There is a problem with the automatic gearbox of a 2002 C 240 Estate vehicle.

[vitessear3]

Could someone provide an explanation for the possible reason for the abrupt loss of both forward and reverse drive in my gearbox?
The automobile is free from any leaks. It had a filter and oil change two years ago, and a brand new Gearshifter was installed in August of last year.
The vehicle will continue to operate until the oil temperature reaches a high level, at which point it will need to cool down. I have not yet performed a complete diagnostic using the Merc Star system.
Upon the original failure on the Isle of Sheppey, there was a distinct 'Whirring sound' experienced when accelerating, which subsequently resulted in a loss of propulsion and necessitated a contact to the RAC.

[BENZE220AMG]

What is the mileage of the vehicle? Is it possible for the torque converter (T/C) to malfunction when the automatic gearbox fluid (ATF) reaches high temperatures or for the lock-up clutch to slide when subjected to heavy loads?

To resolve the issue, it is necessary to connect the device. I am aware that the MB IcarSoft 2 has the capability to monitor the functioning of the lock up clutch while the vehicle is in motion.

What is the model of the C class car from 2002? Based on my deduction, it seems to be a 722.6 gearbox.

[vitessear3]

Yes, I believe that is the first artificial intelligence, and we may go from that point. There is a firm located in Epsom (DDR) that specialises in MB Gearboxes. The automobile will be sent to their facility to have the STAR Diagnostics reading performed.
The total mileage on the vehicle is 104,776 miles. I am certain that you are correct on the 722.6 gearbox, since the RAC representative did mention it to me.
I have a Mercedes Brooklands Surrey dealership located about 5 minutes away from me. However, I am really interested in preserving both my arms and legs for a considerable amount of time.

[BENZE220AMG]

It is your decision, however you do not need a specialist just for the 'Mercedes gearbox', since the 722.6 gearbox is used in other cars, including Chryslers (such as the Crossfire in the UK). Any reputable gearbox shop should be capable of handling it.

The device is very resilient with just a few, but well-documented, flaws. One peculiar flaw is the migration of fluid from the TCU plug to the TCM, caused by an internal leakage. Fortunately, the TCU plug is inexpensive to repair. If you own a small assortment of manual tools, you may easily do a do-it-yourself inspection of the vehicle while it remains on the ground.

    Remove the carpet from the floor area in the front passenger compartment.
    Detach the footplate by loosening the screws, which are about 4 x 6mm in size.
    Disconnect the TCU (Transmission Control Unit) and carefully inspect for the presence of oil that is not supposed to be there.
    Is there a lack of oil? The TCU is not responsible for the leak.

In a right-hand drive (RHD) automobile, it is done like this.

[BENZE220AMG]

[BENZE220AMG]

This is the electrical socket.

Additionally, I would like to mention that my 2006 C class vehicle is equipped with a similar gearbox, but with modest modifications to accommodate its specific requirements. This gearbox has successfully endured over 150,000 miles, effectively handling the challenges posed by the powerful 5.4 V8 AMG engine. I encourage you to be patient and resilient in your situation.

[colinallcars]

Inspect the amount of fluid in the gearbox by purchasing a dipstick.
It is inspected while it is at a high temperature. After a 30-minute trip, the engine is idling on a level surface, with the transmission in park.
As mentioned before, it is advisable to have the gearbox plug replaced anyway.