These cars are getting old, ALL of the LS400's are prone to the capacitors failing at their ages, less common on the 1999-2000 years.
You will need to have your ECU professionally rebuilt by a company or person that knows what they are doing. The solder has to go through all 4 layers of the PCB (board/core) and the capacitors need to be low ESR, authentic Japanese from Nichicon, Panasonic, or Nippon Chemicon, I personally prefer nichicon as PC motherboard manufacturers use them in their top end boards for reliability and performance.
Even if you buy a remanufactured, salvage, or a new ECU (if you can find one) they will likely still have the older caps in them that tend to leak over time.
Check ClubLexus and LexusOwnersClub for more detailed information on this, it is a well documented issue with these aging cars.
These cars are getting old, ALL of the LS400's are prone to the capacitors failing at their ages, less common on the 1999-2000 years.
You will need to have your ECU professionally rebuilt by a company or person that knows what they are doing. The solder has to go through all 4 layers of the PCB (board/core) and the capacitors need to be low ESR, authentic Japanese from Nichicon, Panasonic, or Nippon Chemicon, I personally prefer nichicon as PC motherboard manufacturers use them in their top end boards for reliability and performance.
Even if you buy a remanufactured, salvage, or a new ECU (if you can find one) they will likely still have the older caps in them that tend to leak over time.
Check ClubLexus and LexusOwnersClub for more detailed information on this, it is a well documented issue with these aging cars.
- John G., BRADENTON, FL, US