Peugeot 208 Key Replacement
It is recommended to leave the replacement of Peugeot keys for 208 to auto locksmiths with the required equipment and skills. They can make and program new keys much faster than a dealership would and at a lower cost.
A dead battery for your coin is the most likely cause when your key fob stops locking or unlocking doors. There are many other reasons for the key to be malfunctioning.
Dead Coin Battery
A dead battery can stop your Peugeot 208 from locking and unlocking, as well as hindering it from starting the engine. If this is the situation, you'll need apply the backup starting technique which is explained in the owner's manual of your vehicle.

The spark plugs can also be worn out. The spark plugs ignite fuel to start the engine. They have a limited life span. If they are not used enough to last, they'll eventually fail.
There is a simple solution for this problem. Check the voltage of the battery using a multimeter. If the voltage is below 11,5 volts, it's the time to replace it. If the battery is corroded it is essential to clean its contacts. This can be accomplished by removing the rubber cover from the two terminals of the battery, and then using a wirebrush to clean any damaged parts of the battery. You should then reconnect your cables to connect the positive and negative poles.
Water Damage
If your 208 won't start and the battery has not failed, you should look at the spark plugs. It is possible that they're overly filthy, making them unable to spark. This is easily fixed by cleaning the spark plugs in the workshop.
Peugeot automobiles are equipped with a transponder that is compatible with the immobiliser. This ensures that only the correct key is able to start the engine. If the chip inside the Peugeot key is damaged then it won't send the correct signal to the vehicle.
Web Site is a very common issue that is often caused by water damage. This is a typical issue in warmer climates where the vehicle is exposed to snow or rain. If this is the case, you should call a reputable auto locksmith who will have all of the equipment and tools needed to modify the new key. They will also have the latest technological know-how and the equipment required to make a Peugeot 208 smart key. The process should not take more than 15 minutes.
Contacts of the battery may be damaged.
Peugeot changed from the old carbon-encased transponder chips to a new kind of chip that utilizes electronic components in a circuit board. The new system is great when it's brand new, but the circuit boards wear out over time and cease to function properly.
This could prevent the immobiliser chip activating which means that your car won't start. Contact an Peugeot specialist, or a locksmith, if this is the case.
Another issue that is common is when the battery in the key fob gets depleted, which causes the blade of the key to stop from entering the lock. A locksmith in your car can replace the battery and cut a new blade for you, it's generally a quick fix.
Faulty Receiver Module
If your Peugeot key fob isn't working after dropping it on the floor, or being exposed to a sudden rain or accidentally washing it or washing it, it could be due to a malfunctioning receiver module. The receiver is responsible for sending radio frequency signals to the on-board computer that controls the central locking system in your Peugeot vehicle.
Rubber seals on the key fob prevent water from getting to the electronic chip. However prolonged exposure to water can break through these seals, causing damage to the chip. The high salt content of the pool or ocean waters could cause damage to the key fob when it is submerged.
The module needs to be replaced if the Peugeot spare key does not work anymore. This can only be done by a Peugeot specialist or expert auto locksmith. As opposed to other cars, Peugeot keys are protected by an exclusive immobilizer system that requires the correct code to start the engine. This is why you must be able to trust a professional Peugeot locksmith with the task of programming and creating an alternative.
Faulty On-Board Computer
The on-board computer in your Peugeot is responsible for a variety of features in your car, including airbags and power windows. The on-board computer will show a code if something goes wrong. The code is stored in the system until the issue is resolved. This can often mean that the on-board computers to be replaced.
One of the most common causes of the light coming on is loose or corroded connections within the airbag sensor. This can be caused by wear and tear, aging or exposure to salt and moisture. It is crucial to get this issue addressed as quickly as possible, as a malfunctioning airbag can be dangerous in the event an accident.
If your Peugeot is showing a card detected as not present error, the battery in the key fob might be weak or dead. This prevents the key fob from sending a signal that disarms the immobilizer on your vehicle's standard. Test this by pressing the unlock key on the fob's key and then trying to start your vehicle. If this does not work the battery on the key has to be replaced.