Peugeot 208 Key Replacement
Peugeot 208 key replacement is best left to experienced auto locksmiths with the right equipment and know-how. They will be able to create and program new keys much quicker than a dealership and at a lower cost.
A dead battery for your coin is most likely to blame when your key fob stops locking or unlocking the doors. However, there are other reasons why the key might be malfunctioning.
Dead Coin Battery
A dead coin battery will stop your Peugeot 208 from locking or unlocking, and cannot start the engine. In peugeot 308 replacement key need make use of the alternative method for starting described in your vehicle owner's manual.
Another reason why your 208 might not be starting is because the spark plugs have been damaged. The spark plugs ignite the fuel to start the engine. However they have a finite time of life. If they aren't used enough, they will eventually fail.
Luckily, there is an easy solution for this issue. The best option is to determine the voltage of your car battery with a multimeter. If it's below 11.5 volts and you are not satisfied, then it is time to replace it. It is also necessary to clean the battery's contacts if it has corrosion. You can do this by lifting the rubber covers covering the two terminals on the battery and using a wire brush to remove any corroded parts of the battery. You should then reconnect your cables to connect the positive and negative poles.
Water Damage
If your 208 isn't starting and the battery isn't flat then you should check that the spark plugs are in good working order. It could be that they are overly dirty, causing them to not to spark. The spark plugs can be cleaned in the workshop.
Peugeot automobiles use keys that are transponder-type and is compatible with the car's immobiliser system. This ensures that only a valid key can turn the engine. If the chip inside the Peugeot key is damaged, then it won't send the proper signal to the vehicle.
Water damage is a frequent cause of this problem. This is particularly prevalent in colder climates. the vehicle could have been exposed to snow or rain. In this case, you need to contact a reliable locksmith who has the tools and equipment required to modify the key. They will also have the most up-to-date technological know-how and machinery required to create the Peugeot 208 smart key. The process shouldn't take more than 15 minutes.
Contacts to the battery are not working properly.
Peugeot replaced the transponder chips with a brand new type that uses electronic components that are mounted on a circuit board. The new system is fantastic when it's brand new, but the circuit boards begin to degrade with time and stop working properly.

This can prevent the immobiliser chip from triggering, so your car won't start. If this is the case, it's a good idea get in touch with a Peugeot specialist or locksmith.
Another issue that is common is when the battery of the key fob gets depleted, which causes the blade of the key to stop from entering the lock. A locksmith in your car will replace the battery and then cut a fresh blade for you. This is a simple solution.
Faulty Receiver Module
It could be that the receiver module is defective If your Peugeot key fob fails to function after being dropped on the floor, or exposed to a sudden storm or accidentally washed. The receiver module is responsible for transmitting radio signals to the onboard computer that controls the central locking system of your Peugeot vehicle.
Rubber seals on the key fob block water from reaching the electronic chip. However, prolonged exposure to water could penetrate these seals and damage the chip. The high salt content of the ocean water or pool could cause damage to the key fob if it is submerged.
The module needs to be replaced if your Peugeot spare key isn't working anymore. This can only be done by an expert auto locksmith or Peugeot specialist. Peugeot keys are, unlike other vehicles, are secured by an immobilizer device. This requires the right programming to allow the car to start. This is why you should only be able to trust a professional Peugeot locksmith to handle the task of creating and programming the replacement.
Faulty on-Board computer
The computer on board of your Peugeot is responsible many systems inside your car, including airbags and power windows. If something is wrong with these systems, it will typically display a code that identifies the issue. This code will be stored within the system until the problem is resolved. Most often, this involves replacing the on-board computer.
One of the most frequent causes of the light flashing is loose or corroded connectors in the airbag sensor. This can be caused by wear and tear, aging, or exposure to salt and moisture. It is imperative to have this issue addressed as soon as you can, since a malfunctioning airbag can be dangerous in the event an accident.
If your Peugeot is showing a card detected as not present error, then the key battery in the key fob may be dead or weak. This can prevent the key fob from sending a signal that disables the immobilizer on your vehicle's standard. Try this by pressing the unlock key on the key fob, and then trying to start your vehicle. If this does not work then the battery in the key fob has to be replaced.