Common Problems with the
2020 Lexus LC

Because the Lexus LC is often cherished as a weekend leisure car or grand tourer, vehicles frequently sit unused for weeks at a time. The car complex network of networked control modules, keyless entry transceivers, active suspension sensors, and alarm systems maintains a continuous parasitic draw. Within 10 to 14 days of standing without a battery conditioner, the 12V auxiliary battery voltage drops below threshold, triggering random electrical fault codes, disabling smart entry, and leaving the vehicle unable to start.

LC 500 Convertible models feature a four-layer fabric soft top that folds in 15 seconds. The roof mechanism can develop creases, mildew or water ingress around the rear quarter glass, particularly on cars subjected to seasonal storage. The fabric tension should be uniform and the rear tonneau should latch quietly.

UK-specification LC models equipped with 20-inch and 21-inch forged alloy wheels use stiff-sidewall Bridgestone or Michelin run-flat tyres paired with aggressive negative camber and toe settings. On uneven and potholed British tarmac, the inner tread blocks of both front and rear tyres develop severe cupping and heel-and-toe stepped wear. This generates a pronounced low-frequency drone or roaring sound at speeds between 40mph and 70mph, frequently misdiagnosed by owners as wheel bearing failure.