Common Problems with the
2024 Lexus RX (Mk5)

We've identified 2 known issues that can affect the 2024 Lexus RX (Mk5). 1 of these are serious faults that could be expensive to repair.

Known Issues

Serious

Moderate

Minor

The 2024 period has 1 more issue than the Lexus RX (Mk5) average across all year periods.

All Known Issues

Rear Motor Cable Corrosion ("Cablegate")

SeriousElectrics & Electronics

The latest RX models continue to use an exposed high-voltage connector for the rear motor that can suffer from corrosion in harsh UK winters, potentially leading to expensive electrical repairs.

Most affected: RX 350h AWD, RX 450h+, RX 500h

Estimated cost: £3,000–£5,000Affects: 2022–2024Often appears around: Any

Typical symptoms

•Hybrid System Malfunction warning
•AWD system disabled
•Corrosion visible on the motor connector housing

What to inspect before you buy

✓Confirm if the latest improved cable and protective cover have been fitted
✓Check for any history of hybrid system alerts

12V Battery Parasitic Drain

ModerateElectrics & Electronics

Similar to the NX, the latest RX can struggle to maintain 12V charge if the car is not used for several days.

Estimated cost: WarrantyAffects: 2022–2024Often appears around: Any

Typical symptoms

•"Entry system failure" messages
•Car won't start/dead battery
•Settings resetting

What to inspect before you buy

✓Check the 12V battery health status
✓Ask if the owner has experienced any "dead car" scenarios

Buying Tips for the 2024 Lexus RX (Mk5)

✓The RX 500h uses a different 6-speed automatic instead of an e-CVT; test it for smooth shifts under hard acceleration.
✓Verify that any security software patches for CAN-bus theft have been applied by a Lexus dealer.
✓Test the ambient lighting and infotainment profiles for stability.

2022–2023 Lexus RX (Mk5)2025 Lexus RX (Mk5)