QUESTION = Why every car I've driven only has the defrost option set to "defrost the windshield" or "defrost the windshield and blow on feet."

GENERATION = > Saving on power It's more important to save on power. Your engine is constantly revving, and the more power it gets, the more likely it is to damage itself. If you're only going to run it for a short time, then the wipers are there to reduce the amount of power it's getting. If you're going to run it for an extended period of time, then the wipers are there to prevent damage to the engine. If you're going to run it for a long time, then the wipers are there to prevent damage to the engine. The power saving feature is only there for people who don't need to regularly defrost their car. If you're driving a car that doesn't need to defrost it often, you don't need to put it on the defrost button. If you're going to drive a car that does need to defrost, then you're going to put it on the defrost button. If you're going to drive a car that doesn't need to defrost often, then you're going to put it on the defrost button. 

RETRIEVAL #0 = Power window---be accidentally triggered by a child climbing to place his or her head out of the window. To prevent this, many vehicles feature a driver-controlled lockout switch, preventing rear-seat passengers (usually smaller children) from accidentally triggering the switches. This also prevents children from playing with them and pets riding with their heads out windows from activating the power window switch. Starting with the 2008 model year, U.S. government regulations required automakers to install safety mechanisms to improve child safety. However, the rules do not prevent all potential injuries to a hand, finger, or even a child's head, if someone deliberately holds the switch when the window is closing. In 2009, the U.S. auto safety administration tentatively decided against requiring all cars to have automatic reversing power windows if they sense an obstruction while closing. Proposed requirements concern automatic ("one-touch up") window systems, but most vehicles with this feature already have automatic-reversing. The federal government made a written contract that all automakers should make the lever switches (as opposed to the rocker and toggle switches) standard on all new vehicles by 1 October 2010. Section::::External links. BULLET::::- Power Windows Are Perilous (CBS News) BULLET::::- Fixing Power Windows BULLET::::- Nice, Karim. " 

RETRIEVAL #1 = Nissan Leaf---includes digital warning sounds, one for forward motion and another for reverse, to alert pedestrians, the blind, and others of its otherwise silent presence. For the 2011 model, the driver could turn off sounds temporarily through a switch inside the vehicle, but the system automatically reset to "On" at the next ignition cycle, but Nissan removed the ability to disable the pedestrian alert between model year 2011 and 2012 in anticipation of the U.S. ruling to be issued by the National Highway Traffic Safety Administration. After the new sounds were publicized, the U.S. National Federation of the Blind commented that "while it was pleased that the alert existed, it was unhappy that the driver could turn it off." The Leaf's electric warning sound had to be removed for cars delivered in the UK, as the country's law mandates that any hazard warning sound must be capable of being disabled between 11:00 p.m. and 6:00 a.m., and the Leaf's audible warning system does not allow for such temporary deactivation. Section::::First generation (2010–2017).:Production. In March 2013 Nissan had an installed capacity to produce 250,000 Leafs per year: 150,000 at Smyrna, Tennessee, 50,000 at Oppama, Japan, and 50,000 at Sunderland, England. The first vehicles sold 

RETRIEVAL #2 = Windscreen wiper---the wipers remove snow or ice. For these types of winter conditions, some vehicles have additional heaters aimed at the windows, or embedded heating wire(s) in the glass; these defroster systems help to keep snow and ice from building up on the windscreen. Less frequently, miniature wipers are installed on headlights to ensure that they function optimally. Section::::History. Section::::History.:Early versions. One of the earliest recorded patents for the windscreen wiper is by George J. Capewell of Hartford Connecticut, which was filed on August 6, 1896 . His invention was for an automated , motorised, wiper for "cars, locomotives, and such land-vehicles". Other early designs for the windscreen wiper are credited to Polish concert pianist Józef Hofmann, and Mills Munitions, Birmingham who also claimed to have been the first to patent windscreen wipers in England. At least three inventors patented windscreen cleaning devices at around the same time in 1903; Mary Anderson, Robert Douglass, and John Apjohn. In April 1911, a patent for windscreen wipers was registered by Sloan & Lloyd Barnes, patent agents of Liverpool, England, for Gladstone Adams of Whitley Bay. American inventor Mary Anderson is popularly credited with devising the first operational windscreen wiper in 1903. In Anderson's patent, 

RETRIEVAL #3 = Block heater---monoxide; also heat is available more instantly for the passenger compartment and glass defogging. Block heaters or coolant heaters are also found on permanently installed systems using diesel engines to allow standby generator sets to take up load quickly in an emergency. Section::::Usage. Block heaters are frequently used in regions with cold winters such as the northern United States, Canada, Russia and Scandinavia. In colder climates, block heaters are often standard equipment in new vehicles. In extremely cold climates, electrical outlets are sometimes found in public or private parking lots, especially in multi-storey car parks. Some parking lots cycle the power on for 20 minutes and off for 20 minutes, to reduce electricity costs. Research by the Agricultural Engineering Department of the University of Saskatchewan has shown that operating a block heater for longer than four hours prior to starting a vehicle is a waste of energy. It was found that coolant temperature increased by almost degrees in that period, regardless of the initial temperature. Four tests were run at ambient temperatures ranging from ; continued use of the heater for a further one or two, or more, hours achieved a mere 2 or 3 more degrees Celsius as conditions stabilized. Engine oil temperature was found to increase over these periods by just . There are alternatives to a block heater that offer some of the same benefits. These include 

RETRIEVAL #4 = National Highway Traffic Safety Administration---improperly referred to as "Euro" headlamps, since aerodynamic headlamps were already common in Europe. Though conceptually similar to European headlamps with nonstandardized shape and replaceable-bulb construction, these headlamps conform to the SAE headlamp design standards contained in U.S. Federal Motor Vehicle Safety Standard 108, and not to the international safety standards used worldwide outside North America. Section::::NCAP. In 1979, NHTSA created the New Car Assessment Program (NCAP) in response to Title II of the Motor Vehicle Information and Cost Savings Act of 1972, to encourage manufacturers to build safer vehicles and consumers to buy them. Since that time, the agency has improved the program by adding rating programs, facilitating access to test results, and revising the format of the information to make it easier for consumers to understand. NHTSA asserts the program has influenced manufacturers to build vehicles that consistently achieve high ratings. The first standardized 35 mph front crash test was May 21, 1979, and the first results were released October 15 that year. The agency established a frontal impact test protocol based on Federal Motor Vehicle Safety Standard 208 ("Occupant Crash Protection"), except that the frontal 4 NCAP test is conducted at , rather than as required by FMVSS No. 208 

RETRIEVAL #5 = Defogger---automatic timer to operate for a set time period of 10 to 15 minutes before switching off. This is because most defogging is achieved within that timeframe, after which the vehicle's heater has usually brought the interior of the vehicle to a warm enough temperature that the fog does not recur. However, if this is not the case, the driver may activate the system again once it has timed out. There is usually a telltale on the vehicle dashboard, often on the defogger switch, to let the driver know. Section::::See also. BULLET::::- Rear-view mirror 

RETRIEVAL #6 = Daytime running lamp---Coast have laws that require headlights to be switched on when windshield wipers are in use. Section::::Worldwide.:Australia. DRLs are permitted but not required in Australia, though the Australian College of Road Safety, an Australian automotive safety group, advocates for making DRLs mandatory rather than optional. Section::::See also. BULLET::::- Automobile safety BULLET::::- Bicycle safety