2009 Acura MDX Service Manual

The 2009 Acura MDX Service Manual provides comprehensive technical information for maintenance, repair, and service procedures for the 2009 Acura MDX luxury SUV. This manual covers the 3.7L V6 VTEC engine, 5-speed automatic transmission with Sequential SportShift, Super Handling All-Wheel Drive (SH-AWD) system, chassis components, electrical systems, and all major vehicle subsystems. Below are key sections for maintenance schedules, technical specifications, repair procedures, and troubleshooting.

1. Vehicle Specifications 2. Maintenance Schedule 3. Engine System 4. Transmission & Drivetrain 5. Brake System 6. Suspension & Steering 7. Electrical System 8. Heating & A/C 9. Body & Interior 10. Diagnostic Procedures 11. Troubleshooting

Vehicle Specifications

Key technical data for the 2009 Acura MDX including engine, transmission, dimensions, and capacities.

Specification	Description
Engine Type	3.7L SOHC V6 VTEC
Horsepower	300 hp @ 6000 rpm
Torque	275 lb-ft @ 5000 rpm
Transmission	5-speed automatic with SportShift
Drivetrain	Super Handling All-Wheel Drive (SH-AWD)
Fuel Capacity	21.0 gallons
Curb Weight	4,478 lbs
Towing Capacity	5,000 lbs (with accessory towing package)
Wheelbase	108.3 inches
Overall Length	191.6 inches

Maintenance Schedule

Recommended service intervals and maintenance requirements.

Oil and filter change: Every 7,500 miles or 12 months
Tire rotation: Every 7,500 miles
Air filter replacement: Every 30,000 miles
Transmission fluid: Every 30,000 miles
Spark plugs: Every 105,000 miles
Timing belt: Every 105,000 miles
Brake fluid: Every 3 years regardless of mileage

WARNING! Always use genuine Acura parts and fluids for optimal performance and warranty compliance.

Engine System

3.7L V6 VTEC engine service procedures and specifications.

Engine oil capacity: 5.2 quarts with filter
Coolant capacity: 9.2 quarts
Compression ratio: 11.0:1
Fuel system: Sequential multi-port fuel injection
Ignition system: Direct ignition system

CAUTION! Allow engine to cool completely before performing any service procedures.

Transmission & Drivetrain

Transmission Type: 5-speed automatic with Sequential SportShift
Fluid Capacity: 3.5 quarts (drain and refill)
Fluid Type: ATF-Z1 or equivalent
SH-AWD System: Electronically controlled all-wheel drive with torque vectoring
Rear Differential: Requires separate fluid service every 15,000 miles
Transfer Assembly: Integrated with transmission

Brake System

Front and rear brake system specifications and service procedures.

Front Brakes: Ventilated discs, 12.6-inch diameter

Rear Brakes: Solid discs, 13.1-inch diameter

Brake pad replacement: Inspect every 15,000 miles, replace as needed. Brake fluid: DOT 3 or DOT 4. ABS system: 4-channel with electronic brake distribution.

Suspension & Steering

Front: MacPherson strut with coil springs. Rear: Multi-link with coil springs.

Power steering fluid: Honda PSF-S or equivalent
Wheel alignment specifications included in manual
Stabilizer bar diameters: Front 28mm, Rear 20mm
Shock absorber replacement procedures

Tip: Always perform wheel alignment after suspension component replacement.

Electrical System

Battery, charging, starting, and accessory electrical systems.

Battery: 12V, 70Ah (maintenance-free)
Alternator: 150 amp output
Starter: 1.4 kW reduction type
Fuse box locations: Underhood and driver's side dashboard
Lighting system: HID headlights with auto-leveling

WARNING! Disconnect battery negative terminal before performing electrical work.

Heating & A/C

Climate control system service and refrigerant specifications.

Refrigerant: R-134a, Capacity: 1.38 - 1.54 lbs. A/C compressor: Variable displacement. Heater core: Integral with HVAC assembly.

Body & Interior

Body panel replacement, interior trim, and accessory installation.

CAUTION! Use proper trim removal tools to avoid damage to interior components.

Diagnostic Procedures

OBD-II diagnostic trouble code retrieval and interpretation.

Use Honda Diagnostic System (HDS) or compatible OBD-II scanner. Common codes: P0300 (random misfire), P0420 (catalyst efficiency), U0155 (lost communication with instrument panel).

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine misfire	Spark plugs, coils, fuel injectors	Check ignition components; test fuel pressure; scan for codes.
Transmission shifting hard	Fluid level, solenoid issues	Check fluid level and condition; test shift solenoids.
SH-AWD warning light	System fault, sensor issues	Scan for AWD system codes; check wheel speed sensors.
Brake pulsation	Warped rotors	Measure rotor runout; resurface or replace rotors.
A/C not cooling	Refrigerant leak, compressor	Check refrigerant pressure; test compressor clutch.

Reset: Use HDS scanner to clear codes and reset maintenance minder.

Service: Contact Acura dealer or certified technician for complex repairs.