What actions should be taken when the temperature is below 32 degrees?

In cold weather situations where the temperature is below 32 degrees Fahrenheit, it's important to take specific actions to ensure the optimal performance and safety of the vehicle.

Utilizing high idle allows the engine to warm up more efficiently, which is crucial in cold temperatures to prevent potential damage and ensure that the vehicle is operating smoothly. This helps in maintaining engine lubrication and reduces wear during initial operation when the engine oil may be thicker and less effective at lower temperatures.

Shutting off the Central Tire Inflation System (CTIS) in these conditions is also a recommended action. Cold temperatures can affect tire pressures, and the system may not function as intended, potentially leading to under or over-inflation. By turning off CTIS, you eliminate the risk of unreliable tire pressure adjustments in conditions where traction is critical.

Thus, combining both actions—utilizing high idle for engine readiness and shutting off CTIS to prevent issues with tire inflation—ensures that the vehicle operates efficiently and safely in colder weather. This comprehensive approach is important to consider for maximum reliability and readiness in harsh conditions.