Peugeot 208 Key Replacement
Peugeot 208 key replacement is best left to experienced auto locksmiths who have the right tools and know-how. They will be able to create and program new keys much quicker than a dealership and at a lesser cost.
A dead battery for your coin is most likely to blame the reason your key-fob stops locking or unlocking the doors. There are other causes that the key might be malfunctioning.
Dead Coin Battery
A dead coin battery will stop your Peugeot 208 from locking and unlocking, and also hindering it from starting the engine. If this is the situation, you'll need use the backup starting method that is detailed in the owner's manual to your vehicle.
The spark plugs could also be worn out. The spark plugs are responsible for igniting the fuel that starts the engine. However they are limited in their lifespan. If they are not used enough to last, they'll eventually fail.
Fortunately, there's an easy solution to this issue. Verify the voltage of your battery with a multimeter. If the voltage falls below 11,5 volts, then it's time to replace it. It is also essential to clean the battery's contacts in case it is corroded. You can do this by lifting the rubber covers that protect the two battery terminals and using a wire brush to remove any parts that are corroded from the battery. You should then reconnect the cables to the positive and negative poles.
Water Damage
If your 208 isn't starting and the battery is not empty, you must ensure that the spark plugs are working. You might find that they are dirty and do not spark. The spark plugs can be cleaned in an workshop.
Peugeot automobiles use a transponder style key that integrates with the car's immobiliser system. This makes sure that only the correct key is able to turn the engine. If the chip inside the Peugeot key is damaged, it won't transmit the proper signal to the vehicle.
Water damage is a frequent cause of this problem. peugeot 208 key replacement G28CarKeys is a frequent issue in colder climates where the vehicle is exposed to snow or rain. If this is the case, you should get in touch with a reputable locksmith who has all the tools and equipment required to modify the new key. They'll also have the latest technology and equipment needed to make the Peugeot smart key. The process shouldn't last more than 15 minutes.
Faulty battery contacts
Peugeot changed from the old carbon-encased transponder chips to an entirely new type of chip that uses electronic components in a circuit board. The new system is excellent when it's new, however the circuit boards wear out over time and stop working properly.
This can prevent the immobiliser from triggering so that your vehicle won't be able to start. If this is the case it's a good idea to call a Peugeot specialist or locksmith.
Another common issue is when the battery of the key fob begins to fail, which causes the blade of the key to stop getting into the lock. A locksmith from your vehicle can replace the battery and cut a fresh blade for you, it's normally a quick fix.
Faulty Receiver Module
It could be that the receiver module is faulty if your Peugeot key fob isn't working after being dropped on the floor, exposed to a sudden downpour or accidentally washed. The receiver module is responsible for transmitting radio frequencies to the onboard computer which regulates the central locking system of your Peugeot vehicle.
Rubber seals on the key fob block water from reaching its electronic chip. Water can damage the chip when exposed to water for long periods of period of. Submerging the key fob in the ocean at the beach or throwing it into the water can be especially damaging because of the high salt content.
The module will have to be replaced if the Peugeot spare key no longer works. This can only be done by an expert auto locksmith or Peugeot specialist. Like other automobiles, Peugeot keys are protected by an unique immobilizer system that requires the right coding to begin the engine. This is why you should trust an experienced Peugeot locksmith with the task of creating and programming an appropriate replacement.
Computers with faulty on-board computers
The on-board computer of your Peugeot is responsible for a variety of features in your car, including airbags and power windows. The on-board computer will display an error code when something goes wrong. This code is stored inside the system and will stay there until the problem is resolved. This will often require the on-board computers to be replaced.

The most common reason for the airbag warning light to flash is corrosion or loose connections in the sensor. This can be caused by wear and tear, aging or exposure to salt and moisture. This issue must be taken care of as soon as you can, as an airbag that is not functioning could be dangerous in the event of an accident.
If you find a card not found error on your Peugeot key fob, the battery in the key fob may be dead or weak. This will stop the key fob sending a signal to deactivate the vehicle's immobilizer. You can test this by pressing the unlock button on the key fob, then trying to start your vehicle. If this does not work it is likely that the battery is in need of replacement.