IsItAGoodCar
Reliability Guide

Common Problems with the
2022 Lexus RX (Mk5)

We've identified 3 known issues that can affect the 2022 Lexus RX (Mk5). 2 of these are serious faults that could be expensive to repair.

3
Known Issues
2
Serious
1
Moderate
0
Minor

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.

Est. Repair Cost: £3,000–£5,000

CAN-Bus Security Vulnerability

SeriousElectrics & Electronics

While improved over the previous generation, high-end SUVs like the RX are targets for CAN-bus injection theft in the UK. Lexus has released plates and software to mitigate this.

Est. Repair Cost: Warranty / £150 for plates

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.

Est. Repair Cost: £0 (Warranty / £150 AGM battery)

Buying Tips for 2022 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.
2023
Check a 2022 Lexus RX (Mk5) by Registration