What does a square with an 'i' inside indicate as a fault?

[VonKevin]

A square with an 'i' in the middle is the information indicator light. Generally, when this light illuminates, it indicates that there is some information the vehicle owner needs to check. A square with an 'i' could signify issues such as a maintenance reminder, insufficient brake fluid, or excessive brake pad wear. Maintenance Reminder: Vehicle maintenance follows a certain cycle, and when the maintenance period is due, the indicator light will illuminate to remind the owner to proceed with maintenance. Insufficient Brake Fluid: Brake fluid is the liquid medium that transmits braking pressure in a hydraulic braking system, used in vehicles equipped with hydraulic braking systems. Also known as brake oil or force fluid, it is an essential part of the braking system, serving as a force-transmitting medium. When the brake fluid level is too low, the indicator light will illuminate to remind the owner to add more brake fluid. Excessive Brake Pad Wear: Brake pads wear out over time with use. When the wear reaches a certain level, the indicator light will illuminate to remind the owner to replace them, ensuring driving safety.

[OwenLynn]

This square icon with an 'i' is actually a vehicle information indicator light, just like a notification icon on your phone. The last time it suddenly lit up on the highway, it gave me a scare. I pulled over only to find out it was just a maintenance reminder. There are many common scenarios: it could be a door not properly closed, abnormal tire pressure, windshield washer fluid running low, or the system reminding you of routine maintenance. It's best to immediately check the prompt text on the dashboard or center console screen. Usually, the system will automatically display specific information after driving a few hundred meters. If it's a yellow light, you can check it when you have time. But if it's a flashing red light, don't continue driving—get the trouble codes read right away.

[LoganAnn]

This indicator serves as a sticky note reminder function for your car. My old Mercedes has lit up three times, indicating an unsecured trunk lid, insufficient engine oil life, and low washer fluid respectively. Simply observe the specific prompt displayed on the instrument cluster screen – the system automatically shows the fault name. You can first check if all doors are properly closed, inspect the trunk latch for leaf obstructions, and examine the washer fluid reservoir level (blue cap under the hood). If it shows a maintenance reminder, remember to change the oil when due. For warnings like insufficient brake fluid, address them promptly. Only visit a repair shop for diagnostic computer scanning if you absolutely can't identify the cause.

[Melissa]

A square with an 'i' on the dashboard indicates that the vehicle is sending you a notification. There are seven common scenarios: a wrench icon appears when the maintenance cycle is due, a tire pressure symbol pops up for a flat tire, and a washer fluid symbol prompts for low windshield washer fluid. Some high-end vehicles may also display rare issues like automatic headlight washer malfunction or night vision system abnormalities. I recommend developing the habit of checking the dashboard at startup. Turn the key to the accessory position without igniting the engine, and all warning lights will perform a self-check. This is when you can most clearly see the specific warning messages.