The Mitsubishi Pajero automatic represents a defining chapter in the evolution of rugged, all-terrain four-wheel drives. While purists initially clung to manual gearboxes for serious trail work, the pairing of Mitsubishi's robust automatic transmissions with the legendary Super Select 4WD system changed how drivers tackled long-distance expeditions and technical obstacles. Across multiple generations, this vehicle carved out a reputation as a durable globetrotter that could cross harsh terrain without punishing its occupants on the highway.
Understanding why this combination earned such a devoted global following requires looking closely at how its mechanical layout matured. From early four-speed units to sophisticated five-speed sports-mode gearboxes paired with high-torque diesel and petrol engines, the automatic Pajero balanced everyday usability with genuine off-road capability.
Evolution of the Automatic Drivetrain
Early iterations of four-wheel drives often forced a stark compromise between rugged mechanical simplicity and daily driving comfort. Mitsubishi addressed this gap by refining automatic gearboxes to handle heavy towing and extreme heat loads without cooking the transmission fluid.
The introduction of the Super Select 4WD system was a watershed moment. Unlike traditional part-time systems that required stopping to engage four-wheel drive, Super Select allowed drivers to shift between two-wheel drive and four-wheel drive high range at speeds up to 100 km/h. When paired with an automatic transmission, this meant seamless power delivery across changing road surfaces, from slick tarmac to loose gravel.
As generations progressed, the mechanical architecture shifted significantly:
- Second Generation (V20 Series): Integrated electronically controlled four-speed automatic transmissions alongside the advanced Super Select layout, improving fuel management and reducing gear-hunting on steep inclines.
- Third and Fourth Generations (V60 to V90 Series): Moved to a rigid monocoque body with a built-in ladder frame. These models introduced five-speed automatic units with manual shift modes, giving drivers precise control over engine braking during technical descents.
For official specifications and historical milestones regarding these engineering shifts, you can explore the Mitsubishi Motors Global History.
Key Mechanical Strengths and Performance
The primary appeal of an automatic Pajero lies in its versatility. Off-road driving often demands smooth, uninterrupted torque delivery. Manual clutch control on loose sand or rocky ascents can lead to stalling or sudden loss of momentum. An automatic torque converter multiplies torque at launch, letting the vehicle crawl over obstacles smoothly.
The powerhouse behind many of these builds is the 4M41 3.2-litre common-rail diesel engine or the thirsty yet potent 3.8-litre V6 petrol. The diesel variants, in particular, matched the automatic gearbox's shifting parameters to deliver strong low-end pulling power right where it's needed.
Off-Road Capability Without Compromise
On demanding trails, the automatic transmission handles shifting duties while the center differential lock ensures equal power distribution to the front and rear axles. Drivers can drop the gear selector into manual mode to hold a specific gear, preventing the transmission from upshifting prematurely mid-obstacle. This setup reduces driver fatigue during multi-day overland trips, allowing you to focus entirely on picking the right line through ruts or washouts.
Common Weaknesses and Maintenance Realities
No vehicle of this pedigree is entirely bulletproof. Buying or maintaining an automatic Pajero requires attention to specific mechanical vulnerabilities that develop over years of service.
- Transmission Fluid Degradation: Many early owners fell for the marketing myth of "lifetime fluid." In reality, severe off-road use and towing break down fluid properties quickly. Neglecting fluid changes every 40,000 to 60,000 kilometers leads to delayed shifting, clutch pack slipping, and overheating.
- Inhibitor Switch Failures: If you notice the gear indicator lights on your dashboard flashing simultaneously (such as the D and N lights), it's often a failing inhibitor switch. This component tells the computer what gear is selected; when it fails, it can disrupt starting or normal shifting operations.
- Cooling System Neglect: Automatic transmissions rely heavily on auxiliary fluid coolers integrated into the main radiator. If the cooling system clogs or fails, transmission temperatures spike, destroying seals and damaging internal components.
To read detailed technical breakdowns and owner maintenance logs, visit Pajero 4x4 Life.
Frequently Asked Questions
Which automatic transmission comes in the fourth-generation Pajero?
Fourth-generation models primarily utilize a five-speed electronically controlled automatic transmission featuring a sports-mode manual override. This unit was engineered to handle the high torque output of the 3.2-litre diesel and 3.8-litre petrol engines.
Is the automatic transmission reliable for heavy towing?
Yes, provided the cooling system is up to the task. The automatic Pajero is rated for substantial towing capacities, but adding an aftermarket transmission oil cooler is standard practice if you regularly pull heavy caravans or trailers through hot climates.
Why does my automatic Pajero hesitate between second and third gear?
This behavior usually points to aged transmission fluid, a partially blocked valve body, or worn solenoids. Flushing the system and replacing the filter often restores crisp shifting, though high-mileage units may require professional valve body servicing.
Can I tow an automatic Pajero behind a motorhome?
Flat-towing an automatic Pajero with all four wheels on the ground can severely damage the transmission because the oil pump isn't driven when the engine is off. Always use a flatbed trailer or disconnect the driveshafts according to factory guidelines.
