Peugeot 208 Key Replacement
Peugeot 208 key replacement should be left to experienced auto locksmiths who have the proper tools and know-how. They can create and program keys quicker and more efficiently than dealers.
If your key fob has stopped locking or unlocking your doors, it could be due to a dead coin battery. However, there are many other reasons that the key may be malfunctioning.
Dead Coin Battery
A dead coin battery will prevent your Peugeot 208 from locking or unlocking, and won't start the engine. If this is the situation, you'll need apply the backup starting technique that is described in the owner's manual to your vehicle.
The spark plugs may also be worn out. The spark plugs ignite the fuel to start the engine. However they have a finite life span. They will eventually break down in the event that they aren't utilized enough.
Luckily, there is an easy solution to this issue. The best solution is to test the voltage of your car battery using a multimeter. If the voltage is less than 11,5 volts, it's time to replace it. It is also important to clean the battery's contacts if it has corrosion. This can be accomplished by removing the rubber cover from the two battery terminals, and then using a wirebrush to clean any damaged parts of the battery. Then, reconnect the positive and negative pole cables.

Water Damage
If your 208 does not start and the battery has not fallen flat, it is time to inspect the spark plugs. You might find that they're dirty and they don't spark. The spark plugs can be cleaned in an workshop.
Peugeot automobiles use transponder keys 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 won't send the correct signal to the vehicle.
Water damage is a typical cause of this issue. This is particularly common in colder climates, where the vehicle may have been exposed to rain or snow. In this situation, contact a reliable locksmith who has the necessary tools and equipment to change the key's programming. They will also have the most up-to-date technological know-how and the equipment required to create the Peugeot 208 smart key. The process shouldn't take more than 15 minutes.
Contacts of the battery may be damaged.
G28 Car Keys changed from the old carbon encased transponder chips to a new type of chip that relies on electronic components within a circuit board. The new system is fantastic in its initial state, but the circuit boards degrade over time and stop working properly.
This could stop the immobiliser chip from triggering, so your car won't start. If this is the case it's best to contact a Peugeot specialist or locksmith.
A common issue is when the battery in the key fob starts to die. This causes the blade of the key to stop feeding into the lock. A car locksmith will replace the battery and then cut a fresh blade for you. This is a simple fix.
Faulty Receiver Module
It could be that the receiver module is faulty in the event that your Peugeot key fob isn't working after being dropped on the floor, or exposed to a sudden downpour or accidentally washed. The receiver module is responsible for transmitting radio signals to the onboard computer that controls the central locking system of your Peugeot vehicle.
The key fob itself is fitted with rubber seals that block water from reaching the chip inside. Water can damage the chip in the event that it is exposed water for a prolonged period of period of. The high salt content in the ocean water or pool could cause damage to the key fob if it is submerged.
If your Peugeot spare key fob doesn't work You'll need the module replaced. This is only 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 coding for the start of the engine. This is why you should only choose a reputable Peugeot locksmith to handle the task of programming and creating a replacement.
Computers with faulty on-board computers
The on-board computer in your Peugeot is responsible for a variety of functions in your car including airbags and power windows. The on-board computer will display the code when something goes wrong. This code will be stored in the system until the issue is resolved. In most cases, this will require replacing the on-board computer.
The most typical reason for the warning light of the airbag to illuminate is corrosion or loose connections in the sensor. This could be due to wear and tear, aging, or exposure to salt and moisture. This issue needs to be addressed as soon as you can, because an airbag malfunctioning could be dangerous in the event of an accident.
If you see an error message stating that the card is not found on your Peugeot, the key battery inside the key fob could be dead or weak. This will stop the key fob from sending a signal to deactivate your vehicle's immobilizer. You can test this by pressing the unlock button on the key fob, then attempting to start your car. If this does not work it is likely that the battery needs to be replaced.