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Citroen Berlingo Key Fob Troubleshooting Citroen Berlingo Multispace fills a niche in the market for people carriers. Its sliding doors at the rear allow it to fit into bay parking spaces and its sturdy cabin is more resistant to crashing than many of the more expensive rivals. However, if the device has bathed in soapy or salt water, it might not function properly again – even after a new battery and changing the program. The internal chip may be damaged due to exposure to water. Water Damage After you have rescued your key fob from whatever pool, puddle or washing machine it's been swimming in, get rid of as much water as you can by shaking it. Then, lay it on the button side facing up and allow it to drain for a couple of minutes while you wipe it clean using a towel. This will stop any condensation from causing damage to your electronic chip. If the dashboard warning light that looks like a car and has an image of a key is on your Mk 2 or Mk 3 Citroen Berlingo then this could indicate an immobilizer malfunction. This is a security device in the vehicle that blocks thieves from using hotwires. If this is the case then you need to visit a Citroen dealer or a trained mechanic in order to resolve the problem. A continuous engine warning light may indicate that the electric power assisted steering system is failing. If this is the case, then you must stop the car and make sure that the oil pressure is not too high and that the temperature isn't overly high before you start it. If the issue continues, you'll need to consult a Citroen dealer or trained mechanic in order to resolve the issue. Dead Battery The most common cause of the key fob not functioning in your Berlingo is a dead coin battery. The button cell battery within the key is easy to replace, but it is important to ensure that you are using the correct voltage, size and type of battery. A non-compatible cell can damage the circuit. A dead coin-cell battery could also disable anti-theft. This is a security function that prevents the engine from being started without a physical key. If the key fob still not responding to the lock button after replacing the battery It could be due to an unreliable receiver module that isn't communicating with other modules in your car. This can be diagnosed with an OBDII scan tool. If the key fob is still not responding, you can try reprogramming. To do this, follow the instructions in the owner's manual. After it has been reprogrammed, your device should be working perfectly. Diagnostics of a fault Citroen Berlingo owners are generally pleased with the reliability of their vehicle. However, like any vehicle there are a few issues that arise. A key fob that is dead is one of the most common problems. Fortunately, this is easy to find and is easily replaced in just a few minutes. Other issues that could arise are a worn button or button, water damage to the electronic chip, signal interference, or a remote keyless system receiver module that has developed an issue. It is vital to be aware that not all keyfob batteries are the same. Certain batteries are made from inferior materials and may damage your remote key fob as well as other electronic components in your vehicle. When replacing the battery, make sure you make sure you use a battery of the same type and voltage as the original. Also, make sure the new battery is properly fitted. Make sure that the positive (+) side of the battery is facing upwards when it is placed in the battery slot. If you notice an exclamation point in the form of an oval on your dashboard, it means that there is a problem with the electric power-assisted driving system in your vehicle. If the warning light appears while you're driving and you notice it, we suggest that you contact a trained mechanic at a Citroen Berlingo dealer (incl Multispace). Radio Interference If your key fob has stopped functioning at all it could be a result of radio interference. This issue could be caused by devices that use the same frequency as remote controls. For instance, some wireless security systems and aftermarket LED lights can interfere with the RF signals. Move these devices to an alternative location if you've got them at home. Environmental influences can also disrupt the key fobs of the car in addition to other devices that operate on the same frequency. For The Key Lab , metal objects could influence the strength of the signal. Rainy weather can also cause the antenna of the key fob to turn, which results in an ineffective signal. In some instances, even when the key fob is close to the vehicle it might not respond to radio signals. Examine the battery to confirm your key fob's health. It must be in good health and the contacts must be free of corrosion. A corroded contact is one of the main reasons for key fobs not responding to the vehicle's radio signals. A depleted battery could cause fobs to fail. If you replace the battery and the issue persists, it is likely that the antenna is defective. A locksmith can inspect the keyfob to make repairs.