Peugeot 208 Key Replacement
Peugeot 208 key replacement should be left to auto locksmiths with experience who have the appropriate equipment and technical know-how. They will be able to create and program new keys much quicker than a dealership and at a lower price.
A dead battery for your coin is most likely to blame the reason why your key fob isn't locking or unlocking doors. There are other causes for the key to be malfunctioning.
Dead Coin Battery
A dead battery can stop your Peugeot 208 from locking and unlocking, and also stopping it from starting the engine. If this is the case, you'll need to utilize the backup starting method which is explained in the owner's manual of your vehicle.
The spark plugs might also be worn out. The spark plugs are responsible for instigating the fuel which starts the engine. However, they have a limited time of life. If they aren't utilized enough, they will eventually fail.
There is a simple solution to this issue. Check the voltage of the battery with a multimeter. If it's less than 11.5 Volts then you must replace it. If the battery has corrosion it is necessary to clean its contacts. This can be done by lifting the rubber covers covering both battery terminals and using wire brushes to clean any corroded areas of the battery. You should then reconnect the cables that connect the positive and negative poles.
Water Damage
If your 208 isn't starting and the battery isn't running, then make sure that the spark plugs are functioning. It is possible that they're overly dirty, which causes them not to spark. This can be fixed by cleaning the spark plugs in the workshop.
Peugeot automobiles use a transponder key that works with the car's ignition system. This ensures that only the right key can turn the engine. If the chip inside the Peugeot key is damaged, it will not send the proper signal to the vehicle.
Water damage is a typical cause of this issue. This is a typical issue in colder climates where the vehicle is exposed to rain or snow. In this instance, you should contact a reputable locksmith who will have the necessary tools and equipment to reprogram the key. They'll also have the latest technology and equipment required to make a Peugeot smart key. The process should take no more than 15 minutes.

Contacts with the battery may be damaged.
Peugeot changed from the old carbon encased transponder chips and introduced a new type of chip that uses electronic components in circuit boards. This new system works great when it's new, however, over time, the circuit boards begin to deteriorate and stop working correctly.
This could prevent the immobiliser chip from triggering and causing your car to not start. Contact a Peugeot specialist or a locksmith, if this is the situation.
Another issue that is common is when the battery for the key fob gets depleted, which causes the key blade to stop being able to feed into the lock. A locksmith in your car will replace the battery and then cut a new blade for you. This is a quick solution.
Faulty Receiver Module
It could be that the receiver module is defective 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 module is responsible for transmitting radio frequency to the onboard computer that regulates the central locking system of your Peugeot vehicle.
Rubber seals on the key fob prevent water from getting to the electronic chip. Water can damage the chip when it is exposed to water for long periods of period of. The high salt content in the ocean or pool could cause damage to the key fob, especially if it is submerged.
If your Peugeot spare key fob stops working You'll need the module replaced. This is only performed by a professional auto locksmith or Peugeot specialist. Peugeot keys like other cars are secured by an immobilizer device. This requires the correct programming to allow the car to start. This is why it is imperative that you should only trust the Peugeot locksmith to design and program an alternative.
Computer on board is not working properly
The on-board computer in your Peugeot is responsible for many of the systems in your car, including power windows and airbags. When something goes wrong in these systems, it will typically show a code that identifies the issue. This code will be stored within the system until the issue is resolved. This could mean that the on-board computers to be replaced.
One of the main causes of the airbag light turning on is the loose or corroded connections within the airbag sensor. This could be due to wear and tear, aging, exposure to salt and moisture. This issue must be taken care of as soon as you can, because an airbag that is malfunctioning could be dangerous in the event of an accident.
If you see the error "card not found" on your Peugeot, the key battery inside the key fob may be weak or dead. This prevents the key fob from sending a signal that disables the immobilizer on your vehicle's standard. You can test this by pressing the unlock button on the key fob, then trying to start your vehicle. If peugeot car key replacement does not work the battery on the key has to be replaced.