Reversing camera or parking sensors not working – the most common faults and troubleshooting

The reversing camera or parking sensors will not work if the image remains dark, an error message appears on the display, or there is no audible warning at all. Parking sensors measure obstacles near the bumper and inform the driver of the distance, whilst the reversing camera shows the area behind the car. These are driver-assistance systems, so it is advisable to check your surroundings yourself as well. Traficom describes how parking aids work.

If the reversing camera or parking sensors are not working, start with the visible areas

The parking aid may not work properly if the camera lens or the sensor in the bumper is covered in mud, snow, ice or road salt. Gently clean the surface with a soft cloth and check that there is no tape, wax or other covering on the sensor. If the camera displays a blurred image only when it is raining or after washing, moisture may be affecting the connections or the camera unit.

Also identify the exact nature of the fault. Does the system only work intermittently, is the image missing entirely, or does the car display a fault message for the parking aid? For example, a knock to the bumper may have damaged an individual sensor or its mounting. If the problem started after a repair, bumper work or a battery change, please let us know. This background information will help us narrow down the fault.

It is advisable to diagnose and pinpoint the fault in the parking aid before replacing any parts.

The reversing camera or parking sensors are also not working due to an electrical fault

The camera, sensors, wiring and control units form a single system. A broken cable, a corroded connector, poor earthing or an electrical fault in the system may manifest as a blank camera image, intermittent operation or a warning message. It is not advisable to diagnose a fault based on a single symptom alone, as the same symptom can be caused by several different points in the system.

We do fault diagnostics and automotive electrical work for all car makes. We read fault codes, but we do not replace parts based on the code alone. A fault code often indicates what anomaly the control unit has detected. Measurements, checks on connections and, where necessary, functional testing will indicate where the repair is needed.

Diagnostics identify the fault without any guesswork

Book a diagnostic check if cleaning does not restore functionality, the system triggers repeated alarms, or the camera and radars stop working at the same time. Before your visit, make a note of when the fault occurs. Does dry weather help? Does the fault occur after engaging reverse gear, and does a message appear on the display? Observations such as these will help to narrow down the fault more quickly.

We also serve customers from Siuntio, Espoo and Veikkola at our Kirkkonummi branch. We can carry out an inspection as part of the parking assistance service repair services, whether the issue concerns a sensor, a camera, the wiring or any other electrical fault. We’ll provide you with a clear assessment of what our investigations have revealed and what repairs are required.