Volvo S40 - Manual (Page 96)

2003 Volvo S40 & V40
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Pull off the road, away from traffic, stop the car and put the gear lever into neutral. Do not stop the
engine immediately! Let the engine idle.
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Switch the heater to full (maximum) position. Increase the engine speed to approx. 2000 rpm (twice
idling speed) until the temperature begins to drop.
See "Coolant" to check and top-up the coolant level if necessary.
CAUTION: Drive slowly and carefully if going through standing water (i.e. flooded roadways, etc.).
Damage to engine could result if excess water is ingested through the air intake system.
Never drive the vehicle in water deeper than 1 foot (300 mm). See flood warning on
page 8 .
pg. 69 Points to remember
Electrical system
When replacing the battery or when carrying out work involving the electrical system, the following
should be observed:
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A battery connection to the wrong terminal will damage the electrical system. Before connections are
made, check the polarity of the battery with a voltmeter.
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If booster batteries are used for starting, they must be properly connected to minimize the risk of the
electrical system being damaged. For correct connection, see "Jump starting" section.
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Never disconnect the battery circuit (for example, to replace the battery) while the engine is running
or the ignition is switched on, as this will immediately ruin the generator. Always make sure that all the
battery connections are properly tightened.
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If any electrical welding work is performed on the vehicle, the battery's ground lead (negative cable)
and all the connecting cables of the generator must be disconnected and the welder cables placed as near
the welding points as possible.
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The radio must be turned off before the battery is disconnected.
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The anti-theft code must be re-entered before the radio will function properly.
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The electrical system in your car is designed to accommodate Volvo accessories.
Three-way catalytic converter
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Keep your engine properly tuned. Certain engine malfunctions, particularly involving the electrical,
fuel or distributor ignition systems, may cause unusually high three-way catalytic converter
temperatures. Do not continue to operate your vehicle if you detect engine misfire, noticeable loss of
power or other unusual operating conditions, such as engine overheating or backfiring. A properly
tuned engine will help avoid malfunctions that could damage the three-way catalytic converter.
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Do not park your car over combustible materials, such as grass or leaves, which can come into contact
with the hot exhaust system and cause such materials to ignite under certain wind and weather
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