Is the 7G Tronic transmission reliable?

Is the 7G Tronic transmission reliable?

There is a systemic problem with the Mercedes Benz 7G tronic 722.9 transmission control module which causes the vehicle’s transmission to, without notice, fail to shift out of 2nd gear which creates a serious safety hazard while driving including entering the freeway and attempting to merge into traffic.”

How do I reset my 7G Tronic transmission?

Procedure Reset Transmission Adaptive Learning DIY

1. Turn the key to position 2. You should see all the dash lights come on.
2. Press the gas pedal all the way.
3. Wait.
4. Turn key to OFF, position 0.
5. Release the gas pedal.
6. Wait 2 minutes.
7. Start the car and drive.

What does 7G Tronic mean on Mercedes?

seven-speed automatic transmission
7G-Tronic is Mercedes-Benz’s trademark name for its seven-speed automatic transmission, starting off with the W7A 700 and W7A 400 (Wandler-7-Gang-Automatik bis 700 oder 400 Nm Eingangsdrehmoment; converter-7-gear-automatic with 516 or 295 ft·lb maximum input torque; type 722.9) as core models.

Why is my Mercedes not changing gears?

When the transmission is in “limp mode” and the gears cannot shift accurately, the whole gearbox is at fault. If there is an electrical issue, the main causes are likely faulty solenoids, a damaged speed sensor or selector sensor, or potentially even an issue with the transmission module itself.

How do I get my car out of limp mode?

If your vehicle goes in limp mode while driving, find a safe place to stop and restart the engine. Allow the car to stay completely off for at least one minute before you restart it. In many cases, an engine restart will reset the limp mode and allow the vehicle to operate normally.

Why does my automatic car take long to change gears?

Shifting delays are often caused by many things but most commonly due to poor maintenance or high mileage. Transmission fluid, in addition to acting as a coolant, keeps internal seals lubricated to help prevent hardening or wearing out. The first thing to do when you notice a delay is to check your transmission fluid.

Is G Tronic dual clutch?

In the 9G-TRONIC, the individual gears are engaged by three multi-disc clutches and three multi-disc brakes. The purpose of the multi-disc clutches is to transfer the drive torque between two components as a friction connection. The ratio configuration of gears one to nine allows the wide ratio spread of 9.15.

What causes a car not to engage gears?

The first culprit to suspect when your vehicle refuses to go into gear is low transmission fluid. Perhaps your fluid is leaking or low, and that may cause your car problems having a smooth gear transmission. You should be looking out for the level, smell and color of the fluid. If little, try adding some liquid.

What is the problem with the Mercedes 7G tronic transmission?

Mercedes 7G-Tronic – Seven Speed Automatic Gearbox Problem. This is a very common fault for Mercedes vehicles fitted with the 7G-Tronic automatic transmission with gearbox code – 722.9, often causing the transmission to hold too long in one gear before aggressively forcing the next gear into place, this causes a very rough and jerky gear change.

Are there any problems with the 7G Tronic plus?

However much like the previous seven speed conductor plate, the 7G Tronic Plus still comes with its fair share of problems. Commonly when the 7G Tronic Plus conductor plate fails it will cause gears to stick before instigating a harsh gear adjustment causing rough and jerky gear change.

Is the Mercedes 7G Tronic plus a start stop ECU?

Unlike the previous version, this 7G Tronic Plus ECU/TCU is designed to work with start-stop engines. However much like the previous seven speed conductor plate, the 7G Tronic Plus still comes with its fair share of problems.

What’s the difference between Mercedes 722 and 722.9 7G Tronic?

The 7-Speed Mercedes-Benz automatic transmission is known as: One of the main differences between the 722.6 5-Speed and 722.9 7-Speed transmissions is that in the 7G Tronic the Transmission Control Module (TCU) is integrated inside the transmission. The TCU is mounted on top of the valve body.