Mercury Mariner won't start despite having power and attempting to turn over on Mercury Mariner

Some Mercury Mariner owners report experiencing starting issues despite having power and attempts to turn over the engine. Commonly, these issues are attributed to a bad battery, which may not provide sufficient voltage to crank the engine, often indicated by dim interior lighting. Additionally, a failed starter can prevent the vehicle from starting if it is not functioning correctly. Ignition problems may also cause the engine to crank without starting due to a lack of spark. Some owners find that the safety switch, which ensures the vehicle starts only in neutral, can malfunction, allowing power to circuits but not to the starter motor. Fuel supply issues are another concern, as insufficient fuel entering the combustion chamber can lead to cranking without starting. Lastly, problems within the electrical system, including faulty connections or fuses, can contribute to these starting difficulties. It is advisable for owners facing these issues to thoroughly check these potential causes to effectively diagnose and resolve the problem.