Power brakes function only when the engine is running

The power brakes utilize vacuum pressure which is only created when the engine is running. Never let the vehicle roll to a stop with the engine switched off.
If the power brakes are not working, considerably higher pressure will be required on the brake pedal to compensate for the lack of power assistance. This can happen for example when towing your vehicle or if the engine is switched off when the vehicle is rolling. The brake pedal feels harder than usual.
See also:
Battery
• Ensure that the battery cables are correctly
connected and tightened.
• Never disconnect the battery when the
engine is running (e.g., when replacing the
battery).
• Never use a fast charger to ...
Introduction
Center console control panel
1 Volvo Navigation System (VNS)* – NAV:
see the separate VNS manual for operating
instructions.
2 Infotainment (RADIO, MEDIA, TEL*): see
the infotainment system o ...
Brake lights and taillights
The brake lights and taillights are replaced from
inside the cargo area.
NOTE
Before starting to replace a bulb, see
page 322.
1. Open the panel.
2. Remove the bulb holder by turning it coun ...
