IS C Discussion about the convertible IS C model

convertible top problem

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Old 03-22-22 | 06:06 PM
  #61  
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If the book notes to use two people, use two people.
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Old 03-28-22 | 03:54 PM
  #62  
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in your manual, can you tell me how to replace the whole assembly? https://www.ebay.com/itm/35369555647...uot000azq00004

one of my gears is broken and I only found the whole assembly and I want to do it myself. Any help will be appreciated.

Thanks
Old 03-28-22 | 08:31 PM
  #63  
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I have not replaced one of these, but it doesn't look like it is that complex of a job. You will have to remove a lot of the trim stuff in the trunk

The important thing will be to have the arms on both sides raised to the same position.

Here is a guide for doing that.

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File Type: pdf
Trunk Lid Hinge Removal.pdf (758.4 KB, 110 views)
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Old 03-30-22 | 07:07 AM
  #64  
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Thank you for the info. Do you know if as a " regular user", I can download all the images or diagrams from each steps? It redirects me to another page. While I am not an expert, I want to do it myself but I don't want to miss anything.
Thanks again for your support. My plan is doing this over the weekend.

Old 03-30-22 | 12:01 PM
  #65  
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You can if you are willing to pay $15 or $25. Those links take you to the Toyota Techstream site, which is a subscription service. When you subscribe for the minimum time period, you can look at and/or download the information.

Sometimes when you want to work on a car, you may have to go and buy a tool. This would be one of those tools.
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Old 02-10-24 | 11:23 AM
  #66  
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Default Considering buying a low mileage IS250C--Is that a mistake if I'm not DIY repair guy?

I posted this on another related thread on this forum (about IS250C convertible top issues)-- but I wanted to repost it here, because of the extraordinary number of posts here by extraordinarily skilled DIY repair guys, who have dealt with problems on their own IS250C vehicles:

​​​​​​I am considering buying a very low mileage IS250C convertible hardtop-- but upon reading the difficulties that posters here have described with getting parts to fix that top when it malfunctions (and the very high cost-- as much as ~$12,000-- to have it repaired by the dealer), I am wondering if I would be making a very big mistake? I am in no way qualified, capable, or inclined to do the kind of extraordinary diagnosis, and DIY repairs that some of the extremely skilled members of this forum have described-- is that a prerequisite for living with one of these cars (which are all ~10 years old or more now, given that Lexus has not made them since 2015)?

I had wanted to own a Lexus forever-- and I really love convertibles; I especially liked the idea of owning a hard-top convertible that gives many of the benefits of a hard top, but still offers top-down driving. I had the impression (from talking to the few people I know who have owned one of these cars) that the convertible top mechanism on this car was extremely reliable-- and mostly trouble-free... but, upon reading the various threads here talking about some owners' issues, it began to sound like a nightmare issue-- one that I would be well warned to avoid...

I first checked out this forum, because the car inspection guru at the repair shop-- where I planned to take this car to be inspected, before buying it-- told me to avoid this car-- he said he had only worked on one of these IS250C cars before-- and the top was a major issue for that owner-- he said "Don't buy one of those cars."

I am trying to figure out if that repair shop's sample size is very small-- and perhaps skewed. I realize that the threads I searched for on this site were for problems with the convertible top mechanism on the iS250C-- so, I had naturally selected discussions that highlighted that problem-- and perhaps those posters constitute only a very small percentage of the owners of IS250C vehicles-- with most of them having NOT had issues with their cars' tops... but I would like to hear from others, who have owned this car: Is the top relatively trouble-free and reliable-- or is it a maintenance nightmare waiting to happen?

I am buying this car to be driven by my wife (who loves convertibles, too)-- it needs to be reliable.

Thank you in advance, for your thoughts and perspective on this issue-- they are highly appreciated.
Old 02-10-24 | 05:27 PM
  #67  
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Originally Posted by LexusLatecomer
I posted this on another related thread on this forum (about IS250C convertible top issues)-- but I wanted to repost it here, because of the extraordinary number of posts here by extraordinarily skilled DIY repair guys, who have dealt with problems on their own IS250C vehicles:

​​​​​​I am considering buying a very low mileage IS250C convertible hardtop-- but upon reading the difficulties that posters here have described with getting parts to fix that top when it malfunctions (and the very high cost-- as much as ~$12,000-- to have it repaired by the dealer), I am wondering if I would be making a very big mistake? I am in no way qualified, capable, or inclined to do the kind of extraordinary diagnosis, and DIY repairs that some of the extremely skilled members of this forum have described-- is that a prerequisite for living with one of these cars (which are all ~10 years old or more now, given that Lexus has not made them since 2015)?

I had wanted to own a Lexus forever-- and I really love convertibles; I especially liked the idea of owning a hard-top convertible that gives many of the benefits of a hard top, but still offers top-down driving. I had the impression (from talking to the few people I know who have owned one of these cars) that the convertible top mechanism on this car was extremely reliable-- and mostly trouble-free... but, upon reading the various threads here talking about some owners' issues, it began to sound like a nightmare issue-- one that I would be well warned to avoid...

I first checked out this forum, because the car inspection guru at the repair shop-- where I planned to take this car to be inspected, before buying it-- told me to avoid this car-- he said he had only worked on one of these IS250C cars before-- and the top was a major issue for that owner-- he said "Don't buy one of those cars."

I am trying to figure out if that repair shop's sample size is very small-- and perhaps skewed. I realize that the threads I searched for on this site were for problems with the convertible top mechanism on the iS250C-- so, I had naturally selected discussions that highlighted that problem-- and perhaps those posters constitute only a very small percentage of the owners of IS250C vehicles-- with most of them having NOT had issues with their cars' tops... but I would like to hear from others, who have owned this car: Is the top relatively trouble-free and reliable-- or is it a maintenance nightmare waiting to happen?

I am buying this car to be driven by my wife (who loves convertibles, too)-- it needs to be reliable.

Thank you in advance, for your thoughts and perspective on this issue-- they are highly appreciated.
Avoid 250c. Try to find 350c if you can.
Old 02-11-24 | 12:46 PM
  #68  
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Default Why Do You Recommend the IS 350C over the IS 250C?

Originally Posted by imkIS350c
Avoid 250c. Try to find 350c if you can.
Can you tell me more about your advice? Does it have anything to do with the reliability of the convertible hardtop mechanism? That is what I am focused on/concerned about.... My wife does not need the extra power of the 3.5L motor-- which, as far as I am aware, is the only real difference between the IS 250C and the IS 350C-- and in fact, we would prefer the (slightly) better gas mileage that the IS 250C offers over the IS 350C...

I note that you have "350C" in your screen posting name-- which suggests that you own the 350C, not the 250C-- is that an accurate assumption? Can you provide more color on your recommendation? Is there any difference in the reliability of the cars? If not, I would actually prefer the smaller motor here.
Old 02-11-24 | 12:53 PM
  #69  
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It is reliability issue. 250c has carbon build up problem due to direct port injection whereas 350c V6 is a smooth strong engine. You should google 250c engine problems see. I would not try to save a bit gas but run into significant engine stalling problems.

As far as convertible, the mechanism should be similar for both vehicle.

I have 2010 350c. I love the vehicle. I dont have much traffic in my area and MPG is around 24. Happy to answer if you have further questions.
Old 02-11-24 | 01:07 PM
  #70  
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imkIS350C:

That is excellent color-- thank you for your quick response-- and deep insights on these two vehicles-- I had not heard about that problem with the 250C's engine design... I will have to research that, now...
Old 02-11-24 | 01:20 PM
  #71  
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Originally Posted by LexusLatecomer
imkIS350C:

That is excellent color-- thank you for your quick response-- and deep insights on these two vehicles-- I had not heard about that problem with the 250C's engine design... I will have to research that, now...
sounds great. Let me know if you have any questions. Try to look for melting dash problem too.
Old 02-11-24 | 01:38 PM
  #72  
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Is that problem specific to either the 250C or the 350C? (I would think the dash materials are the same on both)... Is that also something that may have been addressed in later models of this car? (I'd heard that the carbon buildup problem was more of problem in the first year-- e.g.- 2010-- and may have been addressed, in later years of the IS 250C's production run?)
Old 02-11-24 | 01:40 PM
  #73  
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Originally Posted by LexusLatecomer
imkIS350C:

That is excellent color-- thank you for your quick response-- and deep insights on these two vehicles-- I had not heard about that problem with the 250C's engine design... I will have to research that, now...
Originally Posted by LexusLatecomer
Is that problem specific to either the 250C or the 350C? (I would think the dash materials are the same on both)... Is that also something that may have been addressed in later models of this car? (I'd heard that the carbon buildup problem was more of problem in the first year-- e.g.- 2010-- and may have been addressed, in later years of the IS 250C's production run?)
Melting dash is a significant problem for both models. They fixed it after some years but don’t know which year. Carbon build up was always an issue for 250s because of the design.
Old 02-11-24 | 02:34 PM
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Does the carbon buildup problem get exacerbated by not using premium fuel (or conversely, does it get alleviated/prevented by making sure you always use premium fuel), as Lexus recommends for both the 250c and the 350C? If I use premium fuel, am I less likely to get carbon buildup in the 250C?
Old 02-11-24 | 05:09 PM
  #75  
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I doubt you can sidestep this issue simply by switching to premium fuel. From what I understand, the majority of people already use premium fuel because it's mandatory. However, I'm confident there are measures to alleviate it.

I would not gamble buying 250c because we cherish our Lexus cars for their dependability, and this detracts from the enjoyment.



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