2009 Honda S2000

The S2000's cloth soft top deteriorates over time, developing fading, shrinkage, and small tears along the fold creases. The rear plastic window can delaminate from the fabric surround, develop yellowing and cloudiness, and eventually crack. In severe cases, the soft top can leak during rain through degraded seams and the window-to-fabric bond.

Replace the entire soft top assembly when the fabric or window has deteriorated significantly. OEM and aftermarket replacement tops are available with glass rear windows for improved clarity and durability. A convertible top protectant (like 303 Aerospace) applied every 3-4 months extends the fabric life. Window polish can temporarily improve clarity on yellowed plastic windows.

The A/C system on the S2000 is known for compressor failure and evaporator leaks. The compressor clutch bearing fails first, followed by internal compressor damage. The evaporator, located deep within the dashboard, can also develop pinhole leaks from corrosion, causing a gradual loss of refrigerant. Both issues result in the A/C blowing warm air.

For compressor failure, replace the compressor, receiver-dryer, and expansion valve with a full system flush. For evaporator leaks, the dashboard must be partially disassembled to access and replace the evaporator core. Combining both repairs saves labor if the system is being opened. Use R-134a refrigerant and the specified compressor oil.

The S2000, particularly AP1 models (2000-2003) but also AP2 (2004-2009), can exhibit sudden snap oversteer when lifting off the throttle mid-corner or when the rear tires break traction. The short wheelbase, rear weight bias, and VTEC engagement at high RPM contribute to an abrupt transition from grip to oversteer that can catch drivers off-guard.

The AP2 (2004-2009) models received revised rear suspension geometry and a longer final drive ratio that reduced the snap oversteer tendency compared to AP1. High-quality performance tires (200 treadwear or lower) significantly improve rear grip. An alignment with increased rear toe-in (0.1 to 0.2 degrees) improves stability. Professional driving instruction is highly recommended for S2000 owners.

The hydraulic clutch system on the S2000 can develop leaks from the clutch master cylinder or the concentric slave cylinder (CSC), resulting in a spongy clutch pedal, difficulty shifting, or complete loss of clutch disengagement. The CSC is located inside the bellhousing and requires transmission removal to replace.

Replace the clutch master cylinder if it is the source of the leak (inexpensive and accessible). If the CSC has failed, transmission removal is required, making it cost-effective to replace the clutch disc, pressure plate, throwout bearing, and flywheel surface at the same time. Flush the clutch hydraulic system with fresh DOT 3 brake fluid.

The F20C and F22C engines can develop a timing chain tensioner rattle on cold starts, producing a brief metallic rattle from the front of the engine for the first few seconds after startup. The tensioner loses oil pressure overnight, and the chain slaps against the guides until oil pressure is restored. While not immediately dangerous, prolonged neglect can lead to timing chain stretch.

Replace the timing chain tensioner with an updated OEM part. Inspect the timing chain and guides for wear while the tensioner is being replaced. Using a high-quality 10W-30 or 0W-20 oil (as specified for the model year) with regular 5,000-mile oil changes helps maintain tensioner oil pressure. Avoid revving the engine immediately on cold starts.