ISSUE Some 2005-2006 Expedition and Navigator vehicles may exhibit water leaking on to the passenger floor from the A/C plenum drain tube area. ACTION Refer to the following Service Procedure to determine if the water leak is from the air conditioning drain tube and repair as necessary. SERVICE PROCEDURE 1. Turn off air suspension, if equipped. 2. Verify the leak is from the HVAC case drain seal and not from another source. Pull back the carpet on the passenger floorboard and feel the HVAC drain tube seal for water (Figure 1A-1B). a. If signs of water or moisture are present continue on with the TSB. b. If there are no signs of water or moisture at the drain tube seal, follow normal diagnosis and repair procedures.
3. Expedition only: Open hood and remove transmission dip stick. 4. Navigator only: Use Message Center to position running boards in the extended position (out setting). Refer to Owners Guide, drivers control section for more information. 5. Remove the right front wheel following Workshop Manual, Section 204-04 procedure. 6. Remove right front fender splash shield. 7. Expedition only: Remove transmission dipstick tube from vehicle. 8. Pull back the engine compartment dash panel insulator far enough to expose the HVAC drain tube (Figure 2B) by removing the push pin to the right of the drain (Figure 2A). Figure 3 – Article 05-20-7 10. Re-seat the engine compartment dash panel insulator and replace the push pin. 11. Expedition only: Install transmission dipstick and tube. 12. Verify the repair by ensuring condensation is dripping outside the vehicle and not running inside onto the passenger floorboard. 13. Replace the right front fender splash shield and wheel. 14. Turn air suspension back on, if equipped.Related Entry : 2006 silverado 1500 suspension diagram, 2006 chevy silverado 1500 front suspension diagram, 1999 ford expedition fender removal, problems repairing axle seals front diff 2007 expedition, a/c drain tube location 2006 navigator, 2012 focus leaking water front and back passenger floor, 2007 ford expedition front axle, 2006 ford f150 condensation build up, 2006 chevy silverado suspension diagram, remove rear seat in 2006 tiburon,