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:
Horn
Horn
Press the steering wheel hub to sound the horn. ...
Accessory installation
We strongly recommend that Volvo owners install only genuine, Volvo-approved
accessories, and that accessory installations be performed only by a trained
and qualified Volvo service technicia ...
Detachable trailer hitch (accessory)
Detachable trailer hitch (accessory)
a Ball holder
b Locking bolt
c Cotter pin
d Hitch assembly
e Safety wire attachment ...
