58 INSTRUMENTS AND CONTROLS 14. Engine Shutdown Indicator (Red) – Indicates the occurrence of a condition which requires that the engine be shut down (i.e., low water level, low oil pressure or high water temperature). If the engine shutdown feature is enabled, the engine will be forced to idle. Once vehicle is stopped, the engine will shut down. If the engine shutdown feature is disabled, the indicator will function as a warning light but the engine will not shut down. 15. Air Suspension Low Indicator (Amber) (with air suspension only) – Icon illuminated when air suspension lowered to warn driver not to drive in this condition. 16. Anti-Lock Brake System (ABS) Indicator (Amber) – Indicates an ABS malfunction. If the light turns on and stays on, a malfunction is indicated. For additional information on operating an ABS-equipped vehicle, refer to “Anti-Lock Brake System (ABS)”, page 155, of the OPERATION section. Note: When an ABS malfunction is detected, anti-lock braking in the affected wheel(s) will be disabled and normal braking will return; the other wheels will retain anti-lock braking. Operate the vehicle normally and have the ABS system serviced to correct the fault. 17. Low Coolant Level Indicator (Amber) – Illuminates when the coolant level in the coolant surge tank is below the specified level. Stop and add coolant. Use typical warnings, etc., for filling coolant. 18. Coolant Temperature Gauge – Indicates the temperature of the engine coolant. The normal operating temperature for MACK engines is between 77°C and 107°C (170°F and 225°F). The driver will receive a warning if coolant temperature reaches 223°F and engine shutdown will occur at 227°F if the engine coolant temperature shut down option is enabled.
CAUTION Coolant temperature must NOT exceed 107°C (225°F).
