Piston Ridge Team The maintenance schedule owner manual section is the part of your vehicle’s handbook that lists every routine service, when it is due, and what each task involves. It is usually found near the back of the manual or in a separate maintenance and warranty booklet. These pages can look intimidating, with dense charts, symbols, footnotes, … Read more
The parking brake warning light tells you that the parking brake is applied or, on many newer cars, that the parking brake system has a fault. On many vehicles it appears as the letter P inside a circle or the word BRAKE, and it is typically red when the brake is engaged. Most of the … Read more
Mechanical efficiency basics explain how effectively an engine converts the power produced inside its cylinders into usable power at the crankshaft. Some power is always lost to friction and the operation of engine accessories, so the output available to move a vehicle is lower than the power generated within the engine. Understanding this difference helps … Read more
Normal driving conditions, in maintenance language, describe a fairly specific pattern of use that many owners assume they meet without checking. The phrase sounds like a description of everyday life, yet manufacturers use it as a technical label tied to a particular service schedule. This article explains what the normal schedule assumes about your driving, … Read more
Thermal efficiency basics explain how effectively an engine converts the energy in fuel into useful mechanical work. Since no engine can use all its fuel energy to move a vehicle, understanding where energy goes helps clarify both engine performance and fuel economy. The difference between ideal and real-world efficiency depends on factors such as engine … Read more
The trunk ajar warning light tells you the vehicle has detected that the trunk lid, hatch or liftgate is not fully latched. On many cars the symbol shows the rear of a vehicle with the trunk lid raised, though some vehicles combine it with the door warnings in a single top-down graphic. An open trunk … Read more
Severe driving conditions are the situations your owner’s manual singles out as harder on a vehicle than ordinary commuting, and they often call for a separate, more frequent maintenance schedule. Many drivers assume the label applies only to off-road trucks or race cars, but the definition is usually much broader. This guide explains how manufacturers … Read more
Permanent trouble codes are protected copies of confirmed emissions faults that your car’s computer keeps even after someone clears codes with a scan tool. They exist so that a fault cannot simply be erased and forgotten, and they disappear only when the vehicle proves to itself that the problem is gone. Many owners first meet … Read more
Volumetric efficiency basics explain how effectively an engine draws air into its cylinders compared with the amount those cylinders could theoretically hold. Because combustion depends on the air available to mix with fuel, cylinder filling has a direct influence on engine performance. A naturally aspirated engine, for example, may fill its cylinders differently as engine … Read more
The hood ajar warning light means the vehicle has detected that the hood, the panel covering the engine bay, is not fully latched. On many vehicles the symbol shows a car profile with the front panel raised, and some cars also display a text message or sound a chime when you start driving. Not every … Read more