Caution: If something is carried on top of the vehicle that is longer or wider than the luggage carrier -- like paneling, plywood, or a mattress-- the wind can catch it while the vehicle is being driven. This can cause a driver to lose control. The item being carried could be violently torn off, and this could cause a collision, and damage the vehicle. Items may be carried inside. Never carry something longer or wider than the luggage carrier on top of the vehicle.
If your vehicle has a luggage carrier, you can load things on top of your vehicle. The luggage carrier has side rails attached to the roof. Your vehicle may also have crossrails. If so, the appropriate tools are also supplied with the vehicle.
Notice: Loading cargo on the luggage carrier that weighs more than 110 lbs (50 kg) or hangs over the rear or sides of the vehicle may damage your vehicle. Load cargo so that it rests on the slats as far forward as possible and against the side rails, making sure to fasten it securely.
Do not load things that are wider or longer than the luggage carrier. The maximum load for the luggage carrier rails is 110 lbs (50 kg) with 1 to 4 persons occupied in the vehicle. Do not exceed the maximum vehicle capacity when loading your vehicle. For more information on vehicle capacity and loading, see "Loading Your Vehicle".
When you carry cargo on the luggage carrier of a proper size and weight, put it on the side rails, as far forward as you can. Then slide the crossrail up against the rear of the load, to help keep it from moving. You can then tie it down. Ensure that the load is evenly distributed over the side or crossrails.
A loaded luggage carrier alters the vehicle's center of gravity. Drive carefully when in crosswinds and do not drive at high speeds.
To prevent damage or loss of cargo as you are driving, check now and then to make sure the luggage carrier and cargo are still securely fastened.