high salt content in the pool or ocean water can cause damage to the key fob, especially if it is submerged.
If your Peugeot spare key fob doesn't work it is necessary to have the module replaced. This should be done by an Peugeot specialist or an expert auto locksmith. Peugeot keys unlike other automobiles, are protected by an immobilizer system. This requires the correct code to begin the car. This is the reason that you should only rely on a Peugeot locksmith to design and program the replacement.
Faulty on-Board computer
The on-board computer of your Peugeot is responsible many systems inside your car, including power windows and airbags. The on-board computer will show a code when something goes wrong. This code will be stored within the system until the issue is resolved. In most cases, this will require replacing the on-board computer.
One of the most common reasons for the light coming on is loose or corroded connectors in the airbag sensor. It can be due to wear and tear, aging or exposure to moisture and salt. It is essential to have this issue addressed as quickly as possible, as an airbag that is malfunctioning can be dangerous in the event an accident.
If you see an error message stating that the card is not found on your Peugeot, the key battery in the key fob may be weak or dead. This will stop the key fob from sending a signal to disable the immobilizer on your vehicle. Test this by pressing the unlock button on the fob's key and then trying to start your car. If this does not work then the battery in the key needs to be replaced.