2013 Toyota Sienna Owners Manual - Page 681

2-5. Driving information Positions for towing hitch receiver Hitch receiver pin hole position: 37.3 in. (949.8 mm) Connecting trailer lights Please consult your dealer when installing trailer lights, as incorrect installation may cause damage to the vehicle's lights. Please take care to comply with your state's laws when installing trailer lights. 380 SIENNA_OM_OM45472U_(U)