Peugeot 308 Key Fob Replacement
Peugeot's 308 may be a bit old but it's eye-catching. It's not the most luxurious car in its class, but it is a relaxing and civilised driving experience.
We are often asked at Coded Car Keys to replace peugeot key fobs. The following suggestions will aid whether the issue is ongoing or intermittent.

Water Damage
If you happen to leave your key fob in a puddle or get it wet while swimming, kayaking, canoeing, rafting, or canyoning, it's most likely to suffer water damage. Keep your key fob in a dry bag every time you are outside or perform things that expose it to excessive amounts water.
It's also crucial to ensure sure that the fob is completely dried before you open it and use it again. If you detect any smells emanating from the fob such as an industrial-type smell or a sour taste like windshield washer fluid, it's another sign that it's been submerged in water.
peugeot 2008 key that is wet can cause the battery's charge to be drained or even explode. If you can get your 308 keyfob out of the water it is best to turn the button side up and shake as much water out as you can prior to opening the casing. When you've opened it, take off the battery and wipe the circuit board with an abrasive soaked in 90-percent isopropyl alcohol.
Other causes why your Peugeot 308 remote entry keyless system might not function include a dead coin cell battery or receiver module issue signal interference or a damaged chip. If none of the above is the problem you can restart the system by disconnecting 12 Volt battery from the car for 15 minutes.
Dead Coin Battery
Peugeot cars come with remote start systems that lets drivers start their vehicle from the distance, allowing them to warm up or cool down the car before entering. This feature is extremely beneficial particularly during the cold winter months. However, it is possible that the remote start system stops working due to a variety of reasons, like the battery of a coin that is dead.
A coin-shaped battery located inside the key fob has a life span of two to four years, based on how often it is utilized and where it was purchased. Its use-by date is typically printed on the package or listed in the instruction manual.
If the key fob stops working after being exposed to water that is clean, remove the battery and clean the electronic chip with an absorbent paper towel that has been soaked in isopropyl ethanol. Then dry the chip thoroughly before replacing. In case of exposure to salty or soapy water, the chip could be damaged and you'll require replacing the key fob altogether.
If you're unsure whether the battery is damaged it is possible to check its voltage with a multimeter connected to both the minus and plus terminals. The voltage should range from 12-13 volts however, if it reads lower, the battery must be replaced. You can also reset your computer onboard by disconnecting and reconnecting the 12 volt batteries in reverse order. (positive cable first then negative cable). The engine should now start.
Faulty Receiver Module
If you're unable to see the "Key Detected" message on your dashboard, then it's possible the receiver module has been afflicted with a fault. It's the part that sends an alert to the car when the key fob is activated, which acts as an immobiliser, and stops it from starting unless the correct key is in place.
This could be caused by a number of reasons, such as water damage or just the aging process. If your Peugeot 308 key fob has been exposed to dirty tap water, for example, the electronic chip inside may be damaged. In this scenario, you'll need to take the unit apart and clean it thoroughly using isopropyl alcohol or electronic cleaner. Once it's dry you can put the battery back in and try it again.
If the issue is not resolved, it is a good idea to consult a local Peugeot expert or locksmith. They can utilize the diagnostic tool to pinpoint the problem and fix it.
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Faulty Electronic Chip
The electronic chip that is in the Peugeot 308 key fob is a critical role in the remote control system. If the chip is damaged, you may experience difficulties starting your vehicle or receive a message stating "anti-theft". If this occurs, the only option to fix the issue is to purchase a new key. Professional auto locksmiths are able to provide this service within the shortest possible time.
The chip inside your Peugeot 308's key fob may fail due to different reasons, including sweat, water damage, or dirt. If your Peugeot 308 key fob has been exposed to soapy water, you should cleanse it immediately. You can clean the electronic component with paper towels soaked with isopropyl Alcohol. After that, you should let the battery completely dry.
Radio interference can cause a key fob's functionality to cease. This can be caused by other devices that operate at the same frequency as your Peugeot key fob. It can also be caused by bad weather or objects that are in the vicinity of the vehicle. It is recommended to visit a Peugeot dealer if you experience this issue.
The Peugeot Key Fob 207/308 is very delicate and requires special care. You should not drop it or throw it around. If you lose it, try to find it as quickly as possible. You can reset all on-board computers by disconnecting the battery that is 12 volts for a short period of time. Disconnect the negative cable before the positive.