Why does the car always prompt to shift to P gear?

1 Answers
Silas
07/29/25 1:57pm
When an automatic transmission vehicle continuously prompts the need to shift to P gear, it may indicate a potential fault in the transmission system. Below is relevant information about gear positions: 1. Concept: Gear positions are adjustment devices that regulate the speed and traction (torque) of a vehicle. Lower gears result in slower speeds but greater vehicle traction (torque), while higher gears lead to faster speeds but reduced vehicle traction (torque). Gear positions are generally divided into two main categories: forward gears and reverse gear. Engaging a forward gear moves the car forward, while engaging the reverse gear moves it backward. 2. Standard car gear positions: Typically, standard cars have five forward gears and one reverse gear. The first forward gear is always the starting gear, where the speed is the slowest (0-10 km/h) but the torque is the greatest.
Was this review help?
18
2
Share
More Forum Discussions

How to Identify Whether a Car is China V or China VI?

To identify whether a car is China V or China VI, you can check the following aspects: 1. The relevant number in the emission standard column on the vehicle certificate: According to relevant laws and regulations, dealers are required to provide a certificate with the vehicle when selling it. Without this certificate, the vehicle cannot be registered. On the certificate, there is a column for the emission standard, which clearly indicates the emission standard number adopted by the vehicle. It doesn't matter if you don't understand the preceding numbers; the key is whether it states China V (indicating a China V model) or China VI (indicating a China VI model). 2. The relevant number on the environmental information list accompanying the vehicle: When purchasing a car, in addition to the certificate, there is an environmental information list in the accompanying documents. In the vehicle information section, there is a column for the emission stage, which will clearly and directly indicate whether the vehicle is China V or China VI. Just look carefully. 3. The relevant number in the vehicle conformity certificate: When picking up the car, there is another document called the vehicle conformity certificate, which contains many verification items. One of them is called "exhaust emissions," which directly states the standard number adopted for the 3C certification. GB18352.5-2013 refers to the fifth-stage emission standard, i.e., China V, while GB18352.6-2016 refers to the sixth-stage emission standard, i.e., China VI. 4. The number queried on the Motor Vehicle Environmental Protection Website: Simply visit the Motor Vehicle Environmental Protection Website, click on the public query platform, and then enter the VIN (vehicle identification number) and the last six digits of the engine number to query the relevant vehicle information, including content that can determine whether it is a China V or China VI vehicle.
3
1
Share

Can a 7-Seater Vehicle Operate on Didi?

Some regions allow 7-seater vehicles to operate on Didi. All eligible vehicle models must be listed in the Didi partnership program. In certain areas, 7-seater commercial vans with a base price exceeding 70,000 RMB can register for Didi services. However, other regions prohibit 7-seater commercial vehicles from registering due to their excessive wheelbase length, which fails to meet Didi's vehicle standards. Below are precautions for using Didi: 1. Before boarding, always verify that the license plate matches the vehicle model and observe the driver's behavior. If anything seems unusual, you can cancel the order via the app. During the ride, monitor whether the driver follows the planned route. If deviations occur, maintain phone contact with a trusted person. 2. If you notice anything suspicious, seek assistance or report it immediately. Avoid taking rides late at night, especially when traveling alone. Stay vigilant to protect your valuables and opt for the rear seats to minimize risks in case of accidents.
6
5
Share

How many minutes and what RPM is needed for high-speed driving to clean carbon deposits?

On the highway, using an appropriate gear to keep the engine running above 3500 RPM for more than 15 minutes can effectively remove carbon deposits. For example, driving at 110 km/h in 3rd gear or around 140 km/h in 4th gear. Below are relevant explanations: 1. Carbon deposits: Carbon deposits in engines refer to a coking-like substance produced from unsaturated olefins and gum in fuel under high-temperature conditions during engine operation. 2. Carbon cleaning: The theoretical basis of so-called high-speed driving to clean carbon deposits is to make the engine work continuously at high RPM, maintaining high intake/exhaust pressure and cylinder working temperature, which helps wash away carbon deposits not fully adhered to the cylinder walls and burn them into exhaust gases.
16
3
Share

Can a pickup truck's vehicle license be changed to a multi-purpose vehicle?

7-speed dual-clutch transmission is based on a manual transmission rather than an automatic transmission, but it is an automatic gearbox. A dual-clutch transmission must be an automatic gearbox, so a 7-speed dual-clutch is firstly an automatic transmission, and also a manual-automatic transmission. Both manual-automatic transmissions and dual-clutch transmissions are types of automatic transmissions, representing upgraded products for automatic vehicles, providing drivers with greater comfort and better adaptability to various road conditions. Below are some considerations regarding dual-clutch transmissions: 1. Advantages of dual-clutch transmissions: They offer fast gear shifting, compact size and light weight, and lower energy consumption, which is why some performance cars adopt dual-clutch transmissions. 2. Dual-clutch transmissions do not have a torque converter. Improper operation can cause clutch slippage, overheating, and unnecessary wear. The clutch only disengages when the brake pedal is pressed.
14
2
Share

Is a 7-Speed Dual Clutch Transmission Considered a Manual-Automatic Transmission?

7-speed dual clutch transmission is based on manual transmission rather than automatic transmission, but it is an automatic transmission. Dual clutch must be an automatic transmission, so a 7-speed dual clutch is first an automatic transmission, and then it is also a manual-automatic transmission. Both manual-automatic transmission and dual clutch transmission are types of automatic transmissions, and they are upgraded products of automatic transmission vehicles, making driving more comfortable and adaptable to various road conditions. The following are precautions regarding dual clutch transmissions: 1. Advantages of dual clutch transmission: Dual clutch transmissions have fast shifting speed, small size and weight, and low energy consumption, so some performance cars use dual clutch transmissions. 2. Dual clutch transmissions do not have a torque converter. Improper operation can cause the clutch to slip, overheat, and result in unnecessary wear. The clutch will only disengage when the brake pedal is pressed.
2
1
Share

What is the reason why the differential lock cannot be turned off?

It may be due to air leakage in the differential lock's air tube. Here are the relevant explanations: 1. Differential: A conventional differential allows the left and right wheels to rotate at different speeds, but when one wheel spins freely, the other wheel on good road surface also fails to receive torque, causing the vehicle to lose driving power. In this situation, the differential does not function. By locking the two wheels together, power can at least be transmitted to the other wheel, enabling the vehicle to regain driving power and escape the predicament. 2. Working principle of the inter-wheel differential: When the vehicle is moving straight, the driven bevel gear of the main reducer drives the differential case to rotate. The differential then drives the planetary gear shaft to rotate, which in turn drives the planetary gears to revolve. The side gears, held by the planetary gears, rotate at the same speed and direction. At this point, the planetary gears only revolve without rotating on their own, and the speed of the left and right wheels equals the speed of the driven bevel gear.
17
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.