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Sorry, I made mistake on my post #39. Don't know how I got wrong link, but at least the price was same $134.99 . So, let me try a again, this is the rear steering control ECU which was in the same car I purchased the ARS. It is 89182-30030 (112900-8502) and my own car have 89182-30040 (112900-8512). There might be minor difference but I checked from several dealers selling new part using my VIN and 89182-30030 does not fit.
This is from my car:
For the ECU, I don't really think it is the problem, my suggestion is to install the ARS unit first and see if you need an ECU or not. Unless you get a really cheap ECU like less than 300$ then don't miss the deal, otherwise the cheapest option is to install the ARS and see what happens afterwards.
This is exactly my plan. All the evidence indicates that only ARS unit needs to be replaced, not ECU. When I say all the evidence I mean those two cases in UK and one other in Finland I have explained earlier. Problem seems to be failed stroke sensor.
If I could find 89182-30040 with reasonable price, I would definitely buy it. Just in case. Let say under $300.
That listing on ebay shows it's returnable if you need to.
Yes, this is true. However, sellers do not deliver outside USA, to Finland. So I need to use proxy service. Proxy gives me address in USA. To deliver ARS from USA to Finland thru proxy including shipping will cost around $150. Honestly, I'm not sure if it can be returned from Finland and I would guess returning will cost same as sending it to Finland. If the part won't fit might be easier to sell it myself here in Europe.
Last edited by WhiteGS450; Dec 16, 2024 at 01:43 PM.
I found the thread I saw recently. Looks like you may want to protect and seal the Stroke Sensor on your replacement so it does not fail again, before you install. Not sure if you already saw this but it's good info from multiple 450h Owners that have the Rear Steering on their cars also.
I found the thread I saw recently. Looks like you may want to protect and seal the Stroke Sensor on your replacement so it does not fail again, before you install. Not sure if you already saw this but it's good info from multiple 450h Owners that have the Rear Steering on their cars also.
Thanks. I'm very familiar with the thread as I have been participating discussion there also .
You are absolutely right, every Lexus GS450H F-Sport owner should read the thread thru. There are really good and detailed analysis of the issue, detailed instructions with pictures how to replace ARS etc. This is also good reminder for the owners of Lexus GS450H F-Sport. If you do not face any issues yet, it might be good idea to protect and seal the stroke sensor before the issue start occurring.
Thanks. I'm very familiar with the thread as I have been participating discussion there also .
You are absolutely right, every Lexus GS450H F-Sport owner should read the thread thru. There are really good and detailed analysis of the issue, detailed instructions with pictures how to replace ARS etc. This is also good reminder for the owners of Lexus GS450H F-Sport. If you do not face any issues yet, it might be good idea to protect and seal the stroke sensor before the issue start occurring.
Only 'IF' the GS 450h has Dynamic Rear Steering, which is generally only found on GS 450h models in the UK and the Scandinavian region of northern Europe.
Last edited by bclexus; Dec 17, 2024 at 06:42 PM.
Reason: orthography
Thanks. I'm very familiar with the thread as I have been participating discussion there also .
You are absolutely right, every Lexus GS450H F-Sport owner should read the thread thru. There are really good and detailed analysis of the issue, detailed instructions with pictures how to replace ARS etc. This is also good reminder for the owners of Lexus GS450H F-Sport. If you do not face any issues yet, it might be good idea to protect and seal the stroke sensor before the issue start occurring.
I'm glad to see you found a solution with the parts. This would be so frustrating to me if it happen to me.
With the 450h DRS and the newer models I am always glad I have every option almost I need on my 13 Lux. When I see all those other Tech options like this and Dynamic Cruise, and other I am frankly glad I don't have and don't miss it at all, as I would not need it. Those sensor as they get older always fail. I still have a very complete Extended Service contract coverage on my 13 for still some time to go now. I figure if something goes wrong major it will be right after the Contract ends. But, I plan to still extend it again.
BTW: a good sealer for that Stroke sensor seal would be 3M Marine Caulk. Had a few Cabin Cruiser boats and that stuff actually settles and seals in water. Also resistant to salt and other contaminates. After this that 450h should be good to go for a long while. At least it's not a German car, repair after repair, after repair, endless.
It was me , I bought it immediately when I saw you posting about it. Why wait? Extremely difficult to find spare part and price was ... let say more than fine comparing to 19 000 euros Lexus is asking for it . Seller does do not deliver to Finland, but I'm using proxy service. Hopefully all works fine.
@bclexus You have been so kind and helpful, I really appreciate it. Thank you and thanks for all others helping here.
So, now I'm waiting to get a part to Finland and then we'll see what happens
Originally Posted by bclexus
@WhiteGS450 - You don't know how much that pleases me!
It has made my day for sure! I am so glad it was you that bought the ARS.
Let us know when the ARS arrives safely by the proxy service from South Carolina to Finland.
I hope this is able to put your car back on the road in Finland for many more years.
If you need to replace the DSR ECU that shouldn't a problem.
Are you going to replace the ARS yourself or will you have your Lexus dealer's service department do it for you so they can perform the calibration?
Hoping all goes well!
@WhiteGS450 - When are you expecting to receive the ARS from your proxy shipper? I'm guessing you are able to track the shipment's journey from South Carolina in the U.S. to you in Finland.
BTW: a good sealer for that Stroke sensor seal would be 3M Marine Caulk.
We use that same sealant to waterproof the guts of some dampers on some machines called "RTOs" (Regenerative Thermal Oxidizers) at my work. Started using it when one of the German OEM reps recommended it and we use it in plenty of places now. Good stuff!
We use that same sealant to waterproof the guts of some dampers on some machines called "RTOs" (Regenerative Thermal Oxidizers) at my work. Started using it when one of the German OEM reps recommended it and we use it in plenty of places now. Good stuff!
Good stuff, but 3M makes many different versions of Marine adhesives and sealants.
3M #5200 or #5200 FC (Fast Cure) is likely the best choice to protect against water and contaminate intrusion, but it creates a high-strength permanent bond (see video below).
This video should help make an informed decision on which 3M sealant to use.
When are you expecting to receive the ARS from your proxy shipper? I'm guessing you are able to track the shipment's journey from South Carolina in the U.S. to you in Finland.
Maybe short update in order. UPS delivered the part on December 27th. It looked practically brand new if you compare the part under my car after 12 years of water, ice, snow, slush and road salt. The Toyota repair shop replaced the part today. They did the necessary calibrations and now all good. Problem disappeared. No error codes, all systems working normally - driving smoothly again. Control module / ECU worked fine with new part, so there was no need to replace ECU, as expected.
Whats next? I will start my winter vacation in warm and sunny Thailand with 32C (90F) pure sun shining. When I come back I start the process to sell the car and find the new one - new Lexus.
Once again, many thanks to all of you who helped me with this problem. Special thanks to @bclexus
Last edited by WhiteGS450; Jan 13, 2025 at 10:39 AM.
Maybe short update in order. UPS delivered the part on December 27th. It looked practically brand new if you compare the part under my car after 12 years of water, ice, snow, slush and road salt. The Toyota repair shop replaced the part today. They did the necessary calibrations and now all good. Problem disappeared. No error codes, all systems working normally - driving smoothly again. Control module / ECU worked fine with new part, so there was no need to replace ECU, as expected.
Whats next? I will start my winter vacation in warm and sunny Thailand with 32C (90F) pure sun shining. When I come back I start the process to sell the car and find the new one - new Lexus.
Once again, many thanks to all of you who helped me with this problem. Special thanks to @bclexus
@WhiteGS450 - Thank you for the update. I've been wondering what the outcome will be. Now I know!
Thanks for the special thanks from you! I appreciate that... It made the time I spent helping worthwhile...
Wishing you a pleasant winter vacation in sunny Thailand.
Let us know what your next Lexus you plan to get will be.
. So, let me try a again, this is the rear steering control ECU which was in the same car I purchased the ARS. It is 89182-30030 (112900-8502) and my own car have 89182-30040 (112900-8512). There might be minor difference but I checked from several dealers selling new part using my VIN and 89182-30030 does not fit.
.
, I bought it immediately when I saw you posting about it. Why wait? Extremely difficult to find spare part and price was ... let say more than fine comparing to 19 000 euros Lexus is asking for it 
- driving smoothly again. Control module / ECU worked fine with new part, so there was no need to replace ECU, as expected.
