2011 Toyota Avalon Owners Manual - Page 186

2-1. Driving procedures n If the S indicator does not come on even after shifting the shift lever to S mode driving position This may indicate a malfunction in the automatic transmission system. Have the vehicle inspected by your Toyota dealer immediately. (In this situation, the transmission will operate in the same manner as when the shift lever is in D.) n AI-SHIFT AI-SHIFT automatically selects the suitable gear according to driver performance and driving conditions. AI-SHIFT automatically operates when the shift lever is in the D position. (Shifting the shift lever to the S mode driving position cancels the function.) 160 AVALON_U (OM41428U)