Lexus LS400
Having trouble with your LS400 ECU?
There is a wide year range covered with this model vehicle, so the failures can be quite varied from one to another.
Either way, we are very successful with these and have an excellent track record.
Most of the time, we see these particular ECUs for shifting problems, knock sensor issues, misfires, and no start/no communication, among many other problems.
The overhaul approach we take will depend on the year model, as these DENSO-made units for Lexus and Toyota experience entirely different types of failures according to the year range. The process is basically always going to be a combination of repairs to the copper traces that make up the map of the board and replacement parts addressing whatever damage and/or conditions are present in the ECU.
The most popular '93 - '97 Lexus LS400 ECUs are prone to failure due to the original factory electrolytic capacitors. When they get to a certain age, the capacitors start slowly leaking an oily fluid that will eventually corrode the copper lines of the printed circuit board, as well as degrade and ruin the metals of any components saturated in the acidic chemical.
Only the old original factory capacitors from Nichicon, Rubicon or otherwise will cause this problem; these capacitors were all made in the 1980s and later wound up in various Japanese brand electronics and automotive control units in the early to mid '90s. This is not a problem with contemporary components.
After an ECU has been properly overhauled and the original capacitors replaced, the capacitor problem will not return.
On Lexus ECUs, we can transfer the security & VIN code for you.
This way you will not have to deal with any reprogramming, which can be expensive and sometimes problematic.
Repair & Return Service of your Lexus LS400 ECU
Cures shifting issues, knock sensor issues, false o2 sensor codes, misfires, electrolytic capacitor damage & more
Ships back out within 1-2 business days
Return shipping included
5 year warranty
To have your unit repaired, send your ECU to us at the address below. Please tape a note to it with your name & phone number, including a brief description of your symptoms.
After it arrives, we will inspect it and call you to notify you of what we find.
Foreign Auto Computer Repair
200 Private Road 7869 Ste. 101
Holly Lake Ranch, TX 75765
For more information, call (800)-241-6689 or text 903-216-6456