look for the problem in the ignition switch.
On a 2008 Ford Mustang : That is the ( LOW TIRE PRESSURE ) warning light * located below your tachometer
The light means that there is an alternator issue
If the " BRAKE " warning light comes on in your dash either the BRAKE FLUID LEVEL IS LOW in the brake fluid reservoir located in the engine compartment of your 1995 Ford Mustang or the parking / emergency brake is engaged
If the warning lights go off in a Chevy Tahoe, it indicates a problem. In order to reset these lights the problem must be solved.
The emissions warning light refers to a problem with the exhaust system. The most common problem with the exhaust system is a plugged catalytic converter.
You could have an electrical problem that causes the warning to not trigger. If you are using a copied key, it may not register with the warning system.
It is important to pay attention to the warning lights on the dashboard. The Battery warning light turns on when there the battery of a car is having a problem.
The warning light is on because there is a problem with the system. Until the problem is fixed the light will remain on and the system will not operate if needed. Once the problem is fixed the light will reset itself.
Problem with transmission
There is no reset for the battery (charging system) warning light. It is on because there is a problem. Once you repair the problem the light will go out. More than likely the alternator has failed.
A warning letter to an employee would probably be a recap of a conversation you had regarding this problem. Restate what was said or state the reason for the warning and what is expected of the employee that isn't being met. Outline the time the employee has to correct the problem and what will happen and when if they don't change.
By having a professional repair the problem that has set the warning light in the first place.