What do the numbers on a transmission mean?

Rather, each number simply represented the highest gear to which the transmission would shift automatically with the lever in that position.

What are the numbers on an automatic transmission?

Most automatics also allow you to manually select one or more lower gears, such as Low (L), 1st (1) and 2nd (2). In the case of L and 1, the transmission will stay in the lowest gear and not shift on its own. That allows maximum power when you need it, such as on a steep hill, but greatly limits your speed.

How do you identify transmission numbers?

Open the driver's side door and find the white card on the side of the door that is filled with small black lettering. This card contains specific details about the year the car was made, its transmission, engine specifications and other details. Underneath or beside the “TR” symbol will be a number code.

What do the numbers and letters mean on an automatic transmission?

P, R, N, D, and L – The Gears of an Automatic Transmission. You've no doubt noticed that most vehicles have a gearshift control with the letters “P, R, N, S” and “L.” These all indicate different states for your transmission and correspond to various operational modes. P stands for park. R stands for reverse.

What do gears 1 2 3 mean in a car?

N – Neutral. D – Drive. 3 – Third gear 2 – Second gear 1 – First gear. O – Overdrive (if equipped) Table of contents.

Transmission Tag Identification

What does D D1 D2 D3 mean?

The D1, D2, D3 gears can be used in place of the brakes. On the occasions like you are experiencing a downhill or approaching red lights and you don't want to apply the brake, these D options are for you. So basically, this can come handy if you need to slow down the vehicle when your car suffers brake failure.

Should I drive in D3 or D4?

While D3 is suitable when ascending or descending a hill and serves as the ideal gear position for a stop-and-go driving situation, D4 is most suitable for driving on a freeway (highway), especially when driving from one city to another.

What is D1 and D2 in automatic transmission?

Make Sure of The Selector Lever Position:

Make sure the selector lever is in the desired position. "D", "1 (D1)", "2 (D2)" are used to move forward and "R" to back-up. Then release the parking brake lever and foot brake pedal. Depress the accelerator pedal to start the vehicle.

What does D3 mean in automatic cars?

D3 (or 3) As the name suggests, the D3 (or sometimes just 3) mode will only utilize the first 3 gear ratios of your car, or in some, locks it on the 3rd gear only. Just like the 2 and L, it will shift at a higher gear if the maximum RPM has been reached.

What is on the transmission identification tag?

The ID of ALL B/W and Tremec transmissions is found on a metal tag bolted to the main case. The number found on the main case or tail shaft housing will not ID the transmission.

How do I know if I have 4L60E or 4L80E?

Appearance. The 4L80E can be told apart from the 4L60E by looking at their transmission fluid pan. This is because the 4L80E has a pan that is oval in shape whereas a rectangular pan is featured by the 4L60E. Another disparity between both devices is the number of bolts used to secure the transmission to the engine.

Will my VIN number tell me what transmission I have?

Unfortunately, this is not required by the NHTSA VIN standard. Some OEMs still use the same 10-digit VIN patterns for automatic and manual transmission vehicles, meaning that VIN alone will not be enough to determine the vehicle's transmission type.

What's the 1 and 2 on an automatic transmission?

By setting L (or 1 or 2), the gear will stay low and you will be able to use engine brake, instead of using brakes all the way down the hill and suffering from fading. The transmission will not necessarily pick a lower gear when going downhill, although they will pick a low gear if you are going uphill.

What does 4D mean on a car gear shift?

Therefore, when you see 4D in your vehicle's dashboard, it means that you're driving (D) and in fourth gear (4D). Basically, when your gear shift is in the 4D position, it means that the vehicle will drive on its fourth gear in equilibrium after reaching the correct speeds.

What gear should I drive in?

A good rule of thumb is: higher gears and easy throttle equals less torque and the least amount of wheel spin. Lower gearing and more throttle equals more torque and the most amount of wheel spin. Downhill: Use first gear when driving downhill as a primary source for braking.

Should I drive in D or D3?

D3 is generally used for city driving, while D2 or L is generally used for off-road driving or when you need to drive through a steep road.

What does D5 D4 D3 mean in a car?

For faster acceleration when in D3, D4 or D5, you can get the transmission to automatically downshift by pushing the accelerator pedal to the floor. The transmission will shift down one or two gears, depending on your speed. Second (2) — This position locks the transmission in second gear.

Can you shift to D2 while driving?

You can manually change to some gears while driving an automatic car. Other gears you should never switch to unless you are completely stopped as it can severely damage your engine. Most modern cars thankfully won't let you switch to some gears while driving to stop any mechanical disasters.

What does R mean in automatic cars?

The “R” stands for REVERSE, or the gear selected to drive the vehicle backward. When you shift the gear lever from P to R, the automatic transmission's reverse gear is engaged — which spins the drive shaft backward, allowing the drive wheels to spin in 'reverse'.

What does plus on gear shift mean?

“The plus/minus is your up shift and your downshift,” said T.J. Male, operations manager for Stanley Driving School. Many drivers own the technology that transforms their transmission from an automatic to a standard but don't know it.

What does D D off mean in a car?

Your Over Drive has been turned off. By pressing the button on or near the shifter, you disabled Overdrive (OD). This keep the vehicle from shifting into a higher gear when you don't need it while driving around town at speeds less than 40MPH.

Is D3 good for snow?

I use D3 in snowy conditions and climbing hills. In the winter, it helps prevent slippage from gear shifts. You can't slow down in the snow on a hill or you will get stuck. This helps traction a bit.

What is D3 gear used for?

D3 reduces the pressure on the braking system, ensuring the pads don't overheat. By utilizing this lower gear, the engine will keep the speed in check. However, running at high RPMs for too long can also cause wear to the engine.

What is D4 gear used for?

Drive (D4) — Use this position for your normal driving. The transmission automatically selects a suitable gear for your speed and acceleration. You may notice the transmission shifting up at higher speeds when the engine is cold. This helps the engine warm up faster.