Four problems related to service brakes have been reported for the 2003 Lexus GX470. The most recently reported issues are listed below.
It is possible to simultaneously depress the gas pedal when braking, this causes sudden uncontrollable acceleration I reported the incident too Toyota and requested upgraded ecu software that disables the gas pedal while braking Toyota refused to provide a simple software fix my wife is a witness.
While driving and at any braking conditions when depressing the brake pedal vehicle feels like someone is hitting the rear of vehicle.
When releasing the brake pedal, the vehicle makes a thumping noise. At times it feels like someone is tapping me in the rear of the vehicle. I have brought the vehicle in for service 3 times because of this issue and each time I am told it is a "normal characteristics of the vehicle. ".
When applying the brakes while driving at 60 mph, the steering wheel vibrates and the vehicle shakes. Dealer cannot determine the cause of the problem. There was a persistent vibration in the steering and it was hard to turn the steering wheel.
| Service Brakes problems | |
| Brake Disc Caliper problems | |
| Brake Master Cylinder problems |