Peterbilt Auto Start Stop System Operator’s Manual

To activate the Auto Start Stop system, ensure your truck is in park or neutral with the parking brake engaged. Press the Auto Start Stop button located on the dashboard. The system will activate, allowing the engine to automatically stop and restart under certain conditions.
The system requires the engine to be at normal operating temperature, the battery to be sufficiently charged, and the cabin temperature to be within a comfortable range. Additionally, the vehicle must be stationary with the brake pedal pressed for the system to engage.
The system might not activate if the battery charge is low, the engine is not at the optimal temperature, or if additional loads such as the air conditioning are high. Check these parameters to ensure they are within the required range for the system to operate.
Yes, you can manually disable the system by pressing the Auto Start Stop button on the dashboard. The system will remain off until you reactivate it by pressing the button again.
Regular maintenance includes ensuring the battery is in good condition, the engine is well-maintained, and all related sensors are clean and functioning properly. Follow the manufacturer's recommended service intervals for optimal performance.
Yes, the engine may restart automatically if the system detects a need for power, such as a drop in battery voltage or an increase in cabin temperature requiring air conditioning. This is normal behavior for maintaining vehicle operations and comfort.
If the system fails to restart the engine, check the battery condition and connections. If the problem persists, consult a qualified technician to diagnose potential issues with the starter or related components.
The Auto Start Stop system improves fuel efficiency by reducing idle time, which decreases fuel consumption. By shutting off the engine when the vehicle is stationary, it reduces unnecessary fuel use and emissions.
The system can be used in various weather conditions, but it may deactivate if the battery charge drops due to high power demands from heating or cooling systems. Monitor the system's operation in extreme conditions and ensure the battery is adequately charged.
In urban driving, the system reduces fuel consumption and emissions during frequent stops at traffic lights and congestion. It enhances fuel efficiency and contributes to a reduction in the vehicle's environmental footprint.