Hello,
I bought a 1999 Lexus LS400 1 and a haft year ago. It was very reliable and I never had a problem with it.
I got a problem with the wiper control. I replaced the MPX body control to fix the problem. After that my remote key stop working. I ignored the problem and keep using the car. Two days ago, a technician reprogram my remote key and make it work again. (doors, trunk, locks, all worked perfectly). I started my car and was very happy to drive home. In the evening, when I got in the car, the car cranked but didn't start.
Is there any chance that the immobiliser system is causing problem?
When I put the key in, the security light turns off as usual.
I checked all relays and the battery and all work well. Except for the fuel pump relay that not powered when my key is in postion On. But I think this is normal.
I suspect that immobiliser system or my ECM is causing problem because my car worked very well before my remote key is reprogammed. I don't know what to do now. I live in Vietnam and it's hard to find a mechanic to fix my LS400.
I intend to replace a new ECM + key and I found this link on ebay:
http://www.ebay.com/itm/191737878103
However, I also found that there are variuos part number of the ECM for the North American market:
I haven't check what is the part number of my ECM .IKindly let me know whether the ECM part number 89661-50531 can replace the ECM part number 89661-50502 or not?
Many thanks!
