Changing The Battery - Volvo S40 Owner's Manual

Maintenance and service
Battery

Changing the battery

Removing the battery:
– Switch off the ignition and remove the
key.
– Unscrew the cover over the battery.
– Wait at least 5 minutes before touching
any electrical terminals. This allows time
for the information in the car's electrical
system to be stored in the control
modules.
– Remove the lid and unscrew the front wall
of the battery box using a screwdriver.
– Disconnect the negative battery lead.
– Release the clamp securing the battery.
– Disconnect the positive battery lead.
– Remove the battery.
Fitting the battery:
– Fit the battery into position.
– Connect the positive lead.
– Fit the clamp securing the battery.
– Connect the negative lead.
– Refit the front wall of the battery box and
the lid.
– Refit the cover over the battery.
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WARNING!
Batteries can generate oxyhydrogen gas,
which is highly explosive. A spark, which
can be generated if you connect the jump
leads incorrectly, is sufficient to make the
battery explode. The battery also contains
sulphuric acid, which can cause serious
burns. If the acid comes into contact with
eyes, skin or clothing, flush with large
quantities of water. If acid splashes into
the eyes, seek medical advice immedi-
ately.