When it is helpful to activate the differential lock?

The differential lock is a crucial feature for vehicles in specific driving conditions. It is particularly helpful in scenarios where traction is compromised, such as when one or more wheels are spinning due to mud, snow, or ice.

In your answer, the selected options are correct because they both relate to situations where the differential lock would be beneficial.

1. When you become bogged down and individual drive wheels are spinning, activating the differential lock helps transfer power equally to all drive wheels, improving traction and allowing the vehicle to escape the stuck position.

2. When slowly driving straight ahead on slippery road surfaces, engaging the differential lock prevents the wheels from spinning and losing grip, ensuring better control and stability.

However, option 3 is incorrect because using a differential lock while maneuvering on dry road surfaces can potentially lead to handling issues and increase tire wear. In these conditions, it is generally better to keep the differential unlocked for better maneuverability.

Understanding when to use the differential lock is important in ensuring safety and vehicle performance according to German traffic regulations.