The 2022 Nissan Altima's ProPILOT Assist combines intelligent cruise control with steering assist to help keep the car centered in its lane. When lane centering errors appear, the system has detected a condition preventing proper operation. Understanding ProPILOT helps identify the error source.
ProPILOT Assist System
ProPILOT Assist uses forward radar and camera together with electric power steering to provide lane centering and adaptive cruise control. The system works in single-lane highway driving, maintaining distance from vehicles ahead while helping keep the Altima centered.
What Causes Lane Centering Errors
Several conditions trigger lane centering errors. Camera or radar obstruction from dirt, ice, or fog prevents proper sensing. Poor lane marking visibility challenges lane detection. Vehicle speed outside operating range limits functionality. Sensor hardware faults cause persistent errors. Recent battery disconnect may require sensor reinitialization.
ProPILOT Operating Requirements
ProPILOT requires specific conditions for lane centering. Speed must be within operating range (approximately 32-90 mph). Lane markings must be clearly visible. The driver must maintain hand contact with the steering wheel. All requirements must be met simultaneously.
Error Recovery
Many lane centering errors resolve when conditions improve. Clean sensors, wait for weather to clear, or find roads with better markings. Persistent errors that don't resolve with improved conditions indicate faults requiring diagnosis.