Common Problems with the
2017–2022 Lexus LS (Mk5)

We've identified 2 known issues that can affect the 2017–2022 Lexus LS (Mk5). None are considered critical, but they're worth knowing about before you buy.

Known Issues

Serious

Moderate

Minor

The 2017–2022 period has 1 more issue than the Lexus LS (Mk5) average across all year periods.

All Known Issues

12V Battery Drain

ModerateElectrics & Electronics

Like many modern high-tech Lexus models, the LS 500h can suffer from a flat 12V battery if left unused for as little as a week.

Estimated cost: £200–£300Affects: 2017–2022Often appears around: Any

Typical symptoms

•Car unresponsive to key fob
•Multiple warning lights on startup
•Settings resetting

What to inspect before you buy

✓Ask about the car's usage patterns
✓Check for a recent 12V battery replacement

Run-Flat Tyre Noise and Wear

MinorSuspension & Chassis

The standard run-flat tyres are prone to road noise and can wear unevenly, leading to a degraded driving experience.

Estimated cost: £300 per tyreAffects: 2017–2025Often appears around: 15,000–20,000 miles

Typical symptoms

•Loud humming from the road
•Vibration through the steering wheel
•Premature inner-edge wear

What to inspect before you buy

✓Check the brand and condition of the tyres
✓Listen for excess road roar at motorway speeds

Buying Tips for the 2017 Lexus LS (Mk5)

✓Check the 12V battery health; this car has a high parasitic draw and needs regular driving.
✓Note the ride quality; models with 20-inch run-flat tyres can feel surprisingly firm on broken UK roads.
✓The pre-2021 models use the trackpad-only interface; ensure you are comfortable with it.

2023–2025 Lexus LS (Mk5)