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Common Faults in the Lexus SC 430: Things to Know When Buying a Used One

Model: Lexus SC Z30 - Years 1991-2000
Part: Checks and maintenance

This is an important guide for those looking to purchase a used Lexus SC430, detailing what to check. The most common issue is the engine light, caused by a faulty lambda sensor, a recurring fault in Lexus models of that era. Another common code is P0125, related to the engine coolant temperature: this may indicate a faulty thermostat or engine temperature sensor. The critical area of the convertible is the boot: the drainage channels of the hardtop can become blocked with leaves and dirt, allowing water to enter the boot, where the amplifiers, navigation unit, and CD changer are located. The hydraulic motor for the roof could also be a problem: it is a very expensive repair. A common fault of the era is the 6-disc CD changer that stops working; although it is rarely used today, it is still a malfunctioning electronic device. A critical feature is the run-flat tyres with reinforced structure, which are very stiff and noisy; many owners replaced them with standard tyres, but this means no spare wheel, so you will need to purchase a repair kit.

Posted on 13 June 2026 by ScegliAuto

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