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Pre-collision system malfunction

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Old Mar 18, 2025 | 03:33 PM
  #16  
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RA4725
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Originally Posted by Latte1
Well, I stopped at another place and had them check the battery and they said it was good too, but if I could find a place to check it with a load, that would be better. I called the mechanic who first told me it needed to be replaced and told him I went to get a battery, but they told me it was good so I checked it at another place and they did too. I asked if they checked it with a load and he said to bring it in and he'd check it again.

He wheeled out a piece of equipment to do it and hooked it up and said it was definitely weak and should have been replaced years ago because it's the original battery. I told him that would have been a mistake because it has been a great battey with no problems for all of these years.

He quickly told me what it was supposed to say, but I had no idea what any of it meant and I don't think he was thrilled I was back so I didn't push for him to explain it to me.

I got a new, top of the line, battery today, turned the PCS off again, and by the time I got home and was pulling into the garage, it was back on again and going off as I was pulling into the garage, grrr.

Any other ideas? Thanks
I'm having a ABS and Collision light problem now too, and Lexus even said it was fine.Im 99% sure its not the battery.A guy roday suggested ABS sensor? My car blew NO codes either.I made a long post today...6-7-8 lights came on,and after a new air filter,im down to 2!?
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Old Mar 18, 2025 | 03:43 PM
  #17  
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That's a rare event when they tell you that you don't need something vs. lying to you telling you that you do when you don't.
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Old Mar 18, 2025 | 04:55 PM
  #18  
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Originally Posted by Latte1
That's a rare event when they tell you that you don't need something vs. lying to you telling you that you do when you don't.
Yes,that's why i added my resume.I actually sold cars at 3 Lexus dealers,and know it's all about profit. They could have easily sold me a battery.I told them.it was 48 mos.old too.Hard to believe.

Then another guy today,tells me to get a 2nd opinion on it. I have to think Lexus has the best scan tools available. But I'll go to the parts store again tomm.

The same guy said maybe it's a ABS Speed Sensor.I see theres 4. 101K in a snowy climate,i can buy that.Its just weird that light went off for 2 solid weeks,until 2 days ago.Unless it just broke.Its very stressful when you have to have a car for work,and its still a mystery,and ive been very proactive.

I just watched videos on how to replace a abs sensor,and it looks very easy for someone with a lift and the tools. 15 minutes fix.

But hopefully I'll solve this mystery tomm.
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Old Mar 18, 2025 | 05:02 PM
  #19  
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I was told those mobile ones they use at the part stores aren't accurate, and I believe that now. My mechanic rolled out a large toolbox size one that he performed the test with. I'm sorry I don't remember what it was called, but it did give out a lot more information.
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Old Mar 18, 2025 | 05:20 PM
  #20  
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Originally Posted by Latte1
I was told those mobile ones they use at the part stores aren't accurate, and I believe that now. My mechanic rolled out a large toolbox size one that he performed the test with. I'm sorry I don't remember what it was called, but it did give out a lot more information.
I can believe that.I went to auto parts store 1st.Then the Lexus dealer had the Ipad,and had to have the best equipment. I went to both places.

I'm going to try 1 more Auto part store tomm.And I just emailed 3 mechanics.

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