The 2003 Acura MDX Service Manual provides comprehensive technical information for servicing and maintaining the Acura MDX luxury SUV. This manual covers the 3.5L V6 VTEC engine, 5-speed automatic transmission, Vehicle Stability Assist (VSA), 4-wheel drive system, electrical systems, suspension, brakes, heating and air conditioning, body components, and troubleshooting procedures. Below are key sections for maintenance, repair procedures, specifications, and diagnostic information.
Vehicle identification, model overview, maintenance schedules, and safety precautions.
| Component | Description |
|---|---|
| Model Year | 2003 |
| Vehicle Type | Mid-size Luxury SUV |
| Engine | 3.5L V6 VTEC |
| Transmission | 5-speed automatic |
| Drivetrain | 4-wheel drive with VTM-4 |
| VIN Location | Driver's side dashboard |
| Production Date | 2002-2003 |
| Warranty Period | 4 years/50,000 miles |
Scheduled maintenance intervals and procedures.
WARNING! Always use genuine Acura parts and fluids. Follow torque specifications precisely.
3.5L J35A4 VTEC V6 engine service procedures.
Specifications: Displacement: 3,471cc • Horsepower: 260 hp @ 5,750 rpm • Torque: 250 lb-ft @ 3,500 rpm • Compression ratio: 10.0:1
5-speed automatic transmission with SportShift.
Service procedures include fluid changes, solenoid replacement, and shift cable adjustment.
Front double wishbone and rear multi-link suspension system.
Front Suspension: Double wishbone with coil springs • Stabilizer bar diameter: 28mm
Rear Suspension: Multi-link with trailing arms • Stabilizer bar diameter: 18mm
Steering: Power-assisted rack and pinion • Turning circle: 38.1 feet
Alignment specifications: Front toe: 0° ± 0.08° • Rear toe: 0.08° ± 0.08° • Camber: -0°30' ± 0°45'
4-wheel disc brakes with ABS and Vehicle Stability Assist.
Tip: Always bleed brakes starting from the wheel farthest from master cylinder.
12-volt electrical system with multiplex control.
| Component | Specification |
|---|---|
| Battery | 12V, 55Ah |
| Alternator | 110A output |
| Starter | 1.4 kW |
| Fuse Boxes | Under-hood and driver's side |
| Relays | Main, fuel pump, A/C compressor |
Wiring diagrams, connector locations, and circuit descriptions included.
Automatic climate control system with rear A/C.
Refrigerant: R-134a • Capacity: 1.54 lbs (700g)
CAUTION! Recover refrigerant using approved equipment only.
Body repair procedures and interior component service.
Procedures for door panel removal, seat service, and trim repair.
Complete technical specifications for 2003 Acura MDX.
| Category | Specification |
|---|---|
| Engine Code | J35A4 |
| Displacement | 3.5L (3,471cc) |
| Fuel System | Programmed Fuel Injection (PGM-FI) |
| Fuel Tank Capacity | 19.2 gallons |
| EPA Mileage | 16 city / 21 highway |
| Wheelbase | 106.3 inches |
| Tire Size | P235/65R17 |
| Oil Capacity | 4.5 quarts (with filter) |
Common issues and diagnostic procedures.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Battery, starter, fuel pump | Check battery voltage; test starter; listen for fuel pump prime |
| Transmission slips | Low fluid, worn clutches | Check fluid level and condition; pressure test |
| ABS light on | Wheel sensors, modulator | Scan for codes; check sensor gaps and wiring |
| A/C not cooling | Refrigerant leak, compressor | Check pressures; leak test; compressor clutch engagement |
| VSA light illuminated | Steering angle sensor, yaw rate | Perform VSA system calibration; check sensor inputs |
Diagnostic Tools: Honda Diagnostic System (HDS) or equivalent scanner required for advanced diagnostics.
Service Support: Contact Acura dealer service department for technical assistance.