What is the meaning of the following letters in an automatic car; P, R, N, D4, D3, 2 & 1?

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Automatic transmission modes
In order to select the mode, the driver must move a gear shift lever which can be located on the steering column or on the floor next to the driver. In order to select gears/modes the driver must push a button in (called the shift lock button) or pull the handle (only on column mounted shifters) out.

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Automatic Transmissions have various modes depending on the model and make of the transmission. Some of the common modes are:

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Park (P) – This selection mechanically locks the transmission, restricting the car from moving in any direction. A pin prevents the transmission from moving forward (although wheels, depending on the drive train, can still spin freely), it is recommended to use the hand brake (or emergency brake) because this actually locks the wheels and prevents them from moving, and increases the life of the transmission and the park mechanism. A car should be allowed to come to a complete stop before setting transmission into park to prevent damage. Park is one of only two selections in which the car can be started. In some cars (notably those sold in the US), the driver must have the footbrake depressed before the transmission can be taken out of park.

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Reverse (R) – This puts the car into the reverse gear, giving the ability for the car to back up. In order for the driver to select reverse they must come to a complete stop, and push the shift lock button in and select reverse. Not coming to a complete stop can cause severe damage to the transmission.

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Neutral/No gear (N)– This disconnects the transmission from the wheels so the car can move freely under its own weight. This is the only other selection in which the car can be started.

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Drive (D)– This allows the car to move forward and accelerate through a range of gears. The number of gears a transmission has depends on the model, but they can commonly range from 3, 4 (the most common), 5, 6 (found in VW/Audi Direct Shift Gearbox), and 8 in the new model of Lexus cars.

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D4 – In Honda and Acura automatics this mode is used commonly for highway use (as stated in the manual) and uses all 4 forward gears.
D3 – This is also found in Honda and Acura automatics and only uses the first 3 gears and according to the manual it is used for stop & go traffic such as city driving.
+ - and M – This is the manual selection of gears for automatics with Tiptronic. The driver can shift up and down at their will.
Second (2 or S) – This mode limits the transmission to the first two gears, or more commonly locks the transmission in second gear. This can be used to drive in adverse conditions such as snow and ice, as well as climbing or going down hills in the winter time.

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First (1 or L) – This mode locks the transmission in first gear only. It will not accelerate through any gear range. This, like second, can be used during the winter season, or towing.

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Some cars when put into D will automatically lock the doors or turn on the daytime running lights.

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park,reverse,netrual,drive4, drive3, second gear ,first gear.

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P = Park
R = Reverse
N = neutral
D4 = Drive 4th gear ( overdrive ) the gear you want to be in when driving
D3 = third
2 = 2nd
1= first

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P = Park
R = Reverse
N = Neutral
D4 = Drive ( 4th gear or standard drive range of overdrive tranny)
D3 = Drive ( 3rd gear, often used in slow city traffic, or hilly areas)
D2 = Drive ( 2nd gear, not often used, very hilly areas)
D1 = Drive ( 1st gear, not often used )

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park reverse neutral overdrive drive 2nd gear low 1st gear low

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P = park
R = reverse
N = Neutral
D4 = drive (allow the transmission to upshift through 4th gear)
D3 = drive (allow the transmission to upshift through 3rd gear)
D2 = drive (allow the transmission to upshift through 2nd gear)
D1 = drive (allow the transmission to upshift through 1st gear)

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P ark
R everse
N eutral
D4 1st thru 4th gear in automatic
D3 1st thru 3rd gear in automatic (use if car trying to go too fast downhill)
D2 1st thru 2rd gear in automatic (use if car trying to go too fast downhill)
D1 1st gear only for really steep hills

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P = park. The tires will not roll in park.
R = reverse. Used to back the car up.
N = neutral. Transmission is not engaged, and the vehicle will roll.
D4 = The normal drive position for the vehicle. Sometimes called over drive.
D3 = Locked out of overdrive, or 4th gear. Most often used climbing hills or pulling trailers.
2 = Locked in second gear
1 = Locked in low gear.

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You wouldn't want to ever drive in 2 or 1

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i own a repair shop,and i could explain what all of these mean but if you,ll get the owners manual out and read it ,it tells what all these are and when to use certain gears and when not too,and i bet you,ll remember them better if you read them from the manual rather than,me tell you,the owners manual is probably the most important book you can ever read on your car and yet very few people ever read it,you should try it sometime,it will tell you things about your vehicle that you may never know about it,good luck i hope this help,s.

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On the transmission shifter
P Park, standing still engine on or off.
R Reverse, the vehicle will go backwards when the accelerator is pressed.
N Neutral- The engine may be turning over, but the transmission is not engaged.
D4 Top gear, usually an over drive or high speed gearing.
D3 Third gear, the gearing used for accelerating or sometimes going up a grade.
D2 Second gear, the gear ratio that allows the vehicle to accelerate fast enough to engage third gear without lugging the engine. Used as a engine brake to slow the vehicle when descending a steep grade.
D1 First gear, usually used to start the vehicle from a standing stop to a speed fast enough to move into second gear. Also used to keep the vehicle under control in icy or severe road hazard conditions.

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Make sure you don't go driving around in that car your referencing until you understand the full use of those letters because you may damage the car. Get an owners manual if you dont own one for the car and read and highlight it, make notes.

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Car repairs can be VERY expensive and you could do something that seems minor and end up with a $3,000 bill. So do yourself a favor, don't rely on anyone else to keep your car running well. Buy a basic car repair manual and read about it. If you heed the experts warnings, you will save yourself over $100,000 in your lifetime from unecessary repairs.

my engine light comes on priodically for ford explorer 1996?

p-park- no engagement between the motor and transmission and wont allow the car to move
r-reverse- moves the car backwards
n-neutral- no engagement between the motor and transmission but will allow the wheels to turn freely at their will
d4- drive 4th gear- (recommended) normal forward operation, will allow the car to get up to 4th gear
d3- drive 3rd gear- normal forward operation, will allow the car to get up to 3rd gear
2- will only get up to 2nd gear, dont drive your car fast in this gear
1- will only allow the car to stay in 1st gear, only for uphills

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if you don't know what they mean than perhaps you shouldn't be driving. Figure it out before attempting to move the vehicle for the safety of all around you.
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