One problem related to engine cooling system has been reported for the 2003 Lexus GX470. The most recently reported issues are listed below.
Whenever giving the vehicle moderate to high acceleration, a rotten egg smell comes out of the air conditioner vents. The smell is so bad that it makes me dizzy and I feel like vomiting. I've been told by the Lexus dealer that this is a "normal characteristic of the vehicle" because of the sulfur content in fuel. I have owned several different models of Lexus vehicles in the past and never had this problem.
| Engine Exhaust System problems | |
| Engine Cooling System problems | |
| Manifold/header/muffler/tail Pipe problems | |
| Gasoline Engine problems | |
| Catalytic Convertor problems |