IsItAGoodCar
Reliability Guide

Common Problems with the
2009–2012 Lexus LS (Mk4)

We've identified 3 known issues that can affect the 2009–2012 Lexus LS (Mk4). 2 of these are serious faults that could be expensive to repair.

3
Known Issues
2
Serious
1
Moderate
0
Minor

All Known Issues

Air Suspension Failure

SeriousSuspension & Chassis

The air suspension struts can leak over time, causing the car to sag and putting extra strain on the compressor.

Est. Repair Cost: £1,000–£1,500 per strut
Warning Signs:

Car sitting lower on one side, Hissing noise from the wheel arches, Compressor running constantly

What to Inspect:
  • Measure the height of each wheel arch after the car has sat overnight
  • Check if the car rises promptly when started
Verified by IsItAGoodCar Research Team

Brake Actuator Failure

SeriousBrakes

Similar to the GS and RX of this era, the LS 460 and 600h can suffer from brake actuator failure.

Est. Repair Cost: £2,000–£3,000
Warning Signs:

ABS and brake warning lights, Long pedal travel, Barking noise from the brakes

What to Inspect:
  • Test the brakes under various loads
  • Check service history for brake fluid flushes (critical for actuator life)
Verified by IsItAGoodCar Research Team

Control Arm Bushing Wear

ModerateSuspension & Chassis

The LS is a heavy car, and its front control arm bushings are a known weak point, leading to vague steering and clunking noises.

Est. Repair Cost: £400–£800
Warning Signs:

Clunking noise over bumps, Steering wheel vibration, Uneven tyre wear

What to Inspect:
  • Listen for knocks during the test drive
  • Inspect the tyres for feathering
Verified by IsItAGoodCar Research Team

Buying Tips for 2009–2012 Lexus LS (Mk4)

  • ✓If the car has air suspension, check that it rises and falls evenly; a single failed strut can cost over £1,000.
  • ✓On the LS 600h, check for a "Hybrid Health Check" certificate; these batteries are large and expensive to replace.
  • ✓Listen for clunking from the front suspension, which often points to worn control arm bushings.
20082013
Check a 2009–2012 Lexus LS (Mk4) by Registration