Voltage-Based Auto High Idle
Note: To operate the high idle options listed below, the vehicle must be stopped, the transmission shift lever placed in the Neutral (N) or Park (P) position, and the parking brake set.
Important: Do not idle the engine for excessively long periods. The extreme heat can cause the bearings to seize or the oil seals to leak.
- Place the shift lever in Neutral (N) or Park (P) and set the parking brake.
- The idle rpm will automatically increase when the voltage drops below 12.2 volts. The rpm will incrementally increase every five seconds until 13.4 volts is achieved and maintained.
- The Voltage-Based Auto High Idle system is disengaged by
depressing the service brake pedal.
Important: The Voltage-Based Auto High Idle system will not return to normal operation until one of the following occurs: The parking brake is depressed and released, the key switch is turned to the OFF position, or the transmission gears are changed.