Accelerator Pedal Linkage - The linkage between the accelerator pedal and a vehicles throttle body or carburetor.
Acquisition Fee - For a vehicle lease, a fee charged by the leasing company at the inception of the lease that is intended to cover a variety of administrative costs, such as obtaining a credit report, verifying insurance coverage, checking the accuracy and completeness of the lease documentation, and entering the lease into its data and accounting systems. Also referred to as an "Assignment" fee or "Bank" fee.
Active Pedestrian Protection System - An electronic system designed to warn drivers of impending pedestrian traffic.
Actual Cash Value (ACV) - A method of valuing insured property that is computed by subtracting depreciation (based on the propertys age and condition) from its replacement cost.
Adaptive Cruise Control - A laser- or radar-sensing cruise control system that causes a vehicle to automatically slow or stop in order to avoid front-end collisions.
Advanced Technology-Partial Zero Emission Vehicle (AT-PZEV) - An emissions standard that meets PZEV requirements and has additional zero-emissions characteristics, such as operation by natural gas or hybrid vehicle batteries.
Aerodynamic Drag - For a moving vehicle, the force exerted by the flowfield of air moving in the opposite direction.
Aftermarket Accessory - An accessory or piece of equipment that is not included in the vehicle as manufactured, but is purchased and installed at the dealership or other automotive establishments.
Air Conditioning - The cooling and dehumidification of a vehicles cabin air.
Air Conditioner Refrigerant - The liquid used in air conditioning systems, which has the property of boiling at ambient air temperatures. Air Conditioning (A/C) Compressor - An engine-driven pump in the air conditioning system that increases the pressure of the refrigerant.
Air Conditioning (A/C) Drain Hose - A hose used to drain condensation from the air conditioner evaporator.
Air conditioning Filter - A device that removes contaminants from external air entering the ventilation system.
Air Dam - A front spoiler intended to divert air from traveling underneath the car. Air dams can improve aerodynamics, reduce lift, and increase the airflow through the front radiator.
Air Filter - A device that filters incoming air fed to the engine.
Air Filter Restriction Indicator - A device that identifies an impedance to the air filter system.
Air Filtration - The removal of solid particulates (such as dust, pollen, mold and bacteria) from a vehicles cabin air by a filter placed in the ventilation system.
Air Pollution Score - A score from zero to ten given by the EPA to each new vehicle that represents the amount of air pollutants produced during a laboratory driving simulation of the vehicle.
Air Pump Filter - A device that eliminates contaminants from the air supply fed to the air injection system.
Airbag - 1) A type of adjustable suspension that contains rubber bags that are inflated and deflated with an onboard air compressor to raise or lower the vehicle's ride height. 2) A cushion that deploys and fills with air when a major impact occurs to reduce a vehicle occupants chances of coming in contact with the vehicles interior surfaces.
All Weather - A term for a 1920's four door convertible sedan.
All-Wheel Drive (AWD) - A drivetrain that employs a front, rear and center differential to provide power to all four wheels of a vehicle.
Angle Of Approach - The steepest angle of inclined roadway onto which a vehicle can be driven from a level roadway without the vehicles forward overhang making contact with the inclined surface.
Annual Percentage Rate (APR) - The cost of credit (the interest rate) expressed as a yearly rate.
Antenna Type - The type of antennas used in vehicle audio systems and navigation systems: mast, power telescoping, element and diversity.
Antifreeze - A mixture of water and ethylene glycol that has both a higher boiling point and a lower freezing point than plain water. Also refered to as "Coolant."
Antilock Brake System (ABS) - A computer-controlled system that prevents brakes from locking up and tires from skidding during hard braking.
Antilock Brake System High Pressure Hose - The reinforced hose or hoses (with metal fittings at either end) that carry high pressure hydraulic fluid used in an antilock brake system.
Antique - Describes the earliest vehicles, generally those built from the beginning up to 1920 or prior to World War I. Other definitions are cars 100 years old or older.
Anti-Theft - A device or system of devices that aid in preventing a vehicle from being stolen.
Anti-Theft Alarm - A device that uses an auditory signal and/or telemetric to alert a vehicles owner of an attempted theft.
Anti-Theft Codes - A four- to six-digit numerical key necessary to return functionality to a vehicles audio head unit after it has been removed or disconnected from the battery.
Anti-Theft Immobilizer - An electronic device that works together with a key (that includes a small transmitter) and that prevents the engine from starting when the key is not present.
Anti-Theft Remote Control - An electronic device that unlocks a vehicles doors and, in some cases, opens its trunk, rolls down its windows and opens and closes its sunroof.
A-Pillar - The front-most pair of structural posts supporting the roof and windshield.
Asking Price - The price for a vehicle asked (before any negotiations) by the dealer or other seller.
Assignment Fee - For a vehicle lease, a fee charged by the leasing company at the inception of the lease that is intended to cover a variety of administrative costs, such as obtaining a credit report, verifying insurance coverage, checking the accuracy and completeness of the lease documentation, and entering the lease into its data and accounting systems. Also referred to as an "Administration" fee.
Audio Format - The format of digital compression readable by a vehicles audio system, such as WMA, MP3, WAV, SACD or AAC.
Audio Remote Control - A wireless device that uses infrared or radio waves to control a vehicles sound system.
Auto Dimming Rearview Mirror - A rearview mirror that automatically dims at night when it detects a bright glare. Also referred to "Electrochromatic rearview mirror."
Auto Shift Lock/Starter Safety Switch - A device that prevents the starter from functioning unless the shifter is in the park or neutral position, and prevents the shifter from being moved unless the brake pedal is depressed.
Automated Manual Transmission - A conventional clutch-type manual transmission that employs electronic, pneumatic and/or hydraulic actuators in place of a conventional clutch pedal, and a purely mechanical shift lever. The driver may select either fully automatic shift mode or driver-controlled shift mode. Also referred to as "DSG," "direct shift gearbox," "SMG" and "sequential manual gearbox."
Automatic Door Unlock - A device that automatically unlocks a vehicles doors after a collision.
Automatic Torque Transfer System (ATTS) - Hondas Automatic Torque Transfer System, which is a system that distributes an engines torque output proportionately between the driven axles (so that the output is most effectively used).
Automatic Torque Transfer System (ATTS) Unit Fluid - Hydraulic fluid used in Hondas Automatic Torque Transfer System.
Automatic Transaxle - A combination transmission and differential/drive axle assembly.
Automatic Transaxle Pressure Filter - The external filter on an automatic transmission.
Automatic Transmission - A transmission that uses a torque converter, planetary gearset and clutches or bands to automatically change a vehicles gears.
Automatic Transmission Bands - In an automatic transmission, adjustable circular straps lined with a friction material that are actuated to tighten around and stop the rotation of a drum as part of the shifting process.
Automatic Transmission Cooler Hoses - Flexible tubes that carry transmission fluid to and from a heat exchanger or oil cooler.
Automatic Transmission Filter - A component in most automatic transmissions that is fitted over the fluid intake, usually in the pan, that prevents debris and other contaminants from circulating throughout the transmissions inner workings and potentially causing unnecessary wear or damage. Some transmissions use a reusable metal or nylon mesh-type screen in place of a disposable filter.
Automatic Transmission Fluid - The fluid used for lubricating and cooling an automatic transmission.
Auxiliary Features - Factory-installed, optional parts that supplement similar existing systems, such as a transmission cooler, engine cooler or a secondary gas tank, that are typically available on trucks and SUVs.
Auxiliary Input (Audio) - A method of connecting a peripheral media player to a vehicles entertainment system, either wired (for example, through an RCA jack, a USB port or a 1/8" TRS plug), or wirelessly (for example, through Bluetooth, A2DP or infrared).
Auxiliary Lighting - A halogen lamp or light-emitting diode (LED) that is used to illuminate a specific region or part of a vehicle (such as the glove box or footwell) and is not located in the vehicles headliner.
Awareness Aids - Electronic devices designed to keep a driver awake and alert while driving a vehicle.
Axle Drive Fluid - The liquid used for lubricating gears inside the axle.
Axle Ratio - The number of revolutions a vehicles driveshaft makes for each revolution of the vehicles drive axle(s).