2002 — 2007
4.2L AJ-V8 Supercharged - R Performance version
Petrol
Perform a series of low-speed turns to listen for any knocking or clicking from the front suspension; worn control arm bushes are common and can affect the legendary S-Type ride quality.
While accelerating firmly in a safe area, monitor the gear changes; the ZF 6HP26 transmission is robust, but erratic shifting might suggest the mechatronics unit or fluid might eventually need professional attention.
Check the secondary cooling system by ensuring the engine reaches operating temperature correctly; a failing thermostat or plastic cooling pipes can occasionally cause temperature fluctuations.
Operate all electronic cabin controls, specifically the navigation screen and seat adjusters; electrical gremlins can sometimes appear in vehicles of this vintage due to ageing wiring harnesses or battery health.
Consider a full transmission fluid and filter flush to ensure the longevity of the ZF gearbox.
Review the condition of the supercharger drive belt and tensioner assembly for any signs of wear.
Inspect the integrity of the suspension air-assist components or standard dampers to maintain the car's dynamic handling.
Prioritise regular engine oil changes using high-quality synthetic lubricants to keep the AJ-V8 internals clean.
Keep a close eye on the battery health, as the S-Type's complex electronics are sensitive to low voltage.
Ensure the coolant system is bled and maintained, as the V8 engine generates significant heat.
Check the tire wear patterns; the R Performance model can be sensitive to alignment, so regular balancing is a good habit.
Inspect the underside for any signs of surface corrosion, which is common in older vehicles exposed to salt air.
Estimated repair costs if issues arise
If this component needs attention in the future, the estimated cost in NZ is reflective of the specialised nature of the Eaton blower rebuild, which keeps your forced induction performance sharp.
Depending on the car's history, you might eventually need to budget for a complete refresh of the front control arms and bushes to regain that signature Jaguar 'waft' over bumps.
If the transmission begins to shift harshly, a mechatronic bridge seal replacement and fluid service is a common preventative measure for these units.
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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