Dual front airbags, front side-impact airbags, crumple zones, reinforced body structure, front seat belt pre-tensioners.
💡 Technology Features
Infotainment
Infotainment Features:
Standard AM/FM/CD player, optional premium audio systems (e.g., Infinity), available navigation system on higher trims.
Driver Assistance
Driver Assistance Features:
Traction Control System (TCL), optional Active Stability Control (ASC) on some AWD models.
Connectivity
Connectivity Features:
N/A (Limited to basic audio and communication features, no Bluetooth or USB for 2004 models).
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 3,750 miles or 6 months, whichever comes first (for conventional oil). Use synthetic for extended intervals per manual recommendations.
Engine Coolant Flush:
Every 30,000 miles or 3 years.
Transmission Fluid Change:
Every 30,000 miles or 3 years (recommended for regular service, severe service may require more frequent changes).
Spark Plug Replacement:
Every 60,000 miles (Platinum or Iridium plugs).
Fluid Specifications
Engine Oil Spec:
API SJ or higher, ILSAC GF-2 or higher, SAE 5W-30 recommended. Check manual for exact specifications.
Transmission Fluid Spec:
Diamond ATF SP-III (or equivalent).
Coolant Spec:
Mitsubishi Super Long Life Coolant (MS-97641) or equivalent ethylene glycol-based coolant with appropriate corrosion inhibitors.
Known Issues
Common Problems Engine:
Oil leaks from valve cover gaskets and rear main seal, intake manifold gasket leaks, occasional idle control issues.
Common Problems Transmission:
Hesitation or rough shifting can sometimes indicate TCM issues or fluid degradation. Torque converter shudder may occur.
Common Problems Suspension:
Worn strut mounts, control arm bushings, and ball joints can lead to noise and poor handling.
Common Problems Electrical:
Window motor failures, power lock actuator issues, intermittent HVAC blower problems.
Part Numbers
Oil Filter Example:
Mitsubishi MD095777 or equivalent (e.g., Wix 51515, Fram PH16).
📚 Vehicle History
Brand Heritage
Brand Focus:
Mitsubishi is known for its engineering prowess, particularly in areas like turbocharged engines, rally racing, and innovative drivetrain technologies.
Model Evolution
Third Gen Evolution:
The third generation Diamante (1997-2005) received a facelift for 2001, with updated styling, interior refinements, and powertrain improvements, including the introduction of the 3.8L V6.
Production
Production Location:
Japan (Okazaki Plant)
Production Years:
1991-2005 (Global production for all generations)
🏆 Awards & Recognition
Recognitions
Awards And Ratings:
The Diamante often received positive reviews for its comfort, quiet ride, and available AWD system, though it faced strong competition in the luxury sedan segment.