Severe strain on the brake system

The brakes will be subject to severe strain when driving in mountains or hilly areas, or when towing a trailer. Vehicle speed is usually slower, which means that the cooling of the brakes is less efficient than when driving on level roads. To reduce the strain on the brakes, shift into a lower gear and let the engine help with the braking. Do not forget that if you are towing a trailer, the brakes will be subjected to a greater than normal load.
See also:
Situations where ACC may not function optimally
WARNING
The radar sensor has a limited field of vision. In some situations it may
detect a vehicle later than expected or not detect other vehicles at all.
If ACC is not functioning prop ...
Cleaning the sensors
Location of the front sensors
Location of the rear sensors
The sensors must be cleaned regularly to ensure that they work properly. Clean
them with water and a suitable car washing detergent. ...
Volvo programs
Volvo On Call Roadside Assistance
Your new Volvo comes with a four year ON CALL roadside assistance. Additional
information, features, and benefits are described in a separate information package
...
