IsItAGoodCar
Reliability Guide

Common Problems with the
2025–2026 Lexus LC

We've identified 2 known issues that can affect the 2025–2026 Lexus LC. None are considered critical, but they're worth knowing about before you buy.

2
Known Issues
0
Serious
2
Moderate
0
Minor

All Known Issues

12V Auxiliary Battery Discharge During Low-Usage Periods

ModerateElectrics & Electronics

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.

Est. Repair Cost: £200–£450
Warning Signs:

Car fails to respond to keyless entry door handle touch sensors, Slow engine cranking on V8 models or complete failure to enter READY mode on hybrid LC 500h, Erratic electrical warning lights displayed on the instrument cluster upon initial startup, Power windows, mirrors, or active rear spoiler lose automatic memory positioning

What to Inspect:
  • Ask the current owner if the car has been kept on a continuous trickle charger during winter storage
  • Test 12V battery state of charge and load capacity using a dedicated digital battery analyzer
  • Check the boot floor compartment for signs of battery replacement or acid vent pipe displacement
Verified by IsItAGoodCar Research TeamUpdated

Soft-Top Convertible Roof Mechanism and Fabric Wear (LC 500 Convertible)

ModerateBodywork & Rust

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.

Est. Repair Cost: £500–£1,500
Warning Signs:

Creases or mildew visible in the fabric roof, Water ingress around the rear quarter glass, Soft top not latching flush or operating smoothly

What to Inspect:
  • Cycle the soft top through its full opening and closing cycle
  • Inspect the fabric roof for creases, mildew or damage
  • Check for water ingress around the rear quarter glass
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2025–2026 Lexus LC

  • Keep the vehicle on a dedicated battery conditioner or CTEK trickle charger when parked for more than a week, as the complex electrical architecture draws high quiescent standby current.
  • On Convertible models, cycle the soft top through its full opening and closing cycle, ensuring the rear tonneau latches quietly and fabric tension is uniform.
  • Inspect the front lower lip and underbody aerodynamics carefully; the LC has a long front overhang and low ride height that easily scrapes on aggressive UK speed humps.
  • Check tyre wear on the inner edges of the 21-inch forged wheels; performance run-flat tyres can develop stepped wear and severe road rumble if geometry is misaligned.
  • Ensure annual dealer services have been logged continuously to keep the vehicle covered by the 10-year/100,000-mile Lexus Relax warranty package.
2021–2024
Check a 2025–2026 Lexus LC by Registration