Hi there,
Been struggling to fix the fault on my 2005 RX400H SE CVT which has the Check VSC System errors on the dash (pic below) and the fault code
C1253 Hydroboost motor pump relay fault when scanned.
We fitted a couple of second hand ABS pumps but the codes just got worse showing:
Scanner - Antilock Brakes - DTC List
C1203 - Engine Control System Communication Circuit Fault
C1253 - Hydro Boost Pump Motor Relay Fault
C1256 - Accumulator Low Pressure Fault
C1345 - Linear Valve Offset Not Learned
My local Lexus specialist is stumped and he said it would be best to get Lexus to diagnose the problem.
Lexus Croydon have now diagnosed it and say it is the skid control ECU and have quoted £2600 + fitting.(!)
(they tried swapping the relay first in with the diagnostics fee)
My question is if the skid control ECU is coded to the car or if I can fit a second hand unit?
If it is coded can anyone recommend a specialist who can do the coding or is that Lexus main dealer only?
London/SE area.
Help appreciated.
regards, Gerald.
