RX - 1st Gen (1999-2003) Discussion topics related to the 1999 -2003 RX300 models

At what mileage does the alternator generally fail??

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Old 02-15-09 | 11:43 AM
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Default At what mileage does the alternator generally fail??

I have 140,000 on my 99 RX300 and am about to take a big trip in a few weeks. Was wondering if I needed to rebuild this puppy before the trip as a preventative measure? Do other see these alternators lasting into the 200k range??
Old 02-15-09 | 12:59 PM
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No, you shouldn't need to do that. I can't remember anyone offhand having an issue with the alternator, but a few with the starter, but really rare.
Old 02-15-09 | 01:43 PM
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Originally Posted by nccareer
I have 140,000 on my 99 RX300 and am about to take a big trip in a few weeks. Was wondering if I needed to rebuild this puppy before the trip as a preventative measure? Do other see these alternators lasting into the 200k range??
My DIL's was replaced under warrantee before they got the car at 32k mi. At almost 130k there hasn't been a hickup since. If there was any way you could use a mirror to look in the end (probably isn't), the brushes are the most common of all problems. I wouldn't personally worry about it. Most all of the parts Toyota uses are very high quality and it could well go to 200k or more. (no guarantees) I have seen many alternators go to 200k and more, even on American cars, where the quality isn't generally as high as Japanese.
Old 02-16-09 | 09:33 AM
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I just recently replaced an alternator, timing belt and water pump on my 2001 RX300 with 109K as a preventative measure. The timing belt was due to be replaced based on the months of ownership. I ordered to replace the other parts to save the cost of labour in the future.
Old 02-16-09 | 09:38 AM
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Originally Posted by Blu J
I just recently replaced an alternator, timing belt and water pump on my 2001 RX300 with 109K as a preventative measure. The timing belt was due to be replaced based on the months of ownership. I ordered to replace the other parts to save the cost of labour in the future.
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Old 02-16-09 | 11:33 AM
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Originally Posted by Blu J
2001 ....109K ... The timing belt was due to be replaced based on the months of ownership.
My recollection is that Lexus recommends timing belt replacement at 90K-miles or 6 years, so I'm guessing you were slightly overdue. Unless you're at 109K -km and not miles.
Old 02-16-09 | 11:36 AM
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Bob2200, yes 90k, however the belt looked like brand new at 100k when I did mine...
Old 02-16-09 | 08:20 PM
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Originally Posted by bob2200
My recollection is that Lexus recommends timing belt replacement at 90K-miles or 6 years, so I'm guessing you were slightly overdue. Unless you're at 109K -km and not miles.
According to the Canadian maintenance schedule, the timing belt should be replaced at 110,000 kms. I did it few months earlier.
Old 02-17-09 | 07:09 AM
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Aw,run her till she quit`s...... Yeah right?
Old 02-19-09 | 08:17 AM
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im at 168,000 miles and i didn't need to change out the alternator. but if you have 4 12" or 2 15" subs then its going to burn up the alternator. with normal use you shouldn't have to change it.
Old 02-20-09 | 06:32 AM
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Just don`t get it wet, alternator`s don`t seem to like to get wet. I cleaned my engine compartment last fall, and I got it a little wet. Now every so often it sounds like my old Chrysler Laser turbo when she was cold.
Old 02-20-09 | 08:00 AM
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i lost that plastic splash guard below the engine compartment 2 winters ago, do you guys think i run a risk by not having it?
Old 02-20-09 | 08:12 AM
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UNOHOO my boy, How the *&#$ did you loose that?? I was actually thinking about keeping mine off. Especially now, because I`m going to do an auto-RX treatment. I don`t think it hurt`s anything at all. Except it`s supposed to keep maximum air-flow through the radiator when driving. (you don`t loose any flow from underneath) That`s what I was told about the splash guard on my 87 300E. Weather it`s true or not,who know`s. But that`s Mercedes engineering. Mmm-Kay?

Last edited by lexus114; 02-20-09 at 08:37 AM.
Old 02-20-09 | 12:43 PM
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That splash guard protects some of the vacuum hoses down in that area, I would get a replacemnt and put it back...
Old 02-20-09 | 12:55 PM
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Originally Posted by thomas1
That splash guard protects some of the vacuum hoses down in that area, I would get a replacemnt and put it back...
Yeah but other than that,is their really a need for it?


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