I have now owned my nissan for nearly a year. It has come up with this hicas problem many times. I had it looked at, they put in a hi powered....can't remember what they put in now...anyway it seemed to have fixed the problem, to the point where I took the car on a trip from Brisbane to Wagga Wagga NSW. Went great, I didn't expereince any problems. I have read many of the other problems that people have with HICAS and that isnt what I am experencing with mine. When the HICAS light comes on in my car the whole system shuts down. Radio shuts off, steering seems to lock (felt mostly if you are turning a corner when the light flashes on) and I can hear clicking when this happens. I have traced the clicking noise to a relay box that is in the boot right next to the rear left hand lights. The problem I am facing now is that it has gotten that bad that the whole car shut down, wont start (not even turn over) I also have a kill switch in my car, it gives you 15 secs from the time that you press the key pad to start the car, it also locks my car, now this plays up also, at times locking me in my car.
I Have come to love and hate my car, it is a Nissan skyline 4 door automatic, turbo GTS-4. It has all the standard features, power steering, power windows air con, all wheel drive.
I can't say that my problem with the HICAS light is the same as what I have read as my car is behaving differently. I have printed out a self diognosis and ran the test, no response from my car.
Any ideas before I take it back to my mechanic would be much appreciated.