See also:

Deactivating HDC
Press the button again and the LED goes out. HDC is automatically deactivated above approx. 37 mph/60 km/h. ...

Mounts for the lower LATCH anchors
Correctly engage the lower LATCH anchors Make sure that the lower LATCH anchors have properly engaged and that the child restraint fixing system is resting snugly against the backrest; oth ...

Automatic deactivation during forward travel
The system switches off when a certain driving distance or speed is exceeded. Switch the system back on if necessary. ...