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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 ...

Changing
WARNING Connect and disconnect the positive and negative cables in the correct sequence. ...

Heated oxygen sensors
The heated oxygen sensors monitor the oxygen content of the exhaust gases. Readings are fed into a control module that continuously monitors engine functions and controls fuel injection. The ratio ...