2003 Toyota Sienna Owners Manual - Page 248

03 SIENNA_U (L/O 0207) D A safety chain must always be used between the towing vehicle and the trailer. Leave sufficient slack in the chain for turns. The chain should cross under the trailer tongue to prevent the tongue from dropping to the ground in case it becomes damaged or separated. For correct safety chain procedures, follow the hitch or trailer manufacturer's recommendations. TIRES BREAK−IN SCHEDULE D Ensure that your vehicle's tires are properly sure to pressure 7−2 and inflated. Adjust the tire presthe recommended cold tire indicated below. (See Section Section 8 for instructions.): D Toyota recommends that you do not tow a trailer with a new vehicle or a vehicle with any new power train component (engine, transmission, differential, wheel bearing, etc.) for the first 800 km (500 miles) of driving. MAINTENANCE Tire pressure, kPa (kgf/cm2 or bar, psi) 240 (2.4, 35) D The trailer tires should be inflated to the pressure recommended by the trailer manufacturer in respect to the total trailer weight. TRAILER LIGHTS D If you tow a trailer, your vehicle will require more frequent maintenance due to the additional load. For this information, please refer to the scheduled maintenance information in the "Scheduled Maintenance Guide" or "Owner's Manual Supplement". CAUTION D If the total trailer weight exceeds 453 kg (1000 lb.), trailer brakes are required. D Trailer lights must comply with federal, state/provincial and local regulations. See your local recreational vehicle dealer or rental agency for the correct type of wiring and relays for your trailer. Check for correct operation of the turn signals and stop lights each time you hitch up. Direct splicing may damage your vehicle's electrical system and cause a malfunction of your lights. D Retighten all fixing bolts of the towing ball and bracket after approximately 1000 km (600 miles) of trailer driving. PRE−TOWING SAFETY CHECK D Never tap into your vehicle's hydraulic system as it would lower its braking effectiveness. D Never tow a trailer without using a safety chain securely attached to both the trailer and the vehicle. If damage occurs to the coupling unit or hitch ball, there is danger of the trailer wandering over into another lane. D Check that your vehicle remains level when a loaded or unloaded trailer is hitched. Do not drive if the vehicle has an abnormal nose−up or nose−down condition, and check for improper tongue load, overload, worn suspension or other possible causes. D Make sure the trailer cargo is securely loaded so that it cannot shift. 248 2003 MY SIENNA (OM45410U)