How Do I Reset The Mercedes Actros Gearbox?

The Mercedes-Benz Actros is a heavy-duty truck that was introduced by Mercedes-Benz as a replacement for the SK at the 1996 Commercial Vehicle IAA in Hanover, Germany. Long-distance hauling, heavy-duty distribution hauling, and construction hauling are all common applications.

It is powered by an inline-6 diesel engine with turbocharger and intercooler and comes in weights starting at 18 tonnes. In 2002, Daimler Trucks/Lorries introduced the Actros version II, followed by the Actros version III in 2007. In July 2011, the fourth generation of the Actros, dubbed "the New Actros," debuted.

Despite their reputation for excellence, even Mercedes-Benz Actros can falter in some areas. Gear selector problems are one of the issues that Mercedes-Benz Actros owners may encounter.

Table Of Content

1. How The Mercedes Actros Gearbox Works
2. Types Of Problems With The Mercedes Actros Gearbox
3. Mercedes Actros Gearbox Reset Procedure
4. How to Deal With Mercedes Actros Gear Shifting Issues
5. How to Deal with a Faulty Gearbox
6. Conclusion

1. How The Mercedes Actros Gearbox Works

Five different 16-speed gearboxes provide power transmission, each designed to perfectly match the engine output and provide excellent gradability and low maneuvering speeds. They ensure that the engine output reaches the wheels with the least amount of power loss possible when used in conjunction with application-specific drive axles.

A small lever mounted under the right armrest and a flat switch underneath make up the system. When the driver's hand is on the armrest, the lever is slightly tilted to match the natural curve of the driver's hand. On each side of the lever are two buttons.

When the vehicle comes to a halt, the driver must press the right button, then push the lever forward (while holding it) and release it to select fourth fast. On the main display, the current gear is displayed as a large number.

After that, the driver presses down on the clutch pedal and waits about two seconds. A double click is heard through the speakers after the gearshift is complete, and the driver proceeds to pull off as usual.

When the vehicle is moving, the driver has two options. He or she can use the splitter switch (the small switch under the lever) to pre-select gears or push or pull the lever to let the computer choose the gear for them.

In either case, the gear is chosen first, followed by the clutch depressing. Pulling the splitter switch up once, for example, pre-selects the fifth slow if you're in the fourth fast.

To switch to neutral, press the left button (also known as the 'flush button' because it is flush with the lever).

2. Types Of Problems With The Mercedes Actros Gearbox

Some gear selector problems are caused by poor maintenance or upkeep, but they can also be caused by malfunctions or factory faults. Incorrect transmission oil levels, a faulty primary pump, water in the system, oil slippage, and other malfunctioning parts are examples of these issues.

The transmission enters "limp mode" as a result, preventing the transmission gears from shifting properly. Instead, they automatically shift to the next available gear, which is usually second or third. Even though it's a self-protection system designed to keep the transmission from further damage, it can cause damage if used for too long.

3. Mercedes Actros Gearbox Reset Procedure

Resetting the gearbox in the Mercedes Actros is simple and takes about 5 to 8 minutes. The very first thing you must do is:

1. Get inside by opening the driver's side door.
2. Make sure the ignition is set to "2." When you do this, all of the lights on your dashboard should turn on at the same time.
3. Grasp the floorboard with your gas pedal. The kick switch is then activated.
4. For 8 to 10 seconds, keep the gas pedal pressed down
5. Remove the ignition key from the ignition but do not remove it from the ignition.
6. Remove your foot from the pedal slowly.
7. Allow for a two-minute period of time to pass.
8. You should now be able to start the engine with an already reset gearbox.

The communication between the throttle body and the transmission is reset as a result of this. If it doesn't, you're approaching 50k miles when the transmission needs to be serviced, which means the fluid and filter need to be replaced.

4. How To Deal With Mercedes Actros Gear Shifting Issues

First, because this is an automatic gear system, check the colour of the transmission fluid to begin the diagnosis. It should be dark red, but if it is black, it must be replaced along with the oil filter.

After that, while the gearbox is still warm, check the level. After moving the selector through all the gear positions, make sure it stays in each for at least a few seconds before returning to the "Park" position.

If necessary, the dipstick tube can be used to fill the box. Make sure you're using the right oil. This is especially important on the Mercedes Actros because car fluids differ. Some producers, on the other hand, may advise switching fluid types.

Confirm the information on the updated fluid to be used with your local dealer or parts department. If an examination of these reveals that this aspect is in good working order, the gearbox's electrical connections should be examined. Contact cleaner should be sprayed on each connector.

5. How To Deal With A Faulty Gearbox

The entire gearbox is at fault when the transmission is in "limp mode" and the gears cannot shift accurately. Because the cause is difficult to determine on your own, it's usually necessary to take the car to an authorized dealer or mechanic. Advanced computer equipment can run a diagnostic and determine the root of the problem, as well as the best course of action for resolving it.

If an electrical problem exists, it is most likely due to faulty solenoids, a damaged speed sensor or selector sensor, or even a problem with the transmission module itself. Voltage overload, water in the system, thermal stress, or general vibrations can all cause damage to these modules.

If the module is the issue, replacing it can be a costly and time-consuming process. When the transmission is damaged, it must be replaced entirely (which can be very costly) or repaired extensively. However, depending on the problem, a smaller issue may exist, and a control unit replacement may be necessary.

6. Conclusion

Internal-combustion engines operate at high speeds, necessitating a reduction in gearing to transfer power to the drive wheels, which rotate at a much slower rate.

The gearbox has a variety of ratios for varied driving situations, such as starting from a standstill, climbing a hill, or cruising on flat ground. The slower the road wheels turn with respect to the engine speed, the lower the gear.