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Peugeot 308 Key Fob Problems and How to Fix Them
If your Peugeot key fob suddenly stopped working it could be because of a dead coin-cell battery or damaged receiver modules, water issues, or a malfunctioning chip. Fortunately, these issues are easy to fix, and you'll have your car back to normal in no time at all!
Car keys can also get damaged due to the fact that the blade on the key gets worn. This is an easy fix when you visit your local Car Key Man Auto Locksmith and let them fit a new key blade for you.
Battery
The key fob in your Peugeot 308 may die or become weak enough to not send a clear signal. The key fob may be inoperable and prevent you from locking or unlocking your doors or starting the engine. To fix this, you'll need to replace the battery inside your key fob.
You'll need a new battery from an auto parts shop or your local hardware store. Make sure the battery is brand new and not stored on the shelf for too long. A brand new battery will have more capacity and can send a more powerful signal to the car.
After replacing the battery try unlocking the doors and locking them with the key fob. If the doors don't open, it's likely that the receiver module inside the car is responsible. The local Peugeot dealer can reprogramme the receiver module.
It's also possible that the key fob's internal chip has been damaged. You could harm your key fob if you drop it on the ground, or expose it to water. The rubber seals that protect the chip from moisture might become worn down over time especially if your key ring is exposed to water for long durations, like submerging it in the ocean at the beach. To avoid this from happening, it's essential to protect your key fob from moisture and to never let it come into contact with water.
The KeyLab give up on your key fob if it gets wet, regardless of whether you slipped into a pool or fumbled into a puddle. The key fob is protected by rubber seals, however, prolonged exposure to water could damage its electronic chip. Because water is a good conductor and conductor, any water that is able to get inside the key fob will cause a chain of short circuits that eventually destroy the chip. After removing the batteries, clean the contact surfaces with isopropyl and dry them completely before putting them back in.

Your Peugeot 308 may not start due to an unresponsive battery. If you have a spare vehicle, jumper cables may be used to get the engine running again. If the battery is causing the problem the battery will need to be replaced.
A defective receiver in your car may also block it from receiving the signal from the key fob. The key fob could be damaged or there may be a problem with the antenna, wiring or key fob itself. It may be necessary to program a new keyfob for your vehicle if you are using one. If you are unable to fix the problem yourself call an expert technician. A skilled technician will be able to determine the issue quickly and fix it immediately.
Radio Interference
Interference can result in problems such as a key fob that is not recognized or has a narrow range. It could be radiated or conducted, with the former being caused by power supply cables and speaker wiring passing too close to electrical components. Usually, rerouting the cables or moving them away from the components may solve the problem.
It's unlikely someone is watching your key fob signal in the intention of stealing your car or vehicle, but it's possible that radio frequency interference has drowned out the signal. Luckily, this is a simple issue to repair.
If you are having key fobs that aren't being recognized, try an entirely new battery. Make sure that the battery is the right size and type. Incorrectly sized batteries can damage the fob.
These devices may interfere with the key signal if they use the same radio frequency. It is recommended not using these devices with your key fob.
Pairing Issues
The remote keyless entry system includes a receiver that receives radio frequency signals from the key fob. If this receiver develops problems, you won't be able to start your car regardless of whether the key fob is working and can be reset. The issue can be caused by a variety different ways, such as an inoperative battery on the coin-cell or water damage. The receiver could be malfunctioning because of an internal or software glitch or damage to the key itself.
The battery inside your Peugeot 308 keyfob may have died. It is easy to replace it by using a fresh battery, but it's essential to select the correct battery for your key fob. It is best to choose batteries that are the same size as well as voltage and specifications as the original.
Your Peugeot 308 keyfob may not function if associated with another vehicle. It is possible that you have accidentally given your key fob away to someone else or it was used to unlock other vehicles. This can be resolved by reprogramming your key fob with an OBDII scanner. The tool will ask you for information about your vehicle, for example, its VIN or engine type. It is crucial that you enter the correct details.