Peugeot 208 Key Replacement

Peugeot 208 key replacement is best left to professional auto locksmiths with the right equipment and know-how. They will be able to make and program new keys faster than a dealership would and at a lower price.

A dead battery for your coin is most likely to be at fault the reason why your key fob isn't locking or unlocking the doors. However, there are many other reasons that the key may 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's described in the owner's manual for your vehicle.

Another reason why your 208 might not be starting is that the spark plugs have worn down. The spark plugs are responsible to ignite the fuel which starts the engine. They only last for a certain amount of time. If G28CarKeys used enough they will eventually fail.

Luckily, there is an easy solution to this issue. Verify the voltage of your battery using a multimeter. If the voltage falls below 11,5 volts, it's time to replace it. It is also essential to clean the battery's contacts if it has corrosion. This can be done by lifting the rubber covers that protect the two terminals of the battery and using wire brushes to clean any parts that are corroded from the battery. You should then reconnect your cables to connect the positive and negative poles.

Water Damage

If your 208 won't turn on and the battery is not flat, then you need to make sure whether the spark plugs are functioning. It is possible that they're dirty, causing them not to spark. The spark plugs can be cleaned in an workshop.

Peugeot cars have transponder keys that works with the car's ignition system. This ensures only the correct key is able to turn the engine. If the chip inside the Peugeot key is damaged then it will not send the proper signal to the vehicle.

Water damage is the most common cause of this problem. This is a frequent issue in areas with colder temperatures where the vehicle is exposed to snow or rain. In this case, you need to contact an experienced locksmith who will have the tools and equipment needed to change the key's programming. They also have the latest technology and the machinery needed to make a Peugeot 208 smart key. The process shouldn't take more than 15 minutes.

Faulty battery contacts

Peugeot replaced the transponder chips using a new model that utilizes electronic components mounted on a circuitboard. The new system is fantastic when it's brand new, but the circuit boards wear out over time and stop working properly.

This could prevent the immobiliser chip from triggering, so your car won't start. Contact a Peugeot specialist, or a locksmith if this is the situation.

The most frequent issue is when the battery of the key fob begins to fail. This causes the blade of the key to stop feeding into your lock. A locksmith for cars can replace the battery and cut a fresh blade for you, this is normally a quick fix.

Faulty Receiver Module

If your Peugeot key fob stopped working after dropping it on the floor, or being exposed to a sudden rain or accidentally washing it the wrong way, it could be due to a defective receiver module. The receiver is responsible for sending radio frequency signals to an on-board computer, which controls the central locking system within your Peugeot vehicle.


The rubber seals on the key fob prevent water from reaching its electronic chip. The chip can be damaged by water in the event that it is exposed water for a long time. 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.

The module will need to be replaced if your Peugeot spare key is no longer working. This is only done by an expert auto locksmith or Peugeot specialist. Like other automobiles, Peugeot keys are protected by an exclusive immobilizer system that requires the correct coding to start the engine. This is the reason why you should only trust an experienced Peugeot locksmith to take on the job of programming and creating an alternative.

Computers with faulty on-board computers

The on-board computer of your Peugeot is responsible many systems in your car, including power windows and airbags. The computer on board will display an error code when something goes wrong. This code is stored in the system and will stay there until the issue is fixed. Usually, this will mean replacing the onboard computer.

One of the most frequent reasons for the airbag light flashing is loose or corroded connections in the airbag sensor. This can be caused by wear and tear, ageing, or exposure to salt and moisture. It is important to have this issue addressed as soon as possible, since a malfunctioning airbag can be dangerous in the event an accident.

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