2012 Acura MDX Owner's Manual - Page 449

Starting the Engine Your vehicle's starting system has an auto control mode. When you turn the ignition switch to the START (III) position, this feature keeps the engine's starter motor running until the engine starts. Follow these instructions to start the engine: 1. Apply the parking brake. 2. In cold weather, turn off all electrical accessories to reduce the drain on the battery. 3. Make sure the shift lever is in Park. Press on the brake pedal. 4. Without touching the accelerator pedal, turn the ignition switch to the START (III) position, then release the ignition switch. You do not need to hold the ignition switch in the START (III) position to start the engine. Depending on the outside temperature, the starter motor runs for about 6 to 9 seconds until the engine starts. If you hold the ignition switch in the START (III) position for more than 7 seconds, the starter motor, depending on the outside temperature, runs for about 10 to 25 seconds until the engine starts. If the engine does not start, wait at least 10 seconds before trying again. The immobilizer system protects your vehicle from theft. If an improperlycoded key (or other device) is used, the engine's fuel system is disabled. For more information, see page 138. The engine is harder to start in cold weather. Also, the thinner air found at altitudes above 8,000 feet (2,400 meters) adds to this problem. 442