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2004 rx330 cruise control will not turn on, No dash light


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  • 5 weeks later...

Common reasons for this to happen:

  • Bad Fuse: Like many electronically controlled systems in your car, the cruise control has a corresponding fuse which will blow to protect the system if it senses a short circuit. When the fuse of for the cruise control blows, the cruise control will stop working altogether.

  • Failing Brake Pedal Switch: The brake pedal switch turns on the vehicles brake lights when it senses that the brake pedal has been pressed. Because cruise control systems have been designed to disengage when the brake pedal is pressed, the cruise control is wired to the brake pedal switch. If the brake pedal switch fails, the car may think the brakes are engaged and not allow the cruise control system to turn on.

  • Failing Speed Sensor: A speed sensor has many purposes including indicating the speed of the vehicle, regulating flow of fuel and ignition timing, and operating the cruise control. If the speed sensor fails the cruise control may stop working. You may also notice that the speedometer has stopped working and the engine has more difficulty when idling.

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  • 1 year later...
  • 10 months later...

It looks like it's fuse 52 in the driver's side (See below) fuse box.

Lexus RX 330 (XU30) (2004-2006) Fuse Diagram • FuseCheck.com

According to a quick internet search:

"I believe the fuse box is in the car on the passenger side under the glove box by your feet. Lay on your back and you will be able to see it. It is about 3" X 2", white with all the fuse info on the cover."

If you've never checked a fuse before you may want to have someone pull and test it.

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