1998 Toyota Sienna Owners Manual - Page 110
1998 Toyota Sienna Manual
Page 110 highlights
name. SIENNA (U) 6. Vehicles with a power sliding door: Open the right side sliding door. The open power sliding door warning light should come on. Close the right side sliding door. The open power sliding door warning light should go off. If any service reminder indicator or warning buzzer does not function as described above, either the bulb is burned out or the circuit is in need of repair. Have it checked by your Toyota dealer as soon as possible. 110