See also:

DSTC system
The Dynamic Stability and Traction Control system (DSTC) ...

Setting a warning distance
This setting determines the distance at which the visual and audible warnings are triggered. Select Long, Normal or Short by pressing MY CAR on the center console control panel and going to Settin ...

Changing coolant
Normally, the coolant does not need to be changed. If the system must be drained, consult a trained and qualified Volvo service technician. Do not top off with water only. This reduces the rust- ...