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Citroen Berlingo Key Fob Troubleshooting Citroen's Berlingo Multispace occupies a utilitarian space in the people carrier market. Its sliding rear door makes it easy to fit into bay parking spaces and its robust cabin is more durable than the majority of upmarket competitors. If your key fob was submerged in soapy water or saltwater It may not work again even after a new battery and programming. The internal chip has been damaged because of exposure to water. Water Damage After retrieving your key fob from whatever puddle, pool or washing machine it's been swimming in, get rid of as much water as possible by shaking it. Then, lay it on the button facing down and allow it to drain for a few minutes as you wipe the inside with a clean cloth. This will prevent any condensation from damaging your electronic chip. If your Mk 2 Citroen Berlingo or Mk 3 Citroen Berlingo dashboard warning light, which appears like a car key symbol, lights up, it could be an issue with the immobilizer. G28 Car Keys is a security function in the vehicle that stops thieves from hotwiring. If this is the case, then you must go to an Citroen dealership or trained mechanic to address the problem. A constant warning light could indicate that the electric power-assisted steering is not working properly. If this is the case, then you must stop the car and check that the oil pressure is ok and that the temperature isn't too high before you restart it. If the problem persists then you should visit a Citroen dealer or a qualified mechanic to resolve the problem. Dead Battery A dead coin battery is the most frequent reason for your key fob to not work in your Berlingo. The button cell battery within the key is simple to replace, but you must ensure that you use the correct voltage and size battery. An uncompatible battery can harm the circuit. A dead coin-cell battery can also disable the anti-theft feature. This is a security measure which prevents the engine from being started without a physical key. If the key fob still not responding to the lock button even after replacing the battery it could be an incompatible receiver module that is not communicating with the other modules in your car. OBDII scanners can identify this issue. If the key fob still not responding, try reprogramming. Follow the steps in your owner's manual for this procedure. It should work fine once it is changed. Troubleshooting Citroen Berlingo owners are generally satisfied with the vehicle's reliability. As with all vehicles problems can happen. One of the most common is a dead battery on the key fob. This is a simple problem to diagnose and can easily be repaired in a matter of minutes. Other issues that could arise include a worn-out button or a water damage to an electronic chip, signal interference or a remote keyless system receiver module that has developed a fault. It is important to realize that not all keyfob batteries are same. Some batteries are constructed from inferior materials and could cause damage to your remote or other electronic components. When replacing the battery, only make sure the replacement battery is of the same type and voltage as the original. Make sure that the new one fits correctly. When inserting the battery into the slot, make sure the positive (+) face of the battery is facing upwards. If you notice an exclamation point in the form of an equilateral triangle on your dashboard, it means that there is a problem with your vehicle's electric power assisted driving. If the warning light illuminates during driving, it is advised to seek help from a trained mechanic or Citroen Berlingo (incl Multispace) dealership. Radio Interference Radio interference could be a cause of your key fob not working suddenly. This issue could be caused by devices using the same frequency as a remote control. Some wireless security systems, for instance LED lights aftermarket, can interfere with the RF signal. If you have one of these gadgets at home, consider moving them into a different space to see if this helps. In addition to devices using the same frequency, there are also environmental factors that can interfere with the car's key fob. Metal objects, like a car can affect the signal strength. Rainy weather can also alter the antenna of the fob, which results in a weaker radio signal. In some cases even if the fob's location is close to the car it might not respond to radio signals. To make sure that your key fob is functioning properly examine the battery. The battery must be in good condition and the contacts must not be corroded. A corroded contact is an important reason for the fob's key not responding to the radio signals. A drained battery can cause the fob to malfunction. If you replace the battery but the issue persists, it's possible that the antenna is faulty. Locksmiths can check the keyfob and make repairs.