What should you do if the parking brake indicator light is illuminated?

When the parking brake indicator light is illuminated, it signifies that the parking brake is engaged or there may be an issue related to the parking brake system. Releasing the parking brake is the appropriate action to take in this situation. Doing so will typically turn off the indicator light, confirming that the parking brake is no longer engaged and the vehicle is prepared for operation.

Other options do not address the primary issue indicated by the warning light. Checking engine oil, engaging the parking brake, or inspecting the brake fluid level are actions that do not directly resolve the cause of the illuminated indicator light, which specifically relates to the state of the parking brake itself.