Reversing radar problem on Citroen C4 Aircross?

Published by Asacans | February 25, 2022 | Citroen C4 Aircross | 0 |

The reversing radar installed on the Citroen C4 Aircross proves to be very practical in allowing you to simply park but also retreat without crashing into another car and of course in the event that someone passes when you are backing up. The problem is that this one sometimes goes deteriorate et ring for no reason or stop working. Even if you can still drive with your Citroen C4 Aircross, in both situations it is quite inconvenient. This is the reason why in this article we are going to help you fix your reversing camera problem. To do this, we will first help you to analyze your problem radar on your Citroen C4 Aircross. So depending on what you have discovered we will give you tips on how to réparer .

Analyze a backup radar problem on Citroen C4 Aircross:

The operation of the reversing radar:

The reversing radar is activated as soon as you engage the reverse of your Citroen C4 Aircross. The latter goes ring when you approach something behind your car. Generally intensity of the signal accelerates as the distance decreases so as to intensify the alert. In this way the sound signal starts approximately 1 m from your car and will become continuous at 5 cm.

This is made possible thanks to sensors, on average four, placed on the rear bumper of your car. Note that the sensors are generally located at a height of 50 cm from the ground on the bumper, in order to assess the correct distance to ring. These sensors should measure the distance between your car and an outside object, such as a wall or another vehicle. In order to calculate this the captures project ultrasonic (ultrasonic waves) which when they reach the external element will send back an echo. Sensors will time the reception time of the ultrasound echo in order to calculate the distance . After that they will send this data to a electronic control unit by electrical connections. The central will receive the information and send an audible signal to the driver to allow him to estimate the distance he has behind the vehicle. Small warning, a reversing radar should not replace checking the mirrors.

Faults related to the reversing radar:

As previously stated, the reversing radar operates thanks to sensors arranged behind your car, so generally breakdowns will be due to these. Indeed if you have had children shock in the back of your car, it is possible that this has displaced the sensors, thus distorting the calculation of the radar. If this is your case, it is likely that the reversing radar no longer beeps because a sensor is damaged or you have an irregular sound signal.

Another possibility is that the sensors are clogged with impurities for example mud, plants… which do not allow the dispersion of ultrasound. In this case you will have the continuous audible signal when you engage reverse gear.

Another possibility, although less common, is that you have a problem with your rear contactor . That is to say that the mechanisms do not activate when you put the reverse gear. In this case the reverse lights will also remain off.

Finally, given that it is an electrical circuit, it is often possible that the fuse reversing radar has burned out. You can spend some time checking it, using the booklet for your Citroen C4 Aircross, but be aware that this is really less frequent.

Some techniques to repair a reversing radar problem on Citroen C4 Aircross?

First of all, before a repair on your Citroen C4 Aircross, we recommend that you start with nettoyer the bumper of your car since it is possible that dirt prevents the transmission of ultrasound. That might fix your problem pretty quickly.

Then if that did not solve your problem, you must start by checking the sensors. So you will have to find the faulty sensor. To do this, we suggest that you put your car in reverse, without forgetting to put the handbrake on. Locate the sensors located on the rear bumper of your car and bring a coin closer. If the ultrasonic waves are working you will hear a small sizzle otherwise if you don’t hear anything, it means that the sensor is no longer working. Perform the test on each sensor so as to identify the one that no longer works. Once you have located the faulty sensor, try to reposition it in its base so that it returns to its original location.

When this doesn’t work you will have to remove the bumper of your Citroen C4 Aircross by unscrewing a few screws, disconnect the sensor connector and replace the faulty sensor.

When you plan to make repairs to a mechanic you will need to plan approximately between 200 and 300 euros .

To finish: a reversing radar problem could quickly occur. Indeed the sensors are quite sensitive and at the slightest scratch it could move them and distort the calculation. It therefore happens regularly to drivers not to do finding when you have an accident, but be aware that although shocks are not visible, it is likely that you will have internal problems which will cost you dearly at the reparation .

If you want to discover other guides on the Citroen C4 Aircross, do not hesitate to consult our other pages on the Citroen C4 Aircross.