What is the Clogged Hybrid Battery Cooling Filter problem on a 2019 Lexus GS (Mk4)?

Common Problems with the
2019–2020 Lexus GS (Mk4)

We've identified 1 known issue that can affect the 2019–2020 Lexus GS (Mk4). None are considered critical, but they're worth knowing about before you buy.

Known Issues

Serious

Moderate

Minor

The 2019–2020 period has an average number of reported issues compared to other Lexus GS (Mk4) year periods.

All Known Issues

Clogged Hybrid Battery Cooling Filter

ModerateEngine

Dust buildup on the hybrid battery intake filter causes the battery to overheat, shortening its life and triggering warning lights.

Estimated cost: £50 (Cleaning) / £2,000 (Battery if failed)Affects: 2012–2020Often appears around: 50,000+ miles

Typical symptoms

•"Hybrid System Fault" warning
•Fan noise from the rear seat area
•Reduced fuel economy

What to inspect before you buy

✓Inspect the filter located near the rear passenger seat base
✓Listen for a loud fan when driving

Buying Tips for the 2019 Lexus GS (Mk4)

✓Verify that the hybrid battery cooling fan filter (behind the rear seats) has been cleaned regularly.
✓Test the Remote Touch controller; early versions can be jerky or unresponsive.
✓Check for "binding" rear brakes, as the calipers can seize if not serviced.

2012–2018 Lexus GS (Mk4)