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Citroen Berlingo Key Fob Troubleshooting Citroen Berlingo Multispace fills a niche in the market for people carriers. Its sliding rear doors allow it to fit into bay parking spaces and its robust cabin is more smack-proof than the most expensive rivals. If your key fob was submerged in saltwater or soapy water, it may not work in the future, even after replacing the battery and the reprogramming. This is because the internal chip has been damaged due to exposure to water. Water Damage After getting your key fob back from whatever pool, puddle or washing machine it's been swimming in, clean it of as much water as you can by shaking it. Lay it down with the button in the downward position and let it dry for a couple of minutes while you clean the inside with a soft cloth. G28CarKeys should stop any condensation from damaging the electronic chip. If your Mk 2 Citroen Berlingo or Mk 3 Citroen Berlingo dashboard warning light, which looks like a car key symbol, illuminates then this could indicate an issue with the immobilizer. This is a security function in the vehicle to prevent thieves from hotwiring. If this is the case, then you will need to visit an Citroen dealer or a qualified mechanic to fix the issue. A constant warning light could indicate that the electric power-assisted steering has a problem. If this is the case, then you should stop the car and ensure that the pressure in the oil is fine and the temperature isn't too high prior to resuming it. If the issue persists, you will need to visit a Citroen dealer or a certified mechanic to fix the problem. Dead Battery The most common cause of the key fob not working inside your Berlingo is a dead coin battery. The button cell inside the key can be easily replaced, but it is important to use the right voltage, size, and type of battery. A battery that isn't compatible could cause damage to the circuit board. A dead coin battery may also disable the anti-theft system. This is a safety measure which prevents the engine from being started without the physical key. If the key fob still isn't responding to the lock button, even after replacing the battery, it could be because the receiver module is defective and not communicating with other modules in your vehicle. This can be detected using an OBDII scan tool. If the key fob isn't working, you may try reprogramming it. To do this, follow the guidelines in the manual for your owner. It should work as expected once it has been reprogrammed. Fault Diagnosis Citroen Berlingo owners are generally happy with the vehicle's reliability. Like all vehicles, there are a few issues that can arise. A key fob that is not working is one of the most frequent problems. This is an easy issue to diagnose and can easily be repaired within a matter minutes. Other problems include a worn-out button, water damage on the electronic chip and interference in the signal, or a remote system receiver module with a fault. It is important to realize that not all keyfob batteries are the same. Certain batteries are made from inferior materials and can damage your remote key fob as well as other electronic components in your vehicle. Make sure to use only batteries that are of the same type and voltage as the original when replacing the battery. Make sure the new battery is inserted correctly. Make sure the positive (+) side of the battery faces upwards when it is placed in the battery slot. If you see an alert light on your car's dashboard that appears to be an exclamation mark, this indicates that the vehicle has detected a problem with its electric power-assisted steering. If this warning light illuminates while you are driving and it is not able to be removed, we recommend you seek out a certified mechanic at the Citroen Berlingo dealer (incl Multispace). Radio Interference Radio interference could be the reason that your key fob isn't working suddenly. This is a typical issue caused by devices that operate on the same frequency as your remote control. For instance, certain wireless security systems as well as aftermarket LED lights can interfere with radio signals. Move these devices to another location if you have them at home. In addition to devices that use the same frequency, there are environmental factors that could interfere with the car's key fob. For instance, metal objects could influence the strength of the signal. Rainy weather can also cause the antenna of the key fob to bend, leading to an ineffective signal. In certain situations, the key fob may not be able to receive radio signals even though it is near to the vehicle. Examine the battery to ensure the health of your key fob. The battery should be in good shape and the contacts shouldn't be affected by corrosion. A damaged connection is the primary reason the fob's keypad does not respond to radio signals coming from the vehicle. A depleted battery could cause the fob to malfunction. If you replace the battery, but the issue persists, it's likely that the antenna is not functioning properly. A professional locksmith can inspect the key fob and make any necessary repairs.