Browse

Property For Sale Property For Rent

Used Cars Others

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Others Pet Supplies Sporting Goods Ticket Toys Games Transportation

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

What Causes Transmission Control Unit Failure?

2 Answers

LeJoseph

08/26/25 4:03am

Electronic control system malfunction. Issues with working fluid, insufficient oil pressure or inadequate cooling. Hydraulic oil leakage, oil pump damage, automatic transmission running without oil. Excessive wear of friction plates, brake failure and water ingress into the transmission. Electronic control system malfunction. Solenoid valve failure causing transmission slippage, etc. More relevant information is as follows: Transmissions are classified into: 1. Stepped transmission: Stepped transmissions use gear drives with several fixed gear ratios; 2. Continuously variable transmission (CVT): CVTs can continuously obtain any gear ratio within the transmission range; 3. Integrated transmission: Integrated transmissions refer to hydromechanical transmissions composed of a torque converter and a geared stepped transmission.

Was this review help?

17

0

Share

DeAaliyah

09/08/25 5:05am

I've seen my fair share of transmission control unit failures, mainly caused by electrical system issues. For instance, loose or corroded wire connectors can disrupt signal transmission, leading to jerky gear shifts. Component aging is a major factor – over time, circuit board elements in the control unit degrade, especially when summer heat causes overheating and burnout. Water intrusion is another common culprit; rainwater entering the engine bay can short-circuit the control unit. Vibration damage shouldn't be overlooked either – driving on rough or bumpy roads can loosen internal components. Don't forget software glitches either, like failed system updates causing programming bugs that disrupt shifting. Ignoring these issues can lead to vehicle stuttering or complete stalling, seriously compromising driving safety. Regular wiring inspections and engine bay cleaning are crucial to avoid costly overhauls.

Was this review help?

6

0

Share

Expand All

More Forum Discussions

What are the differences between the Toyota Levin and Corolla?

The differences between the Toyota Levin and Corolla lie in their ground clearance: the Toyota Levin has a ground clearance of 105mm, while the Corolla has a ground clearance of 145mm. The Toyota Levin is a compact sedan with body dimensions of 4630mm in length, 1775mm in width, and 1480mm in height. In terms of power, the Toyota Levin is equipped with a 1.2T engine, model 1ZR, delivering a maximum power of 85kW and a maximum torque of 185Nm. For suspension, the Toyota Levin features a MacPherson strut front suspension and a torsion beam rear suspension.

How Long Does It Take to Fully Charge the Battery at Idle Speed?

When a car is completely out of power, charging at 1500 RPM for 20 minutes can provide enough power to start the engine once. If charging at 1500 RPM for more than 60 minutes, the battery will be nearly fully charged. When the car is not in use for an extended period, it is advisable to unplug the power connector to prevent severe battery discharge. Below is an introduction to charging at idle speed: 1. If the charging indicator light is on while the car is idling, it indicates that the battery is not being charged and is still discharging. Normally, when the charging indicator light is on, the battery is being charged, but the charging current is very small. When the ignition switch is turned on, the battery supplies excitation current to the generator and provides voltage to the regulator's detection and control section through the ignition switch, fuse, charging indicator light, and diode. 2. The energy balance in the car must also be considered. After the engine is shut down and restarted, the battery's charging state must be taken into account. The battery can be seen as an energy storage device that powers various loads. Conversely, the alternator must charge the battery as an energy provider. If the battery's discharge exceeds its charge, even a high-capacity battery will gradually discharge until it is completely depleted. 3. In reality, the charging indicator light on the vehicle does not indicate whether the battery is being charged or at what engine speed charging occurs. Under heavy load conditions, the alternator may cause the charging indicator light to go off, but the battery may not be charging and could instead be discharging. It is also important to note if the charging indicator light does not turn off even at high speeds.

What car has two upside-down V's as its logo?

Two upside-down V's represent the Citroën automobile brand. Here are some key facts about Citroën: 1. Citroën is a brand under Automobiles Citroën, founded by André Citroën in 1919; 2. During its initial establishment coinciding with World War I's peak, the company primarily manufactured artillery shells and military equipment. It only began automobile production after the war ended; 3. Citroën became France's first company to adopt assembly line production, achieving an annual output exceeding 100,000 vehicles within just six years of its founding.

What do RES and SET mean?

RES and SET have the following functions: RES has two functions: one is to accelerate after setting the cruise control, and the other is to press RES to restore the previously set speed after temporarily canceling the cruise control. SET also has two functions: one is to decelerate after setting the cruise control, and the other is to press SET to set the current speed as the cruise speed after temporarily canceling the cruise control. Extension: A wheel-shaped device used to control the direction of cars, ships, airplanes, etc. Its function is to convert the force applied by the driver to the edge of the steering wheel into torque and then transmit it to the steering shaft.

Can the Power Tailgate Be Closed Manually?

Models equipped with power tailgates cannot be closed directly by hand. Here is the relevant information: 1. Principle of Power Tailgate Composition: The basic structure of a power tailgate consists of two core-driven rods. The drive rod, via a spindle drive, is composed of an inner tube and an outer tube. The motor and gear inside the inner tube drive a threaded spindle, which moves along a threaded nut fixed to the inner side of the outer tube. The electric strut uses an electric spindle located inside the motor within the strut to open and close the trunk lid, with springs assisting in the opening operation. 2. Avoid Manual Closing: Models with power tailgates should not be closed directly by hand, as this can cause excessive wear on the internal motor, gears, and telescopic components, thereby reducing their lifespan. It is best to use the switch for opening and closing.

What is the minimum ground clearance of the Toyota Levin?

Toyota Levin's minimum ground clearance is 105mm. The minimum ground clearance refers to the distance between the lowest point of the vehicle (excluding wheels) and the supporting surface when fully loaded or stationary, which indicates the vehicle's ability to pass over obstacles such as rocks and tree stumps without collision. The Toyota Levin is a compact sedan under GAC Toyota, with body dimensions of 4645mm in length, 1775mm in width, and 1480mm in height, and a wheelbase of 2700mm. The Toyota Levin is equipped with a 1.8L naturally aspirated engine, delivering a maximum power of 73kW, a maximum torque of 152Nm, with the maximum power achieved at 5200 rpm and the maximum torque at 4000 rpm.

Trending Ranking

Which switch is used for windshield defogging?

Does a manual transmission need gearbox oil change?

What does lightly pressing the brake pedal mean?

What does 2.0xl mean?

What is the function of an intercooler?

How does an ECU work?

What is the fuel consumption of the ATS-L?

How to Obtain a New Energy Vehicle License Plate in Shanghai?

What Causes Severe Car Vibration?

What does 'vehicle online inspection' mean?

More Forum Discussions

Can antifreeze of different colors be mixed?

How to Quickly Remove Formaldehyde from a Newly Purchased Car?

What is the role of car ABS?

How often should the transmission fluid be changed in a Reiz?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.