Auto Idle Stop Control by the Climate Control System
When you operate the climate control unit (except the OFF and RECIRCULATION functions), auto idle stop is managed by the climate control system. The climate control unit calculates the enabling/disabling and the allowable time for auto idle stop. This is based on the ECON mode, the battery module temperature, and signals transmitted from several sensors.
When idle stop is enabled, the ECM/PCM sets the allowable time in the idle stop cancellation counter. When the counter reaches zero, the engine restarts.
Turning on the defogger switch or selecting DEF on the mode switch causes the climate control unit to request an engine restart from the ECM/PCM.