The reversing radar installed on Citroen Berlingo turns out to be really practical to help you park easily ou retreat without hitting another vehicle and of course if someone crosses when backing up. The concern is that this one can deteriorate et ring for no reason or stop working. Even if you can still drive with your Citroen Berlingo, in both cases it is rather inconvenient. This is why in this article we will show you how to fix your reversing radar problem. To do this, we will help you to study your concern on your Citroen Berlingo. Then depending on what you have discovered we will give you tips so that you can réparer .

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Analyze a problem with reversing radar on Citroen Berlingo:

The operation of the reversing radar:

The reversing radar is activated when you engage the reverse of your Citroen Berlingo. This one goes ring as soon as you approach something behind your car. Generally intensity the signal will increase as the distance decreases so as to intensify the alert. In this way the audible signal begins approximately 1 m from your vehicle and will become continuous at 5 cm.

It works using sensors, usually 4, located on the rear bumper of your car. Note that generally the sensors are located at a height of 50 cm from the ground on the bumper, to be able to measure the appropriate distance to ring. These sensors will measure the distance between your car and an external element, such as a wall or another vehicle. In order to calculate this the catches project ultrasonic (ultrasonic waves) which when they reach the object will send back an echo. Sensors will time the reception time of the ultrasound echo in order to calculate the distance . Then they will send this data to a electronic control unit by electrical connections. The control unit will recover the data and send an audible signal to the driver to help him estimate the distance left behind the vehicle. Small warning, a reversing radar should not replace the controls in the mirrors.

Faults related to the reversing radar:

In the same way as explained above, the reversing radar works with the help of sensors arranged at the rear of your vehicle, so generally breakdowns will be linked to them. Indeed when you had little ones clashes in the back of your car, it is possible that this has moved the sensors, thus distorting the calculation of the radar. In this case, it is possible that the reversing radar no longer send sound because a sensor is damaged or you have an irregular sound signal.

Another possibility is that the sensors are clogged with impurities like mud, leaves ... which do not allow the diffusion of ultrasound. In this case you will have the continuous audible signal as soon as you engage reverse gear.

Another possibility, even if it is less frequent, is that you have a problem with the rear contactor . In other words the devices do not engage when you put the reverse gear. In this case the reversing lights will also remain off.

Finally as it is an electric circuit, it is always possible that the fuse reversing radar has blown. You can take the time to check, using your Citroen Berlingo's logbook, however be aware that this is much less common.

How to fix a backup radar problem on Citroen Berlingo?

First of all, before a repair on your Citroen Berlingo, we advise you to start with nettoyer the bumper of your car since it is possible that dirt is preventing the transmission of ultrasound. Sometimes this will fix your problem quite quickly.

Then when this has not solved your problem, you must start by checking the sensors. So it will take find the sensor that no longer works. For this we advise you to put the reverse gear of your car, but also to put the hand brake. Locate the sensors located on the rear bumper of your car and bring a coin closer. In case the ultrasonic waves work you will hear a small sizzle otherwise if you do not hear anything, then it means the sensor is no longer working. Perform the test on each sensor so as to identify the one that no longer works. When you have identified the damaged sensor, try to reposition it on its support so that it returns to its initial position.

When this doesn't work you will have to remove the bumper of your Citroen Berlingo by removing a few screws, disconnecting the sensor connector and replacing the faulty sensor.

If you wish to make repairs to a mechanic approximately between 200 and 300 euros .

To conclude: a backup radar problem could happen quickly. Indeed the sensors are rather sensitive and at the slightest scratch it could move them and distort the calculation. However, motorists often do not finding when they have a collision, however be aware that even if it is not visible, it is possible that you have internal problems that cost you dearly at the reparation .

If you ever want to go a little further in the maintenance of your Citroen Berlingo, you can consult our other articles on Citroen Berlingo.