See also:

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, co ...

Comfort and convenience
While the interior of the Volvo S40 places an emphasis on style, form has not been allowed to take precedence over function. The fascia ergonomics have been carefully designed and drivers will fin ...

Temporary shut-off of the air conditioning
The air conditioning is momentarily disengaged during full-throttle acceleration or when driving uphill with a trailer. This may result in a temporary increase in cabin temperature. ...