F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
Air Filter Maintenance Indicator: Description and Operation
AIR FILTER RESTRICTION GAUGE
Air Filter Restriction Gauge
An electronic air filter restriction gauge is located in the air cleaner housing. The sensor is hardwired to the instrument cluster. When the air flow in the
intake air system reaches the maximum allowable restriction limit, a switch in the air filter restriction gauge closes and a message is displayed in the
message center of the instrument cluster.
