What are the reasons for the car speedometer not working?

[DelaneyMarie]

The reasons for the car speedometer not working are: 1. The plug is not securely connected; 2. There is a circuit break. The meanings of the exclamation marks on the car speedometer are: 1. A circular exclamation mark indicates the brake system fault light; 2. A parenthesis exclamation mark indicates the tire pressure warning light; 3. A yellow triangle exclamation mark indicates the traction control fault light; 4. A yellow gear dashboard with a circle exclamation mark indicates the automatic transmission fault warning light. The warning lights on the car dashboard that must be checked include: 1. Tire pressure warning light: This light turns on when there is an issue with tire pressure; 2. ABS indicator light: Indicates a fault in the anti-lock braking system and must be checked promptly; 3. Engine fault indicator light: Reflects the working status of the engine, usually yellow or red. If the engine fault light stays on, the engine condition should be inspected immediately; 4. Battery indicator light: Normally, the battery light turns off when the car starts. If the battery light stays on, it indicates a battery issue that should be repaired promptly.