2004 Lexus RX 330 Owners Manual - Page 554

DRIVING TIPS Weight limits Before towing, make sure the total trailer weight, gross vehicle weight, gross axle weight and trailer tongue load are all within the limits. The total trailer weight and tongue load can be measured with platform scales found at a highway weighing station, building supply company, trucking company, junk yard, etc. CAUTION D The total trailer weight (trailer weight plus its cargo load) must not exceed the following. Exceeding this weight is dangerous. Without towing package 907 kg (2000 lb.) With towing package 1588 kg (3500 lb.) D If towing a trailer and cargo weighing over 907 kg (2000 lb.), Lexus recommends to use a sway control device with sufficient capacity. The gross combination weight (sum of your vehicle weight plus its load and the total trailer weight) must not exceed the following. Without towing package 3286 kg (7245 lb.) With towing package 3966 kg (8745 lb.) D Trailer hitch assemblies have different weight capacities established by the hitch manufacturer. Even though the vehicle may be physically capable of towing a higher weight, the operator must determine the maximum weight rating of the particular hitch assembly and never exceed the maximum weight rating specified for the trailer hitch. Exceeding the maximum weight rating set by the trailer hitch manufacturer can cause an accident resulting in serious personal injuries. " Certification label 531