Vehicles have many warning indicators, and many of their meanings may not be immediately clear. Fortunately, many of the symbols are easy to understand. While some indicators need professional attention, others can be handled at home.

Check Engine

There are many reasons the Check Engine warning indicator can turn on. In some cases, fixing the problem can be as simple as replacing a spark plug or tightening the gas cap. Other causes could be more serious and damage the engine over time.

If the Mass Airflow Sensor is damaged or malfunctioning, the spark plugs, oxygen sensors and catalytic converter can suffer as well. If the catalytic converter is the problem, vehicles may fail to pass an emissions test and the engine will heat up quicker. A faulty oxygen sensor can result in worse fuel economy and potentially damage other parts of the engine.


The Battery warning indicator looks almost exactly how you would expect. Most cars have an enclosed box with a negative sign on the left and a plus sign on the right to signify the battery. When this warning light flicks on, it means the voltage level is below normal and the charging system isn't performing its job properly.

Generally, you can fix this issue by checking the battery terminals and tightening the connections. If that doesn't fix the problem, check the alternator belt and battery condition.

Oil pressure

A loss of oil pressure will trigger an indicator that looks similar to a gravy boat or kettle. This light means that the oil pressure is low. You can quickly check if this is the case by inspecting the oil level and pressure.

Oil change

Sometimes a warning indicator is just a warning. The Oil Change Light is exactly that. When this indicator turns on, it means the vehicle has either hit a certain time period or mileage. Instructions for resetting the indicator can often be found in the owner's manual.

Coolant Temperature

The Coolant Temperature warning indicator turns on when the coolant's temperature rises too high. Drivers with some knowledge might be able to fix the problem themselves. Check the coolant level and refill it if it's low. Next, take a look at the fan and radiator cap. Finally, inspect the coolant for leaks.

When you need help with your vehicle indicator lights, call and schedule an appointment with our service department at Midwest Superstore.

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