Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Steering Pad: Installation
INSTALLATION PROCEDURE 1. INSTALL HORN BUTTON ASSEMBLY (a) Check that the engine switch (for Gasoline Model) or power switch (for HV Model) is off. (b) Check that the cable is disconnected from the negative (-) auxiliary battery terminal. CAUTION: Wait at least 90 seconds after disconnecting the cab ...