
If the Mercedes dashboard doesn't light up, there is a switch on the right side of the center armrest controller. Press the switch to turn on the dashboard lights. Reasons why the display doesn't light up: Poor contact issue. If the dashboard only lights up when the car is started, it indicates that the instantaneous current is high enough to light it up temporarily before it goes off again. This suggests poor contact in the DVD player or a circuit problem. Solutions: First, check whether the display's power supply is normal. If the power supply is abnormal, replace the power supply module. Then, check whether the cable connection is good. If there is a problem, replace the cable. Next, check whether the display is damaged by replacing it for testing. If the display works normally after replacement, it means the original display was damaged. If the issue persists, and both the power supply and cable connection are normal, check the video output signal of the motherboard and replace the motherboard for testing.

With over a decade of experience in car repairs, I've dealt with numerous Mercedes dashboard lighting issues. Always start with the simplest solution first—check the brightness adjustment knob located near the dashboard or on the left side of the steering wheel. Try rotating or pressing it, as sometimes the setting is just turned too low. If there's no response, don't panic. Next, inspect the fuse box, typically found near the driver's footwell or inside the passenger glove compartment. Refer to the Mercedes manual for diagrams and replace the corresponding dashboard fuse. If the issue persists after replacement, it might indicate a faulty lighting module or power wiring problem. In such cases, safely park the vehicle, turn off the engine, and call for professional assistance. Driving at night without clear visibility of the speedometer is extremely hazardous—never take it lightly.

I've been driving a Mercedes-Benz E-Class for several years and once experienced a sudden blackout of the dashboard, which was really scary. I remember there was a small knob below the dashboard, but twisting it hard didn't help. Later, I found out the fuse was blown. A friend taught me to open the fuse box under the driver's seat and replace it with a new fuse, which solved the problem. If the button doesn't move, don't poke it randomly. The Mercedes owner's manual clearly marks the location. First, check the fuse box—it's usually an easy fix by replacing the component. Older models' buttons tend to get stuck, but newer Mercedes have digital dashboards where you can adjust brightness through the central control menu. In short, pressing the brightness button is the first step. If that doesn't work, don't force it to avoid causing issues with other systems.

When the Mercedes dashboard does not light up, first turn on the hazard warning lights to alert the vehicles behind, then safely pull over. Try pressing the brightness adjustment button near the dashboard or restart the vehicle. If it doesn't work, it might be a blown fuse—check the manual to locate the fuse and replace it promptly. Stay calm, as driving safety is the top priority. Without the dashboard, it's difficult to judge speed, fuel level, etc. In case of an emergency, immediately seek help from a roadside repair shop or call for assistance without delay.


