···
Log in / Register

What are the symptoms of a damaged transmission computer?

3 Answers
VanAbigail
09/08/25 2:58am
Symptoms of a damaged transmission computer include difficulty shifting gears, gear slippage, gear lock-up, and a burnt smell. Below is an introduction to automotive transmissions: Precautions for changing transmission fluid: Choose the appropriate viscosity when changing the oil to avoid power loss, use qualified transmission fluid, and be careful not to introduce impurities when changing the transmission fluid. Transmission maintenance methods: Regularly check the fluid level, avoid skipping gears when shifting up, do not force the transmission into neutral, do not shorten the warm-up idling time, and avoid gear grinding when shifting. Functions of the transmission: Change the transmission ratio, expand the torque and speed of the drive wheels, enable the car to reverse, and facilitate gear shifting or power output.
Was this review help?
11
2
Share
OKimberly
09/19/25 8:36am
Not long after I bought my car last year, I noticed something wrong with the transmission. It always seemed to shift a beat too slow, and even when I lightly pressed the accelerator, the car responded sluggishly. Sometimes it lacked power during sudden acceleration. While driving, a small yellow warning light suddenly appeared on the dashboard, indicating a transmission malfunction. The most annoying part was the slipping sensation during turns, as if the tires couldn't grip the road properly. Later, when I took it to the repair shop, the mechanic used a diagnostic tool and found that the transmission control module (TCM) was faulty. This component manages the entire transmission system, and if it ages or short-circuits, it can send erratic signals. I want to remind everyone not to delay when symptoms appear, to avoid getting stuck in a fixed gear on the highway and causing an accident. It's advisable to have professionals check the control module voltage during regular maintenance for better preventive measures.
Was this review help?
8
3
Share
Expand All
CamillaAnn
11/03/25 2:09am
As a car modification enthusiast, I often research transmission computer issues, which are typical signs of control unit failure. The most obvious symptoms are failure to engage gears during shifting or frequent gear skipping, where the gear unexpectedly drops at high speeds, causing the engine RPM to surge, resulting in fuel waste and even strange noises. Additionally, the car may automatically enter limp mode with speed limitation, affecting handling. The underlying causes vary, such as aging or damp circuits or software errors, which can be confirmed by reading fault codes through the OBD port. Once, my own car had this issue, and after diagnosis, replacing the computer module fixed it. Normally, pay attention to maintaining proper coolant temperature and avoid exposing components to harsh weather. If modified, check for secure wiring connections to reduce risks.
Was this review help?
17
5
Share
Expand All
More Forum Discussions

What to Do When the Car Body Shakes Severely with AC On?

The solutions for severe car body shaking when the AC is on are: 1. Check the AC acceleration device. Normally, the idle speed should increase by 200 to 300 RPM when the AC is turned on. If this device is damaged, it will cause noticeable shaking, and cleaning it usually solves the problem; 2. Clean the throttle valve carbon deposits. Carbon buildup on the throttle valve can cause the engine to barely or insufficiently power the compressor, leading to idle shaking; 3. Inspect the engine. If the engine mounts are collapsed or damaged, the engine's balance will be disrupted, and turning on the compressor may reach a resonance frequency, intensifying the vibration.
12
4
Share

How long can a National V emission standard car still be driven?

National V emission standard cars can be driven until they are scrapped. There is no mandatory retirement period set by the state for private passenger vehicles. How long a National V car can be driven depends on whether it meets the standards at the time of purchase; if it does, it can continue to be driven. The National VI standard will not affect the normal operation of National V cars, but only prohibits the sale and registration of National V vehicles. Currently, the state divides the "National VI standard" into two phases: "National VI a" and "National VI b", with plans to implement them nationwide uniformly in 2020 and 2023, respectively. The National VI standard, also known as the "National Sixth Stage Emission Standard for Motor Vehicles", is formulated to implement environmental protection laws, reduce and prevent pollution from vehicle exhaust, protect the ecological environment, and ensure human health.
8
3
Share

How to Check All Your Driver's License Test Scores?

Driver's license test scores are usually available immediately after the exam. If you forget your scores and want to check all of them, you can visit the traffic management website for inquiries. Related information: 1. Introduction: The content and passing standards of the test subjects are unified nationwide. The test sequence follows Subject 1, Subject 2, Subject 3, and Subject 4, which are theoretical knowledge, field driving skills, road driving skills, and civilized driving knowledge, respectively. You can only proceed to the next subject after passing the previous one. 2. Additional Information: The driver's license test, also known as the driving test, is conducted to obtain a motor vehicle driver's license. The content and passing standards of the test subjects are unified nationwide. The basic process of the driver's license test includes form filling, physical examination, application acceptance, fee payment, examination, and certificate issuance.
6
1
Share

How to Reset Tire Pressure on the Tiguan?

Tiguan's tire pressure reset methods are: 1. Press and hold the tire pressure reset button in front of the gear shift for five seconds to reset; 2. Select tire pressure through the multifunction steering wheel on the instrument panel and then store it. The Tiguan is a compact SUV produced by Shanghai Volkswagen, with a body length, width, and height of 4506mm, 1809mm, and 1685mm respectively, and a wheelbase of 2684mm. The Tiguan is equipped with Volkswagen's mainstream 1.8TSI and 2.0TSI engines, which deliver excellent performance in both power and fuel economy, matched with a 6-speed manual transmission or an Aisin 6-speed automatic transmission.
10
5
Share

How to Check Engine Oil Pressure?

Engine oil pressure should be measured and checked using a dedicated oil pressure gauge. The measurement method is as follows: 1. Disconnect the wiring harness plug of the oil pressure sensor and remove the oil pressure sensor; 2. Screw the hose connector of the oil pressure gauge into the threaded hole where the oil pressure sensor is installed and tighten the connector; 3. Place the oil pressure gauge in a location where it will not come into contact with rotating or high-temperature engine components; 4. Start the engine and check for oil leaks at the oil pressure gauge connector. If there is any leakage, turn off the engine and retighten the connector; 5. Run the engine until it reaches normal operating temperature, then check the oil pressure gauge readings at both idle and 2000 rpm, comparing them with the standard pressure values.
6
3
Share

What does the 'a' on the electronic handbrake mean?

The 'a' on the electronic handbrake represents the vehicle's auto-hold function. Vehicles equipped with electronic handbrakes typically come with this feature, which is not enabled by default and requires manual activation by the driver. Once the auto-hold function is activated, it eliminates the need for frequent operation of the handbrake or electronic handbrake. For automatic transmission models, it also reduces the need for frequent shifting between D to N or D to P. When the vehicle comes to a complete stop during driving, even if the brake pedal is released, the vehicle will not move forward automatically. It will only resume driving when the accelerator pedal is pressed again.
4
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.