2003 — 2007
4.7L (2UZ-FE) V8 - Updated 5-speed Automatic
Petrol
Test the AHC (Active Height Control) system | Detail: While the engine is running, cycle the suspension from 'Low' to 'High' several times. It's common for older systems to be sluggish or show dash warnings if the hydraulic fluid hasn't been serviced, so listen for any unusual pump whining.
Check for steering rack shudder | Detail: At low speeds, turn the steering wheel lock-to-lock. If you notice any vibrations or 'stickiness,' it is worth noting that the steering rack bushings or pump may eventually require some TLC.
Examine the underbody for corrosion | Detail: Check behind the rear wheels and along the chassis rails. Even with good maintenance, NZ's coastal environment can lead to surface rust; ensure it hasn't progressed to structural concerns.
Inspect the center differential lock functionality | Detail: Find a gravel area and engage the center diff lock button. Ensure it engages and disengages smoothly, as infrequent use can sometimes cause the actuator to become a bit hesitant in vehicles of this vintage.
Usually marks the interval for a comprehensive cooling system check, including radiator condition and hose health.
Often when owners look at refreshing the alternator and starter motor, as well as inspecting the condition of the steering rack bushes.
Typically the stage where AHC hydraulic spheres may start to lose their gas charge, affecting ride comfort.
Confirm the timing belt and water pump were replaced within the last 100,000km as per service records.
Check that the 5-speed automatic transmission fluid has been flushed periodically for smooth gear changes.
Verify the service history for the AHC hydraulic system fluid flush to keep the pump longevity in check.
Inspect the CV axle boots for any tears or grease leakage, which is common in older 4WDs.
Test all electrical accessories, including seat heaters and the moonroof, as these are easy to overlook.
Estimated repair costs if issues arise
Because this is an interference engine, it's vital to stay on top of this interval. If the documentation isn't clear, you might eventually need to budget for a complete kit replacement to ensure ongoing reliability.
If the suspension feels firm or the ride height doesn't adjust as quickly as it should, you might eventually need to budget for replacing the hydraulic spheres or servicing the pump unit.
Due to the weight and capability of these vehicles, the steering rack can develop play over time. Depending on the car's history, you might eventually need to budget for a refurbishment or replacement of the rack components.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer