What do the plus and minus signs on the D gear of an automatic transmission car mean?
1 Answers
The D gear with plus and minus signs on an automatic transmission car is for a semi-automatic transmission, which is a type of automatic transmission. It adds the function of manual shifting on top of the automatic transmission, but there is essentially no significant difference between the two. Here is an introduction to the relevant content: 1. First, pull the gear lever down to engage the "D" gear, then push the lever to the left until "M/S" lights up, which means you have entered manual mode. When you need to shift gears, push the lever forward to downshift and pull it backward to upshift. 2. Push the lever back to the right to return to automatic mode. You can switch between manual and automatic modes at any time without braking, and you don't need to release the accelerator. Also known as the drive gear, when the gear lever is placed in this position, the hydraulic system control device automatically connects the corresponding forward gear oil circuit based on the throttle opening signal and vehicle speed signal. 3. The D gear of an automatic transmission car does not have the engine braking function and will continuously shift to higher gears as the downhill speed increases, causing the car to go faster and faster. You must constantly use the foot brake to control the speed, which can easily cause the brakes to overheat and fail due to excessive use, which is very dangerous. Therefore, when driving an automatic transmission car on a long downhill, do not use the D gear to prevent accidents.