Peugeot 208 Key Replacement
Peugeot 208 key replacement should be left to auto locksmiths with experience who have the proper equipment and know-how. They will be able to make and program new keys much quicker than a dealership and at a cheaper cost.
If the key fob has stopped locking or unlocking your doors, it is likely due to a dead coin battery. There are other causes why the key may be malfunctioning.
Dead Coin Battery
A dead battery can stop your Peugeot 208 from locking and unlocking, as well as stopping it from starting the engine. If this is the case, you'll need to make use of the backup starting procedure which is explained in your vehicle's owner manual.
The spark plugs might also be worn out. The spark plugs ignite the fuel to start the engine. They are only able to last for a short time. They'll eventually break down when they aren't used enough.
There is a straightforward solution to this issue. Verify the voltage of your battery with a multimeter. If it's below 11.5 Volts and you are not satisfied, then it is time to replace it. If the battery is corroded it is essential to clean its contacts. This can be accomplished by removing the rubber cover from the two battery terminals, and then using a wirebrush to remove any damaged parts of the battery. Then, you should reconnect the positive and negative pole cables.
Water Damage
If your 208 will not start and the battery has not gone flat, you should inspect the spark plugs. It could be that they are overly dirty, causing them to not to spark. The spark plugs can be cleaned in an workshop.
Peugeot cars are equipped with transponder keys that works with the car's ignition system. This makes sure that only the correct key is able to start the engine. If the chip in the Peugeot key is damaged then 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 could have been exposed to rain or snow. In this case, contact a reputable locksmith who will have the tools and equipment required to modify the key. They also have the latest technology and equipment needed to create the Peugeot 208 smart key. The process shouldn't take more than 15 minutes.
Faulty battery contacts
Peugeot changed from the old carbon-encased transponder chips to a brand new type of chip that relies on electronic components in circuit boards. This new system works well when it's fresh, but over time the circuit boards start to lose their effectiveness and cease working correctly.
This could stop the immobiliser from working, so the vehicle won't start. Contact a Peugeot specialist or a locksmith, if this is the situation.
A common problem is when the battery of the key fob begins to die. This causes the blade of the key to stop feeding into your lock. A car locksmith will replace the battery, and cut a new blade for you. This is a simple fix.

Faulty Receiver Module
It could be that the receiver module is malfunctioning in the event that your Peugeot key fob fails to function after being dropped on the floor, or exposed to a sudden 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.
The rubber seals on the key fob keep water from getting to the electronic chip. The chip can be damaged by water when it is exposed to water for long periods of time. Submerging the key fob into the ocean at the beach or throwing it into the water can be particularly damaging due to the high salt content.
If your Peugeot spare key fob isn't working You'll need the module replaced. This is only done by an Peugeot specialist or a professional auto locksmith. Peugeot keys like other cars are protected by an immobilizer system. G28 Car Keys requires the correct programming to allow the car to start. It is for this reason that you should only rely on the Peugeot locksmith to design and program a replacement.
Computer on-board is not working properly
The computer on board in your Peugeot is responsible for a number of the systems in your car, ranging from power windows to the airbags. If something goes wrong with these systems, they will usually display a code that indicates the issue. This code is stored inside the system and stays there until the issue is fixed. Most often, this involves replacing the onboard computer.
The most common cause of the warning light for the airbag to flash is corrosion or loose connections in the sensor. This can be caused by wear and tear, aging, or exposure to moisture and salt. It is essential to have this issue addressed as quickly as possible, since an airbag that is not functioning properly could be dangerous in the event an accident.
If you find a card not found error on your Peugeot key fob, the battery in the key fob might be dead or weak. This will stop the key fob from sending a signal to deactivate the immobilizer on your vehicle. You can test this by pressing the unlock button on the key fob, then attempting to start your car. If this fails, the key battery must be replaced.