2003 Lexus RX300 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Lexus RX300

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2003 Lexus RX300 Problems

Misfire and/or Check Engine Light Due to Failed Ignition Coil

On higher mileage vehicles, an engine misfire may develop and/or the Check Engine Light may illuminate due to a failed ignition coil. It is not uncommon to replace all the coils when the first one fails in order to prevent return trips to the repair shop.

Low Engine Idle and/or Stalling Due to Dirty Idle Air Control Valve

Debris can get into the idle air control valve. This will restrict the air flow into the engine, causing idle speed and/or stalling when cold. The valve can be cleaned or replaced to correct this concern.

Check Engine Light and Lack of Power Due to Failed Mass Air Flow Sensor

The Check Engine Light may illuminate because the mass air flow sensor sends incorrect information to the engine control computer. This can cause a loss of power on acceleration. A failed mass air flow sensor will require replacement.

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2003 Lexus RX300 Reviews

I have a Lexus RX300, 2003, 107k miles. I brought my car in for service to adjust my headlights. Thay said it could not be fixed and that thay would have to replace the hole light. Is that possible sara208@optonline.net
Why would my wood steering wheel suddenly become cloudy and discolored? It was fine one day then it became cloudy and gray looking the next day.
Absolutely love this car. I bought it in 2006 with 27k miles on it. It handles really well in the snow and ice and drives like a car, not a truck. The interior is quite roomy and comfortable. The rear storage area is large as well. Knock on wood, the reliability is great. I've had only minor issues. I had a '99 RX300 whose transmission went at 110,000 miles, and I have 109,000 on t...

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