What are the common faults of the Envision 9AT transmission?

2 Answers
VonBryce
07/24/25 8:44pm
The Envision AT transmission commonly experiences issues such as jerky gear shifts, startup vibrations, abnormal noises, transmission oil leaks, delayed gear engagement, lack of reverse gear, inability to drive, illuminated fault lights, dashboard prompts for transmission maintenance, acceleration issues, being stuck in 3rd gear, and absence of 6th gear. These problems are typically caused by faults in the internal components of the Envision AT transmission, including the buffer plate, valve body, solenoid valve, transmission computer, oil pump, aluminum drum, one-way locking clutch, double-sided drum, and planetary gear set. These issues can often be resolved by repairing the mechanical parts inside the Envision AT transmission or servicing the transmission computer.
Was this review help?
15
3
Share
StWilliam
08/11/25 11:14am
I've encountered many car owners discussing transmission issues with the Envision's 9AT gearbox, which are actually quite common. Simply put, the problems often involve jerky or rough shifting, making the drive less smooth; sometimes the dashboard also lights up with warning indicators. Common causes include aged or leaking transmission fluid, leading to unstable internal pressure; there are also software bugs in the transmission control unit (TCU), such as outdated software causing erratic shift logic. On the hardware side, damaged valve bodies or sensors can trigger abnormal noises. More severe cases include worn or slipping clutch plates, which, if not repaired promptly, can lead to transmission failure. I remember helping a friend fix theirs last year, finding the issue was a clogged oil filter screen—replacing the fluid solved it. Repair costs can range from a few hundred to several thousand dollars, depending on the extent of the damage. So, regular checks of fluid levels are crucial; don't wait until symptoms worsen to address them.
Was this review help?
14
1
Share
Expand All
More Forum Discussions

What are the criteria for classifying heavy-duty vehicles?

Heavy-duty vehicles refer to M-class and N-class vehicles with a maximum gross mass exceeding 3500Kg. Such vehicles consist of a heavy-duty tractor and a heavy-duty trailer. Most of these vehicles employ axle-series hydraulic suspension systems and are primarily used for transporting large cargoes whose dimensions and weights exceed the limits stipulated by road traffic regulations. Heavy-duty tractor: A tractor designed for towing and pushing heavy-duty trailers. Equipped with high-power diesel engines, mechanical or hydraulic transmissions with high gear ratios, main reducers, and wheel reduction devices to lower speed and increase traction. Most heavy-duty tractors are 3-axle or 4-axle configurations, typically driven by the rear two axles, though some feature full front-and-rear axle drive. When towing full trailers, the tractor must carry additional ballast weight to increase the load on the driving wheels, ensuring sufficient adhesion between the tires and road surface. Heavy-duty trailer: Trailers designed for transporting oversized and overweight cargo. The basic configuration is a single flatbed trailer, most featuring the following structure. The axle frames typically employ two coaxial axles per unit (upper and lower axles on one assembly), also called twin-axle systems. Standard integrated flatbed trailers have 2-7 axles, with each axle carrying either 4 or 8 tires, allowing the overall vehicle width to exceed 3 meters.
13
5
Share

Can the Volkswagen Daytime Running Lights Be Turned Off?

Volkswagen daytime running lights can be turned off. The method to turn them off is as follows: Use the left turn signal lever to activate the left turn signal, then pull the high beam lever and hold it. Next, insert the key and turn it to the 'on' position without starting the engine. Wait for 4 seconds, and you will hear a 'ding' prompt sound, indicating that the daytime running lights have been turned off. The purpose of daytime running lights: Daytime running lights primarily enhance the visibility of the vehicle during the day, making it easier for oncoming vehicles or pedestrians to notice. Many people believe that daylight is sufficient and that daytime running lights are unnecessary. However, there are many situations during the day that can affect a driver's visibility, such as rain, snow, or haze, which can reduce the ability to see distant objects and lower visibility. In these cases, daytime running lights can play a significant role by informing other vehicles or pedestrians of the vehicle's exact position, thereby reducing the likelihood of accidents. Notes on daytime running lights: As the name suggests, daytime running lights are meant to be used during the day. Normally, these lights do not need to be manually turned on by the driver; they automatically activate when the engine starts, unless they have been modified aftermarket. When the headlights are turned on, the daytime running lights will automatically turn off or dim. Additionally, there is no indicator on the dashboard to show that the daytime running lights are on.
11
2
Share

Is CYS color change film domestically produced or imported?

CYS color change film primarily uses imported raw materials. Imported base paper and adhesive: The base paper and adhesive are directly imported from Europe and America. The original film material comes from German factories, and most special-effect color pigments are also purely imported products. The adhesive used in CYS color change film is entirely imported, making CYS the only brand in China's color change film market that uses purely imported adhesive. Color processing and adhesive application done domestically: Considering product development speed and production efficiency, CYS conducts color processing and adhesive application domestically to ensure product quality, faster time-to-market, and higher cost-performance ratio.
20
2
Share

What does the highway ETC refer to as a system?

ETC is an electronic toll collection system without stopping, also known as an automatic road toll system. It is a road toll method specifically used for toll roads, commonly seen on highways, bridges or tunnels implementing toll policies, and some sections of the city center, to alleviate urban traffic congestion. According to the regulations of the State Council, starting from 2020, vehicles without ETC cannot enjoy toll discounts. In the future, only one manual lane will be retained at highway toll stations, and tolls can only be paid through manual channels. Additionally, newly installed ETC cannot be used on highways immediately; the ETC device needs to be activated before normal use. During free holiday periods, highways can still be used. For users who have already installed ETC, passing through ETC lanes will not incur charges. ETC deduction principles: There will be one or more ETC lanes on highways. Through dedicated short-range microwave communication between the vehicle-mounted electronic tag installed on the vehicle's windshield and the microwave antenna in the ETC lane at the toll station, and using computer networking technology for backend settlement with banks, the purpose of paying road and bridge tolls without stopping at toll stations is achieved. All of this is based on the principle of passing first and deducting fees later. Benefits of installing ETC: Time-saving: Eliminates the hassle of queuing and waiting; Green and environmentally friendly: Green and low-carbon, vehicles pass through toll stations without stopping, reducing noise and exhaust emissions, and decreasing pollution; Cost-saving: Saves expenses, reduces the frequency of vehicle starts and brakes, lowers wear and fuel consumption, and users can also enjoy a 5% discount on tolls; Improved efficiency: The theoretical efficiency of ETC lanes can be increased by 2-3 times, making traditional ETC more updated, faster, and more high-tech. Compared to license plate payment, ETC technology is more mature and advantageous. More policy support: The State Council clearly stated in the "13th Five-Year Plan for the Development of a Modern Comprehensive Transportation System" that "by 2020, the interoperability of transportation smart cards in key city clusters will be basically achieved, and the proportion of vehicles equipped with ETC will be significantly increased." It also explicitly set the goal in the main indicators of the "13th Five-Year" comprehensive transportation development that "by 2020, the ETC usage rate for road passenger vehicles will reach 50%." More future possibilities: In addition to continuously improving the convenience of ETC installation and usage and the usage rate of ETC passenger vehicles, the future will also promote the use of ETC for trucks, explore the deep integration of the ETC system with vehicle-to-vehicle communication, vehicle-road coordination, and other smart transportation development directions, providing comprehensive travel services for car owners. This means more application scenarios will support ETC applications. ETC usage precautions: The ETC transaction sensing area is 8 meters. When encountering a vehicle in front stopping, to prevent the ETC device of the front vehicle from malfunctioning or not having an ETC device at all, maintain a distance of more than 10 meters from the front vehicle to avoid automatic sensing and paying for the front vehicle. The recognition speed for ETC lane passage is 20 km/h. If the speed is too fast, the vehicle device information cannot be read, leading to failed deductions. Unauthorized disassembly or movement of the OBU device, or detachment or loosening of the ETC electronic tag, will cause the electronic tag to fail. It can be sent to the bank where the ETC card was issued or the highway service hall for testing. If the loosening or detachment is not man-made, it only needs to be reactivated. When using a debit card bound to ETC, insufficient balance will also cause deduction failure. Follow the guidance of on-site staff to use the manual MTC lane and pass by cash or card. Excessive thickness of the car windshield can cause poor sensing. This is especially important for vehicles that have had accidents and had their windshields replaced or for friends who have modified their front windshields.
11
4
Share

Is GF-6A oil low ash?

GF-6A oil is low ash. Definition of low ash oil: It is a specially designed oil for vehicles equipped with exhaust gas purification devices. Causes of low ash oil: It refers to the incombustible metal salts and metal oxides (such as metal sulfates, etc.) remaining after the oil is completely burned under specified conditions, usually caused by additives in the oil. As the ash content increases, the engine displacement gradually decreases, but the power does not decrease, which means the "power per liter" continues to increase, thereby increasing the pressure on the engine.
16
2
Share

What device is the power source of a tank?

The power plant is the power source of a tank. Tank power: It consists of the engine and its auxiliary systems. The auxiliary systems of the engine include the fuel supply system, air supply system, lubrication system, cooling system, heating system, and starting system. Function of the power source: The power plant of a tank is its power source. It is primarily used to generate the traction force that propels the tank and enables it to reach the required speed. This power plant also drives the generator to produce electricity, supplying power to the onboard electrical devices and charging the batteries, as well as operating the hydraulic and pneumatic devices. The power plant is often likened to the "heart" of a tank.
5
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.