Replacement of the Battery-Powered HVAC System (BPHS) Air Filter

P4 MM 83.02.003; 5th Generation Cascadia MM

The BPHS air filter is located on the inboard side of the blower fan housing, under the cabinet, directly behind the driver's seat.

    Important: When replacing the air filter, use only a Freightliner-approved air filter.
  1. Park the vehicle on a level surface, set the parking brake, and shut down the engine. Chock the tires.
  2. Remove the sleeper HVAC access panel on the inboard side of the cabinet. See Fig. . The panel is held in place with four spring clips. Pull straight out to remove it.

    Fig. 1, Sleeper HVAC Access Panel, 60- and 72-inch Sleepers

  3. Pull the filter out of the slot. See Fig. .

    1. Filter

    Fig. 2, Removing the BPHS Filter

  4. Install a new filter, making sure that it is completely seated.
  5. Install the access panel.
Note:
Parent topic: Replacement of the Air Filter
Document Number: 0000103391
Manual Publication Date: 2025-07-14
Topic Publication Date: 2026-05-06