Hi there all Sifus....




I found this web by accident long time ago n totally forgot about this form web.




Ok used to owned LS400 92 (used car) but sold it already as to many problems and mostly the car will at the w/shop rather than been driven. So I can’t cope with the repair cost and bought another LS400 95 (UCF21). Car runs perfect until my ECU was out. Doing around 120k KM..(KM as I’m from Asia) Called up a friend and try to use his ECU and my car runs perfect and when he installed mine, his car was running crazy. (Car will not move in D & 2 except for 3rd and L) R is ok though.. and all warning ⚠️ indicators is like disco light - on and off.. So I can confirm that it was the ECU. Yamae had compiled very good info for this ECU part number. 👍👍👍..




The only problem is that my ECU part number wasn’t in that list. Mine came with 500241 and same goes to my friend. Had tried to look for this ECU here and there but no luck and not even close of finding it except for brand new that is crazy expensive.. really crazy,ridiculous, damn expensive..😱😱😱..




So really need some guidance on which ECU I can use without any issues to interchange for mine. Car had been sitting in the wshop since November last year 😖😪😩😫.... Had tried to repair the ECU but the board is in really bad condition as the capacitor had ruin the board. Send it to few COUNTRIES... including US...but end up being ship back to me untouched. Was told I must look 👀 for exactly same ECU part number by this repairer company in order for the car to run smooth.. 😓😓😓😓😓😓




So really appreciate if anyone can give me some input.. 🙏🏻🙏🏻🙏🏻

Hi Yamae,

ok 1st of all, thanks for the respond. Ok to answer ur question
1) RHS - yes
2) Shud post earlier - only last November car ECU went out. Car was doing fine before that, all these years actually.

So I can try to interchange these ECU with the one that u mentioned. Ok will update on my search if I bump into one.. just crossing my fingers... 🤞🤞🤞..

Again Yamae, very much thank you for the response n info... 😊😊😊

Hi Yamae

Ok found a lot of this model and wondering why car are the same model UCF21 but originally came with this. Mine totally different and super hard to look for.

rgds


https://www.ebay.com/itm/LEXUS-LS400....c100167.m2940

Wow....Yamae...u managed to look for 1 though it’s been only few days...very much thanks.. ������

Yup that’s ridiculously expensive for 2nd hand ECU plus never know how long it’ll last before the capacitor starts to leak out..ok I found this person from eBay that mentioned all ECU LS400 from all model he can repair. I had email him regarding this board of my ECU and still waiting for his response. Hope I’ll get good news from him. Will update here for any update. And if he can do it I believe it’ll help a lot of LS owners in here. As this car is a bit aged but to me it’s still much better than newer car nowadays like my other car, the Camry Hybrid. This LS to me is much more comfortable than this Camry..just in my own opinion... ������

������

Just some update....

Received email from Toyota. They told me that the ECU I’m looking for is in their stock n brand new still wraps. Unfortunately the warranty is only maxed to 10 years. And as my ...jaws fall apart when they told me the price tag. With insurance plus shipping to my doorstep 🚪.. it’s sumwher around US 3900 to US 4200....😂😂😂

Ok so I might or better say I can try to use the 50221 ECU right. Ok the person on eBay also had responded. Mine might not be able to be repair as capacitor and some other electronics might be replaceable but when it come to repair the board, there’s nothing he can do about it but to look for identical ECU which I did and the one u found that is too expensive. Toyota haven’t respond to my question regarding using other ECU. They only insist me of getting the one they have in stocks now. Anyway I will try purchase the 50221 and hope for the best result...(crossing my fingers now.. ������)

Will make the purchase by this week.

thank you for ur amazing support Yamae... ������