Avoid overload and other abusive operation, More frequent vehicle maintenance is required – Volvo S40 User Manual
Page 107
2003 Volvo S40 & V40
trailer weights exceeding 2000 lbs (908 kg), use only a trailer hitch offered as a Genuine Volvo
Accessory.
Trailer towing does not normally present any particular problems, but take into consideration:
●
Increase tire pressure to recommended full. See section "Wheels and tires".
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Engine and transmission are subject to increased loads. Therefore, engine coolant temperature should
be closely watched when driving in hot climates or hilly terrain. Use a lower gear and turn off the air
conditioner if the temperature gauge pointer enters the red range.
●
Avoid overload and other abusive operation.
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Hauling a trailer affects handling, durability, and fuel economy.
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It is necessary to balance trailer brakes with the towing vehicle brakes to provide a safe stop (check
and observe State/Local regulations).
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Do not connect the trailer's brake system directly to the vehicle's brake system.
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More frequent vehicle maintenance is required.
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Remove the ball and drawbar assembly when the hitch is not being used.
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Volvo recommends the use of synthetic engine oil when towing a trailer over long distances or in
mountainous areas.
NOTE: Refer to section "Automatic transmission" for additional trailer hauling tips.
WARNING!
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Bumper attached trailer hitches must not be used on Volvos, nor should safety chains be attached
to the bumper.
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Trailer hitches attaching to the vehicle rear axle must not be used.
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Never connect a trailer's hydraulic brake system directly to the vehicle brake system, nor a trailer's
lighting system directly to the vehicle lighting system. Consult your nearest authorized Volvo retailer
for correct installation.
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When towing a trailer, the trailer's safety wire must be correctly fastened to the hole or hook
provided in the trailer hitch on the car. The safety wire should never be fastened to or wound around
the drawbar ball.
NOTE: The car is equipped with a transmission oil cooler as standard equipment. This cooler helps
prevent overheating of the transmission during times of increased load, as when towing a trailer.
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