2009 Ford Flex Repair Manual (P/N AA8J-19A321-AB)

For a 2009 Flex in the bay, this English-language PDF set goes well beyond the glove-box literature. It combines 69 Mitchell Repair Information chapters labeled 2009 Ford Flex SE with Ford's U.S.-market 2009 and 2010 Owner's Guides and Scheduled Maintenance Guides. Repair coverage centers on the 2009 3.5L V6 and 6F50 six-speed automatic, with both FWD and AWD systems and option-dependent equipment addressed. For repair work, it is best suited to technicians and experienced owners who can use IDS/VCM-style scan diagnostics, electrical test equipment, and special service tools; the owner literature also supports routine operation and maintenance.

• 3.5L engine: Covers engine removal and installation, in-vehicle repair, complete engine disassembly and reassembly, cylinder heads, pistons, crankshaft, camshafts, valve-clearance checks, VCT/timing-chain service, the oil pump, and cooling, ignition, fuel, and EVAP components.
• Build-specific engine details: Identifies the January 19, 2009 coolant changeover, early/late oil-filter-adapter and pickup-t-tube arrangements, engines with or without oil coolers, and early versus late/replacement RH timing-chain guides.
• 6F50 transmission and AWD: Provides shift and torque-converter road tests, line-pressure and stall-speed diagnosis, solenoid-body identification/strategy download and drive cycle, main-control and speed-sensor service, cooler backflushing, transaxle removal/installation, PTU/ATC fault isolation, and halfshaft and rear-differential repair.
• Brakes, steering, suspension, and tires: Includes ABS/AdvanceTrac DTC and pinpoint testing, HCU and wheel-speed-sensor service, brake bleeding, hydraulic power-steering repair, front/rear suspension and subframe work, alignment checks, wheel/tire diagnosis, and TPMS sensor training.
• Networked electrical systems: Module-specific DTC charts and pinpoint tests cover the PCM, SJB, 4X4 control, PATS, lighting, locks and liftgate, parking aid, and SYNC/APIM audio and navigation. Procedures call out PMI/module configuration, PATS parameter reset, window and roof initialization, and OCS zero-seat-weight testing.
• SRS, HVAC, and body repair: Details SRS depower/repower and post-deployment repair, manual/automatic and auxiliary climate control, refrigerant recovery/evacuation/charging and leak tests, plus body dimensions, material-specific repair precautions, approved sectioning points, weld-bonding, seam sealing, adhesives, and corrosion-protection restoration.

Diagnostic depth and illustrated reference

The 673-page engine-performance pinpoint-test file covers no-start, power/ground/reference-voltage, electronic-throttle, sensor, fuel-delivery, VCT, EVAP, catalyst, and misfire fault isolation. A separate 81-page Reference Values chapter supplies symptom-to-PID selection and typical scan-data/measured-signal tables. Across the set, DTC and symptom charts, connector-pin references, output-state controls, and electrical measurements support diagnosis before parts are replaced.

Useful illustrations include camshaft-holding and timing-chain alignment views; early/late oil-filter-adapter layouts; 6F50 solenoid-body-to-TR, TSS, and OSS internal circuit diagrams; the TXV refrigerant-system diagram and pressure graphs; front-suspension exploded views; and body sectioning, frame-datum, and underbody-dimension drawings. Full System Wiring Diagrams are repeatedly referenced but are not included as separate PDFs; the set instead supplies connector, internal-circuit, measurement, and component-location illustrations.

Named equipment includes Camshaft Holding Tool 303-1248, Active Wheel Speed Sensor Tester 105-R0110, TPMS Activation Tool 204-363, and R-134a Refrigerant Management Machine 023-00181, alongside IDS/VCM scan-tool routines.

Important build notes and scope limits

The engine material separates vehicles built before and on/after January 19, 2009 because the factory coolant changed; mixing the two types reduces corrosion protection. It also warns that incomplete VCT-housing dowel engagement can cause severe engine damage. The 6F50 section distinguishes early-build MERCON V from late-build MERCON LV and warns that fluid or solenoid-strategy mismatches can cause shift problems or transmission damage.

The 6F50 material covers major diagnostics, external and in-vehicle service, and unit removal/installation, but not a full internal transmission overhaul. PTU service is limited to specified seals and the output flange; internal gear, bearing, case, or shaft damage calls for PTU replacement.

The owner guides add oil-life and message-center reset instructions, TPMS, fuse and relay information, towing, AWD operation, keys and security, capacities, and service part-number tables. The 2010 Owner's Guide covers operating and maintenance differences for the base 3.5L and 3.5L EcoBoost, but the workshop chapters remain 2009 3.5L/6F50 material and do not provide 2010 EcoBoost repair procedures.

5,768 PDF pages total - 69 repair chapters: 4,896 pages; 2009 Owner's Guide, 2nd Printing: 378 pages; 2009 Scheduled Maintenance Guide, 2nd Printing: 49 pages; 2010 Owner's Guide, 1st Printing: 397 pages; 2010 Scheduled Maintenance Guide, 2nd Printing: 48 pages.

Airbag, brake, A/C refrigerant, fuel-system, and under-vehicle procedures require the depowering, recovery, fire-prevention, and lifting precautions given in the applicable chapter before repair work begins.