Peugeot 208 Key Replacement
It is better to leave the replacement of Peugeot keys 208 to auto locksmiths equipped with the right equipment and knowledge. They can design and program keys quicker and more efficiently than dealerships.
A dead battery for your coin is most likely to be at fault if your key fob stops locking or unlocking the doors. There are many other reasons for the key to be malfunctioning.
Dead Coin Battery
A dead coin battery will stop your Peugeot 208 from locking and unlocking, and also preventing it from starting the engine. If this is the scenario, you'll need apply the backup starting technique that is detailed in the owner's manual of your vehicle.
The spark plugs can also be worn out. Spark plugs are what ignite the fuel to start the engine. However they have a short lifespan. They'll eventually fail when they aren't used enough.
Fortunately, there's an easy solution for this issue. Check the voltage of your battery using a multimeter. If it's less than 11.5 Volts then you must replace it. It is also essential to clean the battery's contacts in case it is corroded. This can be done by removing the rubber cover from the two terminals of the battery, and then using a wirebrush to remove any corroded parts of the battery. It is then time to reconnect your cables to connect the positive and negative poles.

Water Damage
If your 208 will not start and the battery has not been replaced, you must check the spark plugs. It could be that they're dirty, which causes them not to spark. The spark plugs can be cleaned in an workshop.
Peugeot cars have a transponder key that works with the car's immobiliser system. This makes sure that only the correct key can start the engine. If the chip inside the Peugeot key is damaged, it won't transmit the correct signal to the vehicle.
This is a very common issue that is often caused by water damage. This is particularly common in colder climates where the vehicle may have been exposed to snow or rain. In this instance, you should contact an experienced locksmith who will have the necessary tools and equipment to reprogram the key. They also have the most up-to-date technology and equipment needed to make a Peugeot 208 smart key. The process shouldn't be more than 15 minutes.
Faulty battery contacts
Peugeot changed from the old carbon-encased transponder chips to an entirely new type of chip that relies on electronic components on a circuit board. This new system works great when it's brand new, however, over time, the circuit boards begin to degrade and stop working properly.
This could prevent the immobiliser chip from triggering the immobiliser chip, causing your car not to start. Contact an Peugeot specialist, or a locksmith, if this is the situation.
A common problem is when the battery inside the key fob begins to fail. This causes the blade of the key to stop feeding into your lock. A car locksmith will replace the battery and then cut a new key blade for you. This is a quick solution.
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 onboard computer, which controls the central locking system inside your Peugeot vehicle.
Rubber seals on the key fob stop water from reaching its electronic chip. However prolonged exposure to water could break through these seals, causing damage to the chip. Submerging the key fob into ocean water on the beach or throwing it into the water can be particularly damaging due to the high salt content.
The module will need to be replaced if the Peugeot spare key is no longer working. This can only by done by an Peugeot specialist or a professional auto locksmith. Like other automobiles, Peugeot keys are protected by an unique immobilizer system that requires the correct programming to begin the engine. It is for this reason that you should only rely on a Peugeot locksmith to create and program an alternative.
Computer on-board is not working properly
The computer on board in your Peugeot is responsible for a variety of the systems inside your car, ranging from power windows to the airbags. The on-board computer will show the code when something goes wrong. This code is stored in the system and will remain there until the problem is resolved. In peugeot 2008 key www.g28carkeys.co.uk , this will require replacing the on-board computer.
The most common cause of the warning light of the airbag to flash is corrosion or loose connections in the sensor. This could be due to wear and tear, aging, or exposure to salt and moisture. It is important to have this issue addressed as soon as you can, since a malfunctioning airbag can be risky in the event of an accident.
If you see an error message that says "card 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 deactivate the vehicle's immobilizer. You can test this by pressing the unlock button on the key fob and then attempting to start your car. If this doesn't work it is because the battery of the key must be replaced.