How do you turn off the retarder? It says to push a key but you can't make out what that key is. It looks like a period but that key dosen't help either. Can someone help? Thanks. By default, semicolon (;) turns retarder on, single quote (') turns retarder off. You can reassign the keyboard keys in Options->Keyboard. More specifically: semicolon increases retarder effect, single quote decreases retarder effect. To turn it off via hotkeys, it can take multiple simultaneous presses of ' to accomplish. #4. Check your settings for the retarder increase/decrease keys and hit the decrease key in-game for a few times. As far as I understand, this is a bug. If you press the apostrophe key, it should go away. The retarder is a part of certain transmission configurations. Changes 1.2 Added new dynamic volume system Dynamic Acoustics Effects Added Update 1.48.x Feature A full engine sound set were professionally recorded from a Scania 164L Complete engine RPM spectrum recorded Engine brake and How to deactivate retarder in euro truck simulator 2?Let me give you a brief introduction of who I am, Hey there, I am Delphi, pleased to make your acquainta The retarder uses your transmission to slow the truck down, hence the whirling sound you hear with the retarder engaged. Typically it is used to maintain your speed going down hills to prevent the truck from accelerating to an uncontrollable speed. In real life, you would use your retarder to limit the amount of speed your truck picks up. Thanks. Retarder serve to slow vehicles, or maintain a steady speed on declines, and help prevent the vehicle 'running away' by accelerating down the decline. They are not usually capable of bringing vehicles to a standstill, as their effectiveness diminishes as vehicle speed lowers. They are usually used as an additional 'assistance' to slow A retarder is braking mechanism that uses fluid to evenly distribute braking ability to all wheels on the primary mover/unit/tractor. Only to the driven wheels. Think of the retarder as a load on the back of the transmission, similar in concept to an exercise bike or rowing machine. So I've never driven a "real" European truck, but I cant imagine that they would be so different from American trucks that their retarder control would be located where the trailer brake is located. Every truck I have ever driven has a trailer brake (which is still part of the air brake system) located on the steering column to the right (in the exact location that the retarder control is I use Logitech G29 with gear stick made from the real Scania truck stick. Mostly driving trucks with retarder. At this time my pedál is set as air brake, the +/- buttons on the driving wheel are set as retarder and one of the paddle is set as engine break. I use the engine break slightly decrease the speed or decrease the speed before e.g. s1kpF.