Rear suspension ?Sc430 or LS430

SuelyM · July 22, 2020

Hi, I am hoping that some one mechanically minded can help. We have a 2003 sc430 with an unusual fault in the abs pathways on R OS rear suspension and driveshaft.This has been diagnosed by excellent Stuart from Lextech .It requires replace complete Rear R suspension hub,driveshaft and abs sensor(apologies if this doesn 't read correctly as we are not mechanics).I am trying to find secondhand parts as lexus dealer is too expensive and would require someone to put a myriad of parts together at a cost.

Given the no of sc430's around not many people have these parts if at all. We wondered if the LS430 would have similar spec parts as this would give more options when approaching breakers etc?

Is anyone able to advise please?

Thanks

The-Acre · July 22, 2020

3 hours ago, SuelyM said:

Hi, I am hoping that some one mechanically minded can help. We have a 2003 sc430 with an unusual fault in the abs pathways on R OS rear suspension and driveshaft.This has been diagnosed by excellent Stuart from Lextech .It requires replace complete Rear R suspension hub,driveshaft and abs sensor(apologies if this doesn 't read correctly as we are not mechanics).I am trying to find secondhand parts as lexus dealer is too expensive and would require someone to put a myriad of parts together at a cost.

Given the no of sc430's around not many people have these parts if at all. We wondered if the LS430 would have similar spec parts as this would give more options when approaching breakers etc?

Is anyone able to advise please?

Thanks

I'm only guessing here but as the LS in most cases has air suspension and the SC doesn't I'd be very surprised if they share much, if anything. Have you considered importing parts from the US, you'll get them in a few days and likely save 50%

SuelyM · July 22, 2020

Thanks for the info - I rather thought that they would not be same .import taxes might outweigh benefit from USA maybe?

Regards

Susan

The-Acre · July 22, 2020

33 minutes ago, SuelyM said:

Thanks for the info - I rather thought that they would not be same .import taxes might outweigh benefit from USA maybe?

Regards

Susan

Many of us have been using companies like Rockauto in the US. Apart from shipping costs their prices are far lower than here. If you choose FedEx for shipping the vat is paid upfront so nothing else to pay. It's worth checking on their website as it will calculate all costs.

Neil E · July 23, 2020

They are quite different to an LS but similar in some respects to the GS and IS.

I think I know what it is from your description but can't be sure without seeing the car.

One of the common ABS faults involves wear on the rear reluctor rings, is this what Stuart has diagnosed? New reluctor rings cost about £40 for 2 The ABS sensor monitors the rotation of the reluctor ring but when the rings wear, the sensors can't read it and so you usually get a rapid clicking noise when braking at low speed.

If the hub casing is very rusty, it might need to be replaced but sometimes not, it just depends on how old/bad it is..

If the rear suspension is worn (shocks, arms, bushes, ball joints, etc) and needs to be replaced then doing them at the same time is sensible but it's a separate issue to the ABS fault. There are a few known trusted resources who could help. The links below might be useful.

https://www.reluctorrings.com/cars/lexus

https://forum.lexusownersclub.com/threads/sc430-reluctor-ring-replacement.13323/page-2

SuelyM · July 24, 2020

The-Acre-Thanks for the advice -doesn't appear to have parts at present at Rockauto

In reply to Neil E .Thanks again but I know its not the reluctor rings.I admit I cannot describe exactly the fault (being non technical) but I know that the mechanic had to get an electrician and use specialist gear to diagnose having taken all 4 wheel hubs etc off and determined its R rear that has the fault.

Neil E · July 24, 2020

Hopefully someone with more SC knowledge than I will shed some light on it.

Has Lextech provided a list of the part numbers for the parts required? Some of the members are experts in sourcing genuine parts at favourable prices.

steve2006 · July 24, 2020

I can’t quite understand why a complete driveshaft is required for an ABS fault, the only 2 parts associated with the system are the toothed ring and the speed sensor which are both available as separate parts.

The complete driveshaft (Part number 4233024020) new from Amayama is as shown below plus shipping plus import duties.

There is however an SC430 being broken on eBay, it still has the rear wheels fitted so must still have the driveshaft on it however condition is of course unknown.

https://www.ebay.co.uk/itm/Breaking-Lexus-SC430-Black-leather-Convertable/283776017464?hash=item42125e6438:g:se8AAOSwszVePtMq

The speed sensor is part number 89545-24030 at around £220.00 also probably still on the breaker.

Sod’s law of course there are several drive shafts on eBay.com for around $60.00!

steve2006 · July 24, 2020

If you just need the reluctor ring here’s the company.

https://www.reluctorrings.com/cars/lexus?utm_source=LexusOwnersClubUK&utm_medium=ForumLinks

Neil E · July 24, 2020

Nice post Steve, as you say, they are the only components connected with the ABS on the right rear quarter. If the reluctor ring and the housing it sits in are really bad then replacing the whole thing is easier than a repair including the fitting of the reluctor ring but as you say, finding a good used one could be tricky and a false economy. Far better to install a new reluctor ring and clean the housing if possible. It's not an easy job but probably made slightly easier on a lift.

I suspect things were lost in translation. Perhaps all 4 wheels were removed to view the rings through the sensor points. Maybe the auto electrician determined the signal to the right rear sensor was the offending article. Lextech may have explained that the rear suspension links need to be disconnected from the hub assembly to do the job but it doesn't need to be replaced unless that's worn too and it has nothing to do with the ABS fault.

I had one of my reluctor rings renewed during a routine service and I think it came to about £150 with me supplying 2 rings using the same company that you linked to. I've replaced ABS sensors on other similar Lexus cars in minutes. Occasionally specs of dirt or debris from the reluctor housing can cause a fault on them but otherwise they seem to be quite robust. If Lextech needed help from an auto electrician then they may not have previous experience of this type of fault on an SC or just needed confirmation.

nicnac · July 27, 2020

On 7/24/2020 at 1:34 PM, SuelyM said:

The-Acre-Thanks for the advice -doesn't appear to have parts at present at Rockauto

In reply to Neil E .Thanks again but I know its not the reluctor rings.I admit I cannot describe exactly the fault (being non technical) but I know that the mechanic had to get an electrician and use specialist gear to diagnose having taken all 4 wheel hubs etc off and determined its R rear that has the fault.

I will give my 2 pence worth . . It has to be the reluctor rings ................. I have just replaced one on my 2006 SC and had to redo the other side cause the so called mechanic had changed the ring but not the bearing shield in which the reluctor ring revolves. You say you know its not the rings ............................. how do you know or are you just going by what youv been told ?

Edited July 27, 2020 by nicnac
add photos

Neil E · July 27, 2020

Hi Nick good clear pictures. Would expect nothing less. 🤣 👍

As I said above, maybe lost in translation. I think it's probably just the way it was explained in a 'non-technical' way but you would expect new reluctor rings to be on the required parts list.

nicnac · July 27, 2020

5 minutes ago, Neil E said:

Hi Nick good clear pictures. Would expect nothing less. 🤣 👍

As I said above, maybe lost in translation. I think it's probably just the way it was explained in a 'non-technical' way but you would expect new reluctor rings to be on the required parts list.

Bang on Neil , I was just reinforcing what you had concluded . Techstream woud only point to the sensor ..................... but not to the actual cause of the sensor malfunction !

royoftherovers · July 27, 2020

On 7/22/2020 at 11:21 AM, SuelyM said:

Hi, I am hoping that some one mechanically minded can help. We have a 2003 sc430 with an unusual fault in the abs pathways on R OS rear suspension and driveshaft.This has been diagnosed by excellent Stuart from Lextech .It requires replace complete Rear R suspension hub,driveshaft and abs sensor(apologies if this doesn 't read correctly as we are not mechanics).I am trying to find secondhand parts as lexus dealer is too expensive and would require someone to put a myriad of parts together at a cost.

Given the no of sc430's around not many people have these parts if at all. We wondered if the LS430 would have similar spec parts as this would give more options when approaching breakers etc?

Is anyone able to advise please?

Thanks

Susan,

You will not receive any better advice than from that given by Neil and Nic below.

Good luck.