Peugeot 208 Key Replacement
Peugeot 208 key replacement is best left to professional auto locksmiths with the right equipment and technical know-how. They will be able to make and program new keys faster than a dealership would and at a lower price.
If peugeot keys G28 Car Keys stopped locking or unlocking your doors, it could be due to a dead battery in the coin. However, there are many other reasons the key could be malfunctioning.
Dead Coin Battery
A dead coin battery will stop your Peugeot 208 from locking and unlocking, and also making it impossible to start the engine. If this is the case, you'll have to make use of the backup starting procedure that is described in the owner's manual to your vehicle.
Another reason why your 208 may not start is that the spark plugs have worn down. The spark plugs light the fuel to start the engine. However they have a short time of life. They will eventually break down in the event that they aren't utilized enough.
There is a simple solution to this issue. Check the voltage of your battery with a multimeter. If it's below 11.5 Volts, then you need to replace it. If the battery is damaged it is crucial to clean its contacts. You can do this by lifting the rubber covers that protect the two battery terminals and using wire brushes to clean any corroded parts of the battery. Then, reconnect the cables that connect the positive and negative poles.
Water Damage
If your 208 won't start and the battery has not been replaced, you must look at the spark plugs. You may find that they are simply too dirty and do not spark. This can be fixed by cleaning the spark plugs in a workshop.
Peugeot automobiles use a key with a transponder that is compatible with the immobiliser. This ensures that only the right key is able to start the engine. If the chip in the Peugeot key is damaged, it won't send the proper signal to the vehicle.
Water damage is the most common cause of this issue. This is a common problem in areas with colder temperatures where the vehicle is exposed to snow or rain. In this case, contact an experienced locksmith who will have the necessary tools and equipment to change the key's programming. They will also have the latest technology and equipment required to create the Peugeot smart key. The process shouldn't take longer than 15 minutes.
Contacts with the battery may be damaged.
Peugeot changed from the old carbon encased transponder chips to a brand new kind of chip that utilizes electronic components within circuit boards. This new technology works great when it's new, but over time the circuit boards begin to degrade and stop working properly.
This can prevent the immobiliser chip from working and causing your car to not start. If this happens, it's recommended to call a Peugeot specialist or locksmith.
A common issue occurs when the battery of the key fob starts to fail. This causes the blade of the key to stop feeding into the lock. A locksmith for cars 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 is responsible for sending radio frequency signals to an on-board computer that controls the central locking system inside your Peugeot vehicle.
The rubber seals on the key fob stop water from reaching the electronic chip. However, prolonged exposure to water may be able to penetrate these seals and cause damage to the chip. Submerging the key fob into the ocean 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 stops working then you'll have to get the module replaced. This should be done by an Peugeot specialist or expert auto locksmith. Peugeot keys unlike other automobiles, are protected by an immobilizer system. This requires the proper code to begin the car. This is the reason that you should only trust a Peugeot locksmith to design and program the replacement.
Computers with faulty on-board computers

The on-board computer inside your Peugeot is responsible for many of the systems inside the car, from power windows to the airbags. If something goes wrong with these systems, it will typically display a code indicating the issue. The code will be stored in the system until the issue is fixed. This may require the on-board computers to be replaced.
One of the most frequent causes of the airbag light coming on is loose or corroded connectors in the airbag sensor. This can be caused by wear and tear, aging, or exposure to salt and moisture. This issue must be taken care of as soon as you can, since an airbag malfunctioning 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 battery inside the key fob might be weak or dead. This could prevent the key fob from sending a signal that disables your vehicle's standard immobilizer. Test this by pressing the unlock button on the fob's key and then trying to start your car. If this does not work the battery on the key must be replaced.