What is the reason for the Languang display screen not lighting up but the reverse light working?

[VonMakayla]

The reason for the Languang display screen not lighting up but the reverse light working may be due to poor electrical contact in the car. Below is a detailed introduction about the Languang car: 1. Overview: The Languang is a global model of Hyundai Motor that was first launched overseas. The brand is Hyundai Motor. The drive method is front-engine, front-wheel drive. The body structure is a monocoque. The car body style is a sedan. The intake method is naturally aspirated. 2. Others: It is equipped with a 1.6L Gamma engine and a 1.8L Nu engine, with improved engine technology. The multifunction buttons on the steering wheel are quite abundant, integrating audio, cruise control, Bluetooth phone, and other buttons. In terms of body dimensions, the basic specifications of the Languang are 4570×1775×1445 (mm).

[Edgar]

I've been driving for over a decade and encountered similar issues, like the display screen only lighting up during reverse gear. This is mostly caused by aging wiring or control module failure, where the reverse camera signal forcibly activates the screen while power gets cut off during normal operation. Last time my car had this problem, I first checked the fuse location (lower left corner of the engine compartment) to see if it was blown, then tried replacing it with a new one. If that doesn't work, it might be due to loose connectors behind the screen - you'll need to disassemble and tighten them (recommend getting a friend to help avoid messing up the wiring harness). Leaving this unresolved long-term affects reversing safety, so get it fixed promptly. Don't delay to save money - just spend a few hundred at the 4S shop to ensure foolproof repair.

[DiPreston]

I'm someone who loves tinkering with cars and often does my own repairs. I've encountered situations where the central control screen malfunctions—it goes black normally but lights up when reversing. Generally, the causes are simple: first, check the fuse related to the screen in the fuse box. If it's blown, replace it with a new one. If the screen lights up, it proves that the circuit protection was triggered. If it's not the fuse, check if the screen connector is loose. Unplugging and replugging it a few times can reset it. Sometimes, too much dust buildup causes poor contact or the software crashes, and simply restarting the vehicle can fix it. This avoids professional repair costs, but safety comes first—don't tamper with high-voltage components to avoid the risk of electric shock. For daily maintenance, use a soft cloth to clean the screen and prevent dust, which can reduce the occurrence of such issues.

[VonSebastian]

It is normal for the display to light up when reversing and then turn off, usually due to a bug in the car's electronic system. The reverse signal prioritizes waking up the screen, but a main power circuit break or software conflict may cause this issue. It is recommended to use an OBD scanner to check for error codes for quick diagnosis. Updating the system firmware can sometimes fix the problem without needing professional help, saving time and preventing minor issues from turning into major ones.