Diff Lock Indicator Lamp Flashes While Driving: Description
WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
The DIFF LOCK indicator lamp will flash once every 2 seconds when the differential lock system is in standby condition. Standby condition is the time between when the differential lock mode switch is turned ON and when the differential lock control unit "sees" all conditions are met to engage the differential lock. The DIFF LOCK indicator lamp should be OFF if there has been a fault detected. For more information regarding the differential lock system operation, refer to the Owner's Manual.