80 INSTRUMENTS AND CONTROLS • Automatic Traction Control Switch/Heavy Mud/Snow – Activate for increased traction control in heavy mud or snow. (See “Automatic Traction Control (ATC) (If Equipped)”, page 160 in the OPERATION section of this manual for more details.) When the operator presses the top of the rocker switch, the heavy mud/snow function ATC indicator lamp blinks continuously. The ATC lamp stops blinking when the ATC mode switch is pressed again or ignition key cycled.
CAUTION Be sure to deactivate the heavy mud/snow function when no longer needed. Continued operation with the heavy mud/snow function active will result in vehicle damage. If after a reasonable amount of time (no more than five minutes) the vehicle is still not moving, deactivate the ATC and put on chains.
• Body Warning Lamp – The Body Lamp illuminates a RED warning icon on the "D" panel to alert the driver of a body function as defined by the bodybuilder. As an example, the body warning lamp will illuminate to alert the driver that the dump body is not fully down.
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• Daytime Running Lights (DRL) Override Switch – Daytime Running Lights (DRL) come standard on all MACK vehicles and can be optioned with or without an override switch. When the DRL override switch has been specified, different conditions can be selected that cause the DRL to automatically activate, DRL can be automatically turned on when the parking brake is released, the engine is running or both. Only one of these choices may be selected. Using DRL will illuminate the low beam headlamp bulbs at a slightly reduced intensity. The DRL function will monitor high beams as well. If the high beams are activated, the DRL will be temporarily turned off until high beam use ceases.
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