Gearbox not working properly R and D working after...

Dear sir
Thank you for trusting us
many problems cause transmission fault : 

1. Transmission Fluid Level And Leaks

The most common problem is transmission fluid level check or leak. If you see any liquid red or black in the garage under your vehicle, this could be transmission fluid. Don’t be panic and get your vehicle immediately checked. Auto transmission problems mostly can be avoided by changing the filter and fluid on a timely manner as per manufacturer specification.

2. Slipping Transmission

If you are driving in a certain gear and suddenly, the gear automatically shifts to another one. It also appear unusual sound coming from underneath the vehicle. In some cases, your vehicle suddenly starts falling under powered.

It could be a sign of wear and tear in your transmission line. As terrify as it sounds, you need to get your vehicle checked immediately.

3. Electric Component Failure

Imagine while driving home, you detect damage in vehicle speed sensor or some fuse. Feeling bad, right? Yet it can get even worse, since it could be electric component failure.

Of all automatic transmission problems, this may not allow the Electronic circuits to control the transmission. You will a vehicle which cannot work properly. Sadly, your vehicle must be fixed this issue as soon as possible.

4. Broken Flax Plate

In the list of automatic transmission problems, broken flax plate is the easiest to spot. You can check the flax plate state just by looking.

A broken or damaged flax plate (alternatively called flywheel) will not transferring complete engine power to the transmission.

        5. Gear Shift Lock

Imagine you can only drive on the street in the first gear. Terrible right? In the automatic transmission problems list, gear shift lock is by far the most dangerous. Vehicle goes into the first gear but refuses to shift into another gear. This could be caused by the transmission shift solenoid. It pushes the transmission fluid throughout the system and if it is broken or jammed could result into not transmitting enough power as you drive. When automatic transmission problems shifting gears happens, mechanism might be the best solution. Make sure you know how it works.

6. Transmission Overheat

One of automatic transmission problems that require many attentions is overheating transmission. Especially, if u are owning a Toyota car, this is common issue among Toyota automatic transmission problems,

This usually happens due to burnt, dirty or no fluid. Driver should replace this fluid immediately to avoid further damage to the vehicle. Whenever you feel such issues with transmission, you should bring your vehicle to professional vehicle mechanics.

I hope my answer was helpful, please let me know if you have any follow up questions. If you feel I've answered your question already, please rate my answer from top of the page. Your feedback helps to ensure only the best experts are available to help you.
You can also ask questions of our other specialists in the areas of nutrition, therapists, IT specialists, medical doctors, and many more.
We are privileged to communicate with you, and you can always consult many experts on Jawabkom like Doctors, Nutritionists, and Engineers
Kind Regards
Engineer mohammad