RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

2009 RX 350 Cruise Control Failure

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Old 02-17-19, 03:47 PM
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jvarady
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Cool 2009 RX 350 Cruise Control Failure

I have a 2009 Lexus RX 350 where the cruise control doesn't work or even turn on...no light. I push the button and absolutely nothing...I've check the fuse and it appears to be fine and now don't know what to try next; any ideas?
Old 02-18-19, 06:36 AM
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mnewxcv
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could be the switch/button, connection/wiring, or cruise control computer/ecu.
Old 02-18-19, 10:41 AM
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DennisMik
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The cruise control uses 4 or 5 fuses, depending on which version of the cruise control you have. the fuses are:
ETCS - 10 amp
GAUGE1 - 7.5 amp
GAUGE2 - 7.5 amp
IGN - 10 amp
STOP - 10 amp

Pull the fuses out and test for continuity with a meter. DO NOT rely on a visual inspection. If you don't have a meter, you can get one at Harbor Freight for $4.
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Old 02-18-19, 04:40 PM
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mnewxcv
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Originally Posted by DennisMik

Pull the fuses out and test for continuity with a meter. DO NOT rely on a visual inspection. If you don't have a meter, you can get one at Harbor Freight for $4.
with a free screwdriver no less
Old 02-18-19, 08:17 PM
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Audiqv8
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Check your brake light switch. The cruise control disengages once it sees a brake light signal.
Old 09-17-21, 09:54 PM
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iMSQ
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the same issue?
https://www.clublexus.com/forums/rx-...l#post11128687
Old 02-25-23, 11:47 AM
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trainman30
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Default Same issue

My fuses checked good. Are there any other tests I can do to narrow down my issue?
Old 02-25-23, 11:53 AM
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trainman30
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Default Same issue

My fuses checked good. Are there any other tests I can do to narrow down my issue?
Old 02-25-23, 02:03 PM
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tomr51
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faulty clock spring read here https://www.clublexus.com/forums/rx-...t-turn-on.html
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