Citroen Berlingo Key Fob Troubleshooting
Citroen's Berlingo Multispace occupies a utilitarian niche in the people carrier market. Its sliding rear door makes it easy to fit into bay parking spaces, and its durable cabin can withstand more abuse than many upmarket rivals.
However, if the device was exposed to soapy or salt water, it could not work again - even after a new battery and reprogramming. 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 being a part of, rid it of the most water you can by shaking it. Lay it flat with the button facing down and allow it to drain for a couple of minutes while you wipe the inside down with a cloth. This should stop any condensation from causing damage to the 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. This is a security feature within the vehicle to deter thieves from stealing it. If this is the case then you must consult an Citroen dealership or a certified mechanic to fix the problem.
A constant engine warning light could indicate that the electric power-assisted steering is in trouble. If this is the situation, then you should stop the car and check whether the pressure of the oil is not too high and that the temperature is not too high before you start it. If the problem persists then you must visit a Citroen dealership or trained mechanic to resolve the problem.
Dead Battery
A dead battery in the coin is the most frequent reason for your key fob to not function in your Berlingo. The button cell battery in the key is easy to replace, however you should ensure that you select the correct voltage size and type of battery. An uncompatible battery could damage the circuit board. A dead coin battery may also disable the anti-theft system. This is a precautionary measure that stops the engine from being started without a physical key.
If the key fob is still not responding to the lock button despite replacing the battery it could be an issue with the receiver module, which is not communicating with the other modules on your vehicle. An OBDII scanner can diagnose this issue.
If the key fob isn't working, you can try reprogramming the key fob. Follow the steps in the owner's manual for this procedure. It should work fine once it is reprogrammed.
Fault Diagnosis
Citroen Berlingo owners are generally happy with the reliability of their vehicle. As with all vehicles it is possible for faults to occur. One of the most common is a dead battery on the key fob. This is an easy issue to identify and can be fixed in a matter of minutes. Other causes include a worn-out button, water damage on the electronic chip or the signal being distorted, or a remote system receiver module with a fault.
It is important to note that not all key fob batteries are made equal. Some batteries are made from inferior materials that could damage your remote as well as other electronic. Make sure you only use batteries of the same kind and voltage as the original when replacing the battery. Make sure G28 Car Keys 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 alert light on the dashboard of your car that looks like a triangle with an exclamation mark, it signifies that the vehicle has discovered an issue with its electronic power-assisted steering. If the warning light illuminates while driving, it is advised to seek help from a trained mechanic or Citroen Berlingo (incl Multispace) dealership.
Radio Interference
If your key fob isn't functioning at all, it could be a result of radio interference. This is a common problem caused by devices that operate on the same frequency as your remote control. For instance, some wireless security systems, as well as aftermarket LED lights can interfere with radio signals. Try moving these devices into an alternative location if you've got them in your home.
Environmental factors can also interfere with the key fob of automobiles as well as other devices that operate on the same frequency. For instance, metal objects may interfere with the signal's strength. Weather conditions can also bend the antenna of the fob, which results in a weaker radio signal. In some cases the key fob might not be able to respond to radio signals even though it is near to the vehicle.
To ensure that your key fob is healthy, check the battery. It should be in good condition and the contacts should be free of corrosion. A damaged connection is the main reason why the keyfob doesn't respond to radio signals coming from vehicles. A drained battery may cause the fob to malfunction. If you replace the battery, but the problem persists, it is likely that the antenna is defective. Locksmiths can check the keyfob to make repairs.