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RX - 4th Gen (2016-2022) Discussion topics related to the 2016 and up RX350 and RX450h models

Low brake power light, RX not starting?

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Old Nov 21, 2016 | 04:02 PM
  #16  
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Default Low Brake Pressure Warning--Car wont start

Getting Low Brake Pressure Warning 3 or 4 times a week. RX wont start, sometimes takes 10 15 minutes and massive brake pumping. Dealer says cant duplicate problem and is no help at all.
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Old Nov 21, 2016 | 06:37 PM
  #17  
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Not sure what to tell you.

If i were you, I would take a video every time I started my car. Early in the cold morning, after using it and not using it for a few hours etc. If you have a video it's alot more convincing.
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Old Nov 21, 2016 | 10:02 PM
  #18  
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Have several photos of low brake power message on dash, so far Lexus service is no help. Was wondering if anyone else has experienced this problem.
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Old Nov 21, 2016 | 10:07 PM
  #19  
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Had the same thing on my car. Tell them to look at tsb for brake booster.
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Old Nov 22, 2016 | 11:37 AM
  #20  
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I've had this happen a couple of times. I thought I just wasn't pressing the brake pedal hard enough.
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Old Nov 28, 2016 | 05:53 AM
  #21  
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Default Have this brake issue too

Originally Posted by Jorgenamm
Has anyone else had issues with their brakes? In December shortly after purchasing my car it began throwing a "low brake power" light in the mornings. I would get in and the brake wouldn't go down to allow me to start the car. I was able to override by holding the start button and after the car was driven it wasn't an issue until the next morning. I took it in and they replaced some tube that was leaking. 4 months later I'm having the same issue. I get in the car and the brake refuses to go down to allow me to start the car. Back to the dealer I go..........

I have this very same problem after not starting car for a few days. My car has barely 2,000 miles on it and I reported the problem to my dealer and they could not duplicate the issue and talked to me like I didn't understand how to turn on the car. After several tries i am able to get car started but i was very surprised/disappointed that a brand new luxury car has this problem. Shame on you Lexus.
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Old Nov 29, 2016 | 11:11 AM
  #22  
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I had the same issue early this year (purchased the RX 350 last day of 2015); the warning showed every day in the morning; dealer found vacuum leak of brake booster and get it replaced; it's been good so far as far as I don't park it for over a week without starting.
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Old Dec 16, 2016 | 09:31 AM
  #23  
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Default 2016 Lexus rx350 won't start

when I tried to start the car today it made some buzzing noises and stopped. Any idea what the problem is? Who should I contact to have it fixed?
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Old Dec 16, 2016 | 09:42 AM
  #24  
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I would contact your dealer.
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Old Dec 16, 2016 | 12:11 PM
  #25  
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Low brake power and car won't start at all
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Old Dec 16, 2016 | 10:26 PM
  #26  
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Originally Posted by Ilikerice
Low brake power and car won't start at all
You probably dealt with it already, but you can get it towed to the dealer, free of charge. It's a warranty repair. Just call roadside assistance.
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Old Dec 17, 2016 | 05:56 AM
  #27  
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May be a bad battery. Ours did that on a weekend. I jumped it off and it drove fine but would not charge the battery. Jumped it off Monday and drove it to the dealer where they install a new battery under warranty. Car had about 10,000 miles on it.
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Old Dec 18, 2016 | 07:01 PM
  #28  
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Mine did the same thing and had less than 2000 miles. I call Lexus roadside assistance and they found out it was the battery. They charged it and i drove it to the dealer. It had a short and was replaced under warranty.
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Old Dec 18, 2016 | 07:04 PM
  #29  
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The low brake power is a recognized problem others have experienced. Hopefully there is a campaign for this soon. See this thread: https://www.clublexus.com/forums/rx-...t-problem.html
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Old Dec 18, 2016 | 07:56 PM
  #30  
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My battery went out last month at 6 months and 6100 miles.
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