2008 Volvo S40 Owner's Manual - Page 189

Driving habits and conditions, climate, the number of starts, etc., all affect the service life and function of the battery. In order for your battery to perform satisfactorily, keep the following in mind: Check the fluid level in each cell in the battery every 24 months or every 15,0001 miles (24,000 km), whichever is sooner. The fluid should be at the level shown in the illustrations above (A). Do not overfill. 1 More frequently in warm climates. Use a screw driver to open the caps or cover and a flashlight to inspect the level. If necessary, add distilled water. The level should never be above the indicator (A). The fluid level should be checked if the battery has been recharged. After inspection, be sure the cap over each battery cell or the cover is securely in place. Check that the battery cables are correctly connected and properly tightened. Never disconnect the battery when the engine is running, or when the key is in the ignition. This could damage the vehicle's electrical system. The battery should be disconnected from the vehicle when a battery charger is used directly on the battery. WARNING PROPOSITION 65 WARNING! Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the state of California to cause cancer and reproductive harm. Wash hands after handling. 210 09 Maintenance and servicing