Peugeot 208 Key Replacement
It is best to delegate the replacement of Peugeot keys 208 to auto locksmiths who have the required equipment and knowledge. They can design and program keys more quickly and at a lower cost than dealerships.
If the key fob has stopped locking or unlocking your doors, it is likely due to a dead coin battery. However, there are other reasons that the key may be malfunctioning.
Dead Coin Battery
A dead coin battery will hinder your Peugeot 208 from locking or unlocking and will not start the engine. If this is the scenario, you'll need utilize the backup starting method which is explained in the owner's manual of your vehicle.
The spark plugs may also be worn out. Spark plugs are what ignite the fuel to start the engine. However, they have a limited lifespan. They'll eventually break down if they aren't used frequently enough.
Fortunately, there's an easy solution for this issue. The best way to solve this issue is to test the voltage of your car battery using a multimeter. If the voltage is less than 11,5 volts, it's time to replace it. It is also essential to clean the battery's contacts if it has corrosion. This can be done by removing the rubber covers from the two battery terminals and then using a wirebrush to remove any corroded battery parts. After that, you need to connect the positive pole cables to the negative.
Water Damage
If your 208 doesn't start and the battery is not running, then make sure whether the spark plugs are in good working order. It is possible that they are just overly dirty, causing them to not to spark. The spark plugs can be cleaned in an workshop.
Peugeot automobiles are equipped with a transponder compatible with the immobiliser. This makes sure that only the correct key can turn the engine. If the chip inside the Peugeot key is damaged, then it won't transmit the proper signal to the vehicle.

This is a very common issue that can be caused by water damage. This is particularly prevalent in colder climates where the vehicle might have been exposed to snow or rain. If this is the case, seek out a reputable auto locksmith who will have all of the equipment and tools needed to reprogram the new key. They also have the latest technology and the machinery needed to create a Peugeot 208 smart key. The process should take no more than 15 minutes.
Contacts of the battery may be damaged.
Peugeot changed from the old carbon-encased transponder chips and introduced a new type of chip that relies on electronic components within a circuit board. The new system is fantastic when it's new, however the circuit boards wear out over time and cease to function properly.
This could prevent the immobiliser from working, so your vehicle won't be able to start. If this is the case, it's a good idea to get in touch with a Peugeot specialist or locksmith.
Another issue that is common is when the key fob battery gets depleted, which causes the blade of the key to stop from entering the lock. peugeot 207 key will replace the battery and then cut a new blade for you. This is a quick fix.
Faulty Receiver Module
If your Peugeot key fob stopped working after dropping it on the ground, being exposed to a sudden rain or accidentally washing it or washing it, it could be due to a faulty receiver module. The receiver is responsible for transmitting radio frequency signals to the onboard computer, which controls the central locking system within your Peugeot vehicle.
Rubber seals on the key fob keep water from reaching the electronic chip. However, prolonged exposure to water may be able to penetrate these seals and cause damage to the chip. The high salt content of the pool or ocean water can cause damage to the key fob if it is submerged.
The module will need to be replaced if the Peugeot spare key isn't working anymore. 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 correct programming to begin the engine. This is the reason that you should only rely on the Peugeot locksmith to create and program a replacement.
Faulty On-Board Computer
The on-board computer in your Peugeot is responsible for many of the systems within the car, from power windows to airbags. When something goes wrong in these systems, it will usually display a code indicating the problem. This code will be stored within the system until the issue is resolved. Often, this will involve replacing the on-board computer.
One of the most common reasons for the light flashing is loose or corroded connection in the airbag sensor. It can be due to wear and tear, aging, or exposure to moisture and salt. This issue must be taken care of as soon as you can, as an airbag that is not functioning could be dangerous in case in the event of an accident.
If your Peugeot is showing a card not detected error then the key battery in the key fob could be dead or weak. This could prevent the key fob from sending a signal that disarms your vehicle's standard immobilizer. Try this by pressing the unlock key on the fob's key and then trying to start your vehicle. If this doesn't work it is likely that the battery needs to be replaced.