Peugeot 208 Key Replacement
Peugeot 208 key replacement should be left to auto locksmiths with experience who have the proper equipment and know-how. They will be able to create and program new keys faster than a dealership would and at a lower price.
If your key fob has stopped locking or unlocking your doors it is likely due to a dead battery in the coin. But, there are other possibilities that the key is malfunctioning.
Dead Coin Battery
A dead battery in the coin compartment will hinder your Peugeot 208 from locking or unlocking, and will not start the engine. If this is the case, you'll have to make use of the backup starting procedure that's described in your vehicle's owner manual.
The spark plugs might also be worn out. Spark plugs are what ignite the fuel to start the engine. They have a limited lifespan. They will eventually break down when they aren't used enough.
There is a simple solution for this problem. Check the voltage of the battery with a multimeter. If it's below 11.5 volts then you must replace it. If the battery has corroded it is crucial to clean its contacts. This can be accomplished by taking off the rubber covers from the two battery terminals, and then using a wirebrush to remove any corroded parts of the battery. Then, reconnect your cables to connect the positive and negative poles.
Water Damage
If your 208 won't turn on and the battery is not flat, then you need to make sure that the spark plugs work. It could be that they're overly dirty, which causes them not to spark. The spark plugs can be cleaned in the workshop.
Peugeot automobiles are equipped with a transponder that is compatible with the immobiliser. This ensures that only the right key can turn the engine. If the chip in the Peugeot key is damaged then it will not send the proper signal to the vehicle.
Water damage is a typical reason for this issue. This is a typical issue in more cold climates where the car has been exposed to rain or snow. In this case, contact a reputable locksmith who will have the required tools and equipment to change the key's programming. They will also have the latest technology and machinery needed to create the Peugeot smart key. The process shouldn't take more than 15 minutes.
Contacts for the battery that are defective
Peugeot replaced the old transponder chips using a new model that utilizes electronic components mounted on a circuit board. This new system works well when it's brand new, however, over time, the circuit boards start to wear out and stop functioning properly.
This can prevent the immobiliser from working, so your vehicle will not start. Contact a Peugeot specialist, or a locksmith, if this is the case.

Another issue that is common is when the battery for the key fob is dying, this causes the key blade to stop feeding into the lock. A locksmith in your car can replace the battery and cut a fresh blade for you, it's usually a simple fix.
Faulty Receiver Module
It could be that the receiver module has a problem in the event that your Peugeot key fob doesn't work 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 that controls the central locking system of your Peugeot vehicle.
peugeot key fob www.g28carkeys.co.uk is fitted with rubber seals that block water from getting to the electronic chip inside. Water can damage the chip if it is exposed to the water for an extended period of time. The high salt content of the ocean water or pool can cause damage to the key fob when it is submerged.
If your Peugeot spare key fob stops working You'll need the module replaced. This is only done by a skilled auto locksmith or Peugeot specialist. Peugeot keys, unlike other cars, are secured by an immobilizer device. This requires the right coding to start the car. This is why you must be able to trust a professional Peugeot locksmith to handle the task of programming and creating an appropriate replacement.
Computer with a problem on board
The on-board computer of your Peugeot is responsible for various functions in your car including airbags and power windows. When something goes wrong in these systems, they will usually display a code that indicates the issue. This code will be saved within the system until the issue is fixed. This could mean that the on-board computers to be replaced.
The most common cause of the warning light of the airbag to turn on is corrosion or loose connections in the sensor. This can occur due to wear and tear, ageing or exposure to moisture and salt. This problem should be addressed as soon as you can, because an airbag that is malfunctioning could pose danger in the event of an accident.
If you notice the error "card not found" on your Peugeot, the key battery in the key fob could be dead or weak. This prevents the key fob from sending a signal to disable your vehicle's immobilizer. You can test this by pressing the unlock button on the key fob and then trying to start your car. If this fails then the battery on the key needs to be replaced.