Peugeot Keys 101"The Complete" Guide For Beginners
Peugeot 208 Key Replacement
Peugeot 208 key replacement should be left to professional auto locksmiths who have the right equipment and technical knowledge. They can create and program new keys much quicker than a dealership and at a lower price.
If your key fob stopped locking or unlocking your doors it could be due to a dead battery in the coin. There are also other reasons that the key might be malfunctioning.
Dead Coin Battery
A dead coin battery will prevent your Peugeot 208 from locking or unlocking, and will not start the engine. If this is the case, you'll have to utilize the backup starting method that's described in the owner's manual of your vehicle.
The spark plugs might also be worn out. The spark plugs are responsible to ignite the fuel that powers the engine. However they are limited in their life span. If they aren't used enough, they will eventually fail.
There is a simple solution to this issue. Check the voltage of your battery using a multimeter. If the voltage is below 11,5 volts then it's time to replace it. If the battery is corroded it is necessary to clean its contacts. This can be done by removing the rubber covers off the two terminals on the battery and then using a wirebrush to remove any parts of the battery that are corroded. Then, reconnect the positive and negative pole cables.
Water Damage
If your 208 doesn't start and the battery has not failed, you should check the spark plugs. It is possible that they are overly dirty, which causes them not to spark. This can be easily corrected by cleaning the spark plugs in an workshop.
Peugeot cars are equipped with a transponder style key that is compatible with the car's immobiliser system. This ensures that only the correct key is able to turn the engine. If the chip in the Peugeot key is damaged, it will not transmit the correct signal to the vehicle.
This is a frequent issue that is caused by water damage. This is most common in colder climates, as the vehicle might have been exposed to snow or rain. In this case, contact a reliable locksmith who has the required tools and equipment to change the key's programming. They'll also have the latest technology and machinery required to create the Peugeot smart key. The process should take no more than 15 minutes.
peugeot car keys of the battery may be damaged.
Peugeot changed from the carbon-encased transponder chips to an entirely new type of chip that incorporates electronic components in circuit boards. This new technology works great when it's brand new, however, over time, the circuit boards start to lose their effectiveness and cease working properly.
This can stop the immobiliser from working, so your vehicle will not start. If this is the case, it's a good idea contact a Peugeot specialist or locksmith.
The most frequent issue is when the battery in the key fob starts to fail. This causes the blade of the key to stop feeding into your lock. A locksmith in your car will replace the battery, and cut a new blade for you. This is a quick solution.
Faulty Receiver Module
If your Peugeot key fob isn't working after dropping it on the floor, getting exposed to a sudden rain or accidently washing it the wrong way, it could be due to a malfunctioning receiver module. The receiver module is responsible for transmitting radio frequency to the onboard computer that controls the central locking system of your Peugeot vehicle.
The key fob itself is fitted with rubber seals that prevent water from getting to the chip inside. The chip can be damaged by water when it is exposed to water for long periods of time. Submerging the key fob into sea water at the beach or throwing it into the pool can be particularly damaging due to the high salt content.
If your Peugeot spare key fob doesn't work it is necessary to have the module replaced. This can only be done by a skilled auto locksmith or Peugeot specialist. Peugeot keys unlike other automobiles, are secured by an immobilizer device. This requires the correct programming to allow the car to start. This is why you must be able to trust a professional Peugeot locksmith for the job of creating and programming an alternative.
Computer on-board is not working properly
The computer on the board of your Peugeot is responsible for a variety of the systems in the car, from power windows to the airbags. When something goes wrong in these systems, they will usually show a code that identifies the issue. This code will be stored in the system until the issue is fixed. This may require the on-board computers to be replaced.
The most typical reason for the airbag warning light to illuminate is corrosion or loose connections within the sensor. This could be due to wear and tear, age or exposure to salt and moisture. This issue should be addressed as soon as you can, because an airbag that is not functioning could pose a risk in the event of an accident.

If your Peugeot is showing a card that is not being detected error then the key battery inside the key fob might be weak or dead. This will stop the key fob sending a signal that will disable your vehicle's immobilizer. Test this by pressing the unlock key on the key fob, and then trying to start your car. If this doesn't work then the battery in the key fob must be replaced.