IsItAGoodCar
Reliability Guide

Common Problems with the
2009 Lexus RX (AL10)

The 2009 launch of the third-generation RX (AL10) solidified its position as the quintessential luxury hybrid SUV. It introduced the 'Remote Touch' controller and a more powerful, yet more efficient, 3.5-litre V6 hybrid system.

What changed for 2009

  • •Debut of the all-new third-generation RX.
  • •Introduction of the RX 450h with a more efficient Atkinson-cycle 3.5-litre V6 hybrid powertrain.

Common MOT watch-outs

  • !Wear on suspension components, particularly front lower arm bushes and anti-roll bar links.
  • !Seized rear brake calipers.
2
Known Issues
1
Serious
1
Moderate
0
Minor

All Known Issues

Brake Actuator Failure

SeriousBrakes

The hydraulic brake actuator can fail, leading to warning lights, a noisy brake pedal, and a very expensive repair. Lexus has supported some cars in the past, but many UK examples are now too old for goodwill.

Est. Repair Cost: £1,500–£2,500
Warning Signs:

"Squawking" or buzzing noise when braking, Brake or ABS warning lights, Longer pedal travel than normal

What to Inspect:
  • Press the brake pedal repeatedly while stationary and listen for the pump cycling
  • Check for stored ABS or brake-system codes
  • Confirm the warning lights stay off after a cold start
Verified by IsItAGoodCar Research Team

Radiator Leaks

ModerateCooling System

The radiator can leak where the aluminium core meets the plastic end tanks, usually starting as a slow weep before turning into a more obvious coolant loss issue.

Est. Repair Cost: £400–£700
Warning Signs:

Pink crusting around the radiator seams, Sweet coolant smell after a run, Gradually dropping coolant level

What to Inspect:
  • Inspect the lower corners of the radiator with a torch
  • Check the coolant bottle and undertray for dried pink residue
  • Watch the temperature gauge on a full test drive
Verified by IsItAGoodCar Research Team

Buying Tips for 2009 Lexus RX (AL10)

  • ✓Listen for a 'clunk' from the steering column when turning at low speeds, which can indicate a worn intermediate shaft.
  • ✓Check the rear wheels for excessive brake dust or heat, indicating seized brake calipers.
2010–2011
Check a 2009 Lexus RX (AL10) by Registration