Translation from the words of the author:

This mod expands (based on the engine) cars with differential locks and drive modes (four-wheel drive, rear / front-wheel drive).

2019-01-08 - V1.5.0.0
+ implemented the function of changing the shuttle (per vehicle). press the assigned key (default: space) to change the direction of movement, and (default: LCTRL + space) to enable / disable the shuttle.
+ vehicle transfer status is saved in the saved game
+ Added display of the shuttle's offset status to the left of the speedMeter. The green arrow indicates the selected direction of travel. If the shuttle change is disabled, the display becomes gray-transparent.
+ Added the global option "shuttleDefaultIsOn" to select whether the shuttle is enabled by default when entering "new" vehicles (default: OFF)
* displaced display of differential state in the lower right corner of speedMeter

Version 1.4.1.0
* redesigned HUD element layout. position should be fixed once and for all, regardless of the screen resolution and scaling of the graphical interface (click “KeyPad /” for the adept)
* workaround (it displays “0”) for attachments without a damage model (without spec_wearable)
* Changed differential behavior for 2WD. this may cause some wobbly side effects on most vehicles, but now it’s more correct

Version 1.4.0.0
* fixed background image overlay warning (png -> dds)
+ config is now stored in the XML file
+ position of HUD elements can be moved or enabled / disabled in the XML file
* rewrote key binding / keystroke
+ Key bindings can now be changed in the settings menu
+ Added reset function and key bindings. use this if you messed up the XML or changed the scale of the GUI
+ if a 'keyboardSteerMogli' mod is detected, we move some elements of the HUD so that they do not overlap
* moved HUD revolutions and temperatures inside the speedometer
* do not display broken HUD elements as a multi-user (and non-host) client

In addition, the HUD will be upgraded with a more detailed report on damage, fuel tank level, fuel consumption, engine speed and temperature, as well as weight / total weight.

keyboard layout (can be changed in the game settings menu)
KeyPad 7 - enable / disable front axle differential lock
KeyPad 8 - enable / disable rear axle differential lock
KeyPad 9 - switching all-wheel drive mode between 4WD (four wheels) or 2WD (two wheels)
KeyPad / - reset the position of the HUD. use this if you messed up the XML configuration, re-scaled the GUI, or installed the Mogli keyboardSteer afterwards. (version 1.4.0.0+ required)

If the "keyboardSteer" mod from Mogli is detected, some HUD elements move slightly to avoid overlapping. Click “KeyPad /” to reset their positions. (version 1.4.0.0+ required)

Please note: due to limitations and errors in the game engine, HUD data on fuel consumption, engine temperature and mass are not available or incorrect for all multiplayer players - with the exception of the host.