Why is the reverse camera not displaying after installation in the 2021 RAV4?
3 Answers
The reason the reverse camera is not displaying after installation in the 2021 RAV4 is due to a connection issue between the camera and the central control screen. The reasons why the reverse camera screen does not display are: Poor wiring connection, the reverse trigger wire is not connected, no voltage at the video connector, or a damaged camera. The reverse camera, also known as the parking assist system, reverse visual system, or onboard monitoring system, is widely used in various large, medium, and small vehicles for reversing or driving safety assistance. Modern reverse radar systems have upgraded technology, improved performance, and are applied to various vehicle types, such as trucks, buses, school buses, combine harvesters, corn harvesters, coaches, and construction machinery. Whether in terms of structure and appearance or performance, they each have unique characteristics. The most commonly used displays are digital displays, screen displays, and multifunctional reverse mirror displays. What is a reverse camera: The reverse camera is a device used in various large, medium, and small vehicles for reversing or driving safety assistance, also known as the parking assist system, reverse visual system, or onboard monitoring system. This system provides a clear and intuitive view of the rear when reversing, making it one of the most practical configurations for reversing safety. When the reverse gear is engaged, the system automatically activates the high-definition reverse camera located at the rear of the vehicle, displaying the rear view clearly on the LCD screen, allowing for accurate assessment of the rear road conditions. Even at night, it provides a clear view through infrared. The automotive reverse camera is a comprehensive system that can also be added to the vehicle by installing a camera device and an onboard display.
I often encounter issues with the installed reversing camera not displaying. Here's how to troubleshoot it step by step. First, check if the camera is installed in the correct position—for example, near the license plate frame, ensuring it's not blocked by the license plate or angled too downward, which could affect visibility. Next, inspect the wiring connections. The camera's power wire is typically connected to the reversing light's positive wire. Poor grounding or insufficient stripping of the insulation during wiring can lead to unstable power supply. Pay special attention to the signal wire as well; the video input plug at the back of the head unit might not be securely fastened, causing it to loosen easily. Also, consider the fuse issue—modifications might accidentally affect other fuses in the vehicle. Check the fuse box on the driver's side for a 10-amp fuse related to the reversing system. Finally, test the screen's response in different gear positions. If it doesn't display only when in reverse, the system might not be triggered, or the reversing camera switch might be hidden in the head unit settings and needs to be enabled. If all else fails, it's advisable to have the modification shop recheck the setup, as new equipment might have compatibility issues.
My RAV4 also encountered a similar situation before. Let me share my troubleshooting experience. First, don't panic. Open the trunk lid to check if the camera body is securely fixed. Aftermarket devices are most vulnerable to internal solder joint fractures caused by bumps. Then test whether the reverse lights illuminate properly - if they work, it means the trigger signal is fine; otherwise, check the circuit. Next, browse through the central control settings menu to see if there's an option to enable the reversing camera (some Toyota infotainment systems require manual activation of this feature). If the screen is black but you can hear the parking sensor beeps, it might be a video signal cable issue - try firmly squeezing the connection points of the long cable running from the rear to the dashboard. If that doesn't work, reboot the infotainment system by holding the power button for ten seconds to perform a complete power reset. Remember to check your aftermarket device model - some universal cameras aren't compatible with 2021 model infotainment systems, so consider switching to a dedicated decoder camera kit. Focus your inspection on the signal transmission components, as loose wiring harness connectors account for over half of such failures.
