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Citroen Berlingo Key Fob Troubleshooting Citroen Berlingo Multispace fills a niche in the market for people carriers. Its sliding rear door allows it to be easily inserted into bay parking spaces, and its robust cabin is more durable than many upmarket rivals. But if your key fob has bathed in soapy or salt water, it could not work again – even after a fresh battery and reprogramming. This is because the internal chip has been damaged by exposure to water. Water Damage Shake the key fob of yours to take out as much water as you can. Lay it flat with the button side facing up and allow it to drain for a short time while you clean the inside with a cloth. This should prevent any condensation from causing damage to the electronic chip. If the warning light on your dashboard that looks like a car and has an image of a key illuminates on your Mk 2 or Mk 3 Citroen Berlingo then this could be a sign of an immobilizer fault. This is a security feature inside the vehicle that blocks thieves from hotwiring. If this is the case, then you should go to an Citroen dealer or a qualified mechanic to resolve the problem. A constant engine warning light could indicate that the electric power assisted steering system is malfunctioning. If this is the case it is recommended to stop the vehicle and check the temperature and pressure of the oil before restarting it. If the problem continues to persist, you'll need to consult a Citroen dealership or a trained mechanic to resolve the problem. Dead Battery The most common cause of the key fob that isn't working in your Berlingo is an inactive coin battery. The button cell inside the key can be replaced easily but it is crucial to select the correct voltage, size and type of battery. A non-compliant cell could damage the circuit. A dead coin-cell battery can also disable anti-theft. This is a security measure that stops the engine from being started without an actual key. If the key fob isn't responding to the lock button, even after replacing the battery it could be because the receiver module is damaged and is not communicating with other modules in your vehicle. An OBDII scanner can help diagnose this issue. If the key fob is still not responding, you can try reprogramming. Follow the instructions in your owner's manual to do this. After citroen dispatch remote key replacement is reprogrammed device should function as expected. Fault Diagnosis Citroen Berlingo owners are generally pleased with the vehicle's reliability. However, like all vehicles there are some issues that occur. A key fob that is not working is one of the most frequently encountered issues. This is an easy issue to diagnose and can easily be resolved within a matter minutes. Other issues 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 remember that not all key fob batteries are created in the same way. Some batteries are made of inferior materials and could damage your remote key fob or other electronic components inside your vehicle. When replacing the battery, make sure you make sure you use a battery of the same voltage and type as the original. Make sure that the new battery is inserted correctly. When inserting the battery into the slot, ensure that the positive (+) face of the battery is facing upwards. If you see an exclamation mark in the form of an oval on your dashboard, it means that there is an issue with the vehicle's electric power-assisted driver. If this warning illuminates during driving, it is recommended that you seek help by a trained mechanic or Citroen Berlingo (incl Multispace) dealership. Radio Interference Radio interference could be the reason your key fob's not functioning at all. This is a problem that can be caused by devices operating on the same frequency as remote controls. For example, some wireless security systems, as well as aftermarket LED lights can interfere with radio frequency signals. If you have any of these at home, you can try moving them into a different space to see if it helps. In addition to devices using the same frequency, there are also environmental factors that can hinder the operation of a key fob. For instance, metal objects can alter the strength of the signal. In addition, rainy weather can make the fob's antenna turn, which results in an ineffective signal. In some instances, the key fob may not respond to radio signals even if it is near to the vehicle. Check the battery to ensure your key fob's health. The battery is in good condition and the contacts should not be corroded. Contacts that are corroded are the primary reason for the fob's key not responding to the vehicle's radio signals. A depleted or damaged battery can cause fobs to malfunction. If the issue continues to persist after replacing the battery the antenna may be faulty. A professional locksmith will examine the key fob and make the necessary repairs.