Peugeot 208 Key Replacement
Peugeot 208 key replacement should be left to experienced auto locksmiths with the right tools and know-how. They will be able to create and program new keys quicker than a dealership and at a lower cost.
A dead battery for your coin is the most likely cause when your key fob stops locking or unlocking doors. There are other reasons that the key might be malfunctioning.
Dead Coin Battery
A dead coin battery can prevent your Peugeot 208 from locking or unlocking, and will not allow you to start the engine. In this instance you'll need choose the alternate method to start found in your vehicle's owner's manual.
Another reason why your 208 may not start is that the spark plugs have been worn down. The spark plugs ignite the fuel to start the engine. They only last for a certain amount of time. They will eventually break down when they aren't used enough.
Fortunately, there's an easy solution for this issue. Check the voltage of the battery with a multimeter. If the voltage is less than 11,5 volts, it's time to replace it. If the battery is corroded, it is important to clean its contacts. This can be done by removing the rubber covers off the two battery terminals, and then using a wirebrush, you can remove any damaged parts of the battery. You should then reconnect the cables to the positive and negative poles.
Water Damage
If your 208 won't start and the battery has not failed, you should check the spark plugs. You might find that they are dirty and they don't spark. This is easily fixed by cleaning the spark plugs in a workshop.
Peugeot cars are equipped with a transponder key that works with the car's ignition system. This guarantees that only the right key can turn the engine. If the chip in the Peugeot key is damaged then it will not send the correct signal to the vehicle.
Water damage is a typical cause of this problem. This is most common in colder climates. the vehicle might have been exposed to snow or rain. If this is the case, you should call a reputable auto locksmith who has all the tools and equipment required to change the key's programming. They will also have all the latest technology and machinery needed to create a Peugeot smart key. peugeot 207 key fob should take no more than 15 minutes.
Faulty battery contacts
Peugeot replaced the transponder chips with a new version that makes use of electronic components that are mounted on a circuit board. This new system works great when it's fresh, but over time the circuit boards begin to deteriorate and stop working properly.
This could stop the immobiliser chip from triggering and causing your car to not start. Contact an Peugeot specialist or a locksmith if this is the case.
The most frequent issue is when the battery of the key fob begins to die. This causes the blade of the key to stop feeding into the lock. A locksmith in your car will replace the battery and then cut a fresh blade for you. This is a simple solution.
Faulty Receiver Module
It could be that the receiver module is defective when your Peugeot key fob doesn't work after being dropped on the floor, exposed to a stormy rainstorm, or accidentally washed. The receiver is responsible for sending radio frequency signals to the onboard computer that controls the central locking system in your Peugeot vehicle.
Rubber seals on the key fob stop water from getting to the electronic chip. Water can damage the chip in the event that it is exposed water for long periods of period of. The high salt content of the pool or ocean water could cause damage to the key fob if it is submerged.
If your Peugeot spare key fob doesn't work, you'll need to have the module replaced. This can only by done by an Peugeot specialist or expert auto locksmith. Peugeot keys unlike other automobiles, are secured by an immobilizer system. This requires the correct coding to start the car. This is why you should only trust an experienced Peugeot locksmith with the task of creating and programming a replacement.
Faulty on-Board computer
The on-board computer in your Peugeot is responsible for many of the systems in your vehicle, from power windows to the airbags. The on-board computer will display a code if something goes wrong. This code is stored inside the system and will remain there until the issue is resolved. Most often, this involves replacing the on-board computer.
One of the most frequent causes of the light turning on is loose or corroded connections in the airbag sensor. This could be due to wear and tear, aging, or exposure to moisture and salt. It is imperative to have this issue resolved as soon as possible, as an airbag that is malfunctioning can be dangerous in the event of an accident.

If you notice a card not found error on your Peugeot, the key battery inside the key fob could be weak or dead. This can prevent the key fob from sending a signal to disable your vehicle's standard immobilizer. Try this by pressing the unlock key on the fob's key, then trying to start your vehicle. If this fails then the battery on the key is in need of replacement.