Dashboard Lights 101
Dashboard Warning Lights are nothing new. This list is the most commonly used symbols used by auto manufacturers.
Check Engine Light
Indicates the engine computer has a set Diagnostic Trouble Code. Usually requires diagnosis from professional.
Battery Charging Alert
Indicates voltage level is below normal and the vehicle's charging system is not functioning properly. Check battery condition, alternator belt or battery terminal.
Coolant Temperature Warning
Indicates temperature has exceeded normal limits. Check coolant level, fan operation, radiator cap, and look for coolant leaks.
Transmission Temperature Alert
Indicates transmission is operating at a higher temperature than is optimal, and transmission fluid is hotter than normal. Check transmission fluid level and engine coolant level.
Oil Pressure Warning
If this light remains lit, it indicates a loss of oil pressure. Immediately check oil level and pressure.
Oil Change Reminder
Indicates that oil has expired. Oil will need to be changed, and the light will need to be reset. The reset procedure is listed in your owner's manual. Some vehicles require the use of special tools to reset the light.
Service Vehicle Soon
Indicates a lighting or other electrical problem. Check all lights! This symbol may also be used to warn a driver of a traction control problem, or a communication problem between modules.
Tire Pressure Monitoring System
Indicates there is a tire with low air pressure or a possible sensor malfunction. Check tire pressure. Some vehicles will allow manual resetting of this light, while others will require a professional.
Brake System
Indicates one of 3 possible conditions: parking brake is on, problem with the braking system/brake fluid is low, or ABS problem. Check brake fluid, and ensure parking brake is fully released. If it's an ABS problem, you will need a professional diagnosis.
ABS Light
Indicates that the Anti-Lock Brake computer has set a code and needs professional diagnosis.
Reduced Power Warning
Indicates Engine Computer has limited power output. There are many levels of reduced power. This will require a professional diagnosis.
Gas Cap Alert
Indicates that the gas cap was not tightened properly. If not addressed, often the Check Engine light will also come on.
Cruise Control
Indicates that cruise control is set.
ESP Fault
Indicated that there is a problem with the Traction Control or Electronic Stability System on your vehicle.
Security Alert
If this symbol lights up momentarily, it may mean that the ignition switch is locked and will need the proper transponder-equipped key to restart. If this symbol is visible when the vehicle is on, it usually indicated a malfunction in the security system.
Lamp Out
Indicated that there is an exterior light on the vehicle that is not functioning properly.
Traction Control or ESP
Illuminates when the vehicle's traction control/anti-skid or electronic stability system is in use. This usually indicated that road conditions are slippery.
Door Ajar
Indicates that a door (including hood or trunk) is not closed. Open and close all doors. If vehicle is left in this condition overnight, it can drain the battery.
Overdrive Light
This symbol indicates that the vehicle's overdrive system has been turned off. This system is typically controlled by an on/off switch.
Airbag Fault
If this light stays illuminated after starting, it is an indication that the vehicle has found a fault in the airbag system and the computer has set a code. Professional repair is highly recommended.
Washer Fluid Reminder
Indicates washer fluid is low. Fill washer fluid reservoir. The cap has a symbol that looks like a windshield. Some vehicles have separate reservoirs for front and rear window washers.
Fog Lamp
Indicates that your vehicle's fog lamps are illuminated.