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Peugeot 308 Key Fob Problems and How to Fix Them
If your Peugeot key fob suddenly stopped functioning it could be because of an inoperative battery for the coin-cell, water damage, receiver modules issues, or a defective chip. These are all easy solutions that will bring your car back to speed in no time!
Car keys can also fail due to the fact that the blade on the key gets worn. This is an easy fix if you visit your local Car Key Man Auto Locksmith and let them put in the new blade for you.
Battery
The key fob in your Peugeot 308 may die or become weak enough to not send a strong signal. The key fob might be inoperable and prevent you from locking or unlocking your doors, or starting the engine. To fix this issue, you'll have to replace the battery inside your key fob.
You'll need to purchase a new battery from an auto parts shop or your local hardware store. Make sure that the battery is brand new and not sat on the counter for too long. A brand new battery will have greater capacity and will also be able to send a stronger signal the car.
After replacing the battery, try unlocking the doors and locking them with the key fob. If the doors do not unlock it's likely that the issue lies with the car's receiver module which can be changed by your local Peugeot dealer.
It's possible that the key fob's internal chip is damaged. This could happen when you drop your key fob on the ground or expose it to water. The rubber seals that protect the chip from moisture may become worn down over time especially if your key ring is exposed to water for extended period of time, like when you submerge it in the ocean at the beach. To stop this from happening, it's important to keep your key fob free from water and never let it come into contact with water.
If your key fob becomes soaked regardless of whether you dropped it into the pool or fumbled it into a puddle, don't think it's a case of lost cause. Although the key fob is equipped with rubber seals to protect it from water, prolonged exposure to water could cause damage to its electronic chip. Water is a great conductor and any water that gets inside the key fob will trigger the short circuits to be in series which can eventually harm the electronic chip. After removing the batteries clean the contact surfaces with isopropyl. Dry them completely before putting them back in.
Your Peugeot 308 may not start because of a dead battery. Jumper cables can be a great option to restart the engine in case you have an additional vehicle. If the battery is faulty, it must be replaced.
A bad receiver in the car can also prevent it from receiving the signal from the key fob. The key fob may be damaged, or there could be a problem with the antenna, wiring or key fob itself. If you have a new key fob, it could need to be programmed for the vehicle. If you're unable to solve the issue yourself call a professional technician. A technician trained in the field will be able identify the issue quickly, and fix it immediately.

Radio Interference
The signs of a key fob not being recognized or with a limited range often mean that there is an interference in the system. It could be radiated or conducted, with the latter being caused by power supply cables and speaker wiring passing too close to electrical components. In general, rerouting cables or moving them away from these components will resolve the issue.
It's unlikely that anyone is listening in on your key fob signals to steal your car, but it's possible that the signal has been masked by radio frequency interference. This is a simple problem to fix.
If you're experiencing a problem with your key fobs that aren't being recognized, try using an entirely new battery. Also, make sure that the battery is the right size and type. Batteries that aren't the correct size could damage your battery.
Some aftermarket alarm systems and radar detectors operate on the same radio frequency as your key fob, and this can cause them to interfere with your key signals. Beware of attaching these devices to your key fob.
Pairing Issues
The remote keyless entry system has an antenna that receives radio frequency signals from the key fob. If the receiver has developed problems, you won't be capable of starting your car, even if the key fob is working and is changed. The issue can be caused by a number of causes, including the dead battery in the coin and water damage. The receiver could also be malfunctioning due to an internal or software glitch or damage to the key itself.
One of the main reasons why your Peugeot 308 key fob isn't working is because the coin battery inside has gone out of service. It is possible to replace it by a new battery but it's essential to select the correct battery for your key fob. A bad battery can lead to further problems with the key fob, therefore it is recommended to use either the original battery or the replacement that is identical in size, voltage, and specifications.
Your Peugeot 308 keyfob may not work if it has been linked to a different vehicle. You may have accidentally given your key fob to a friend, or the key was used to unlock other vehicles. This issue can be solved by reprogramming your key fob using an OBDII scan. The tool will ask you for information about your vehicle, for example, its VIN or engine type. It is vital to enter the correct details.