I live in Auckland, New Zealand & over the past 15 years we in NZ have seen a lot of Japanese Domestic Market (JDM) cars coming in with all sorts of extras - Mazda MX6 4WS 4WD, Subaru STI works cars, Toyota Soarer etc etc most not available in the USA or Canada.
Well today I took my baby into our local Subaru dealer to get what I suspected was a wheel bearing replaced - mines a red 1996 with full leather & moon roof with 110,000kms on the clock.
Yes they confirmed that the bearing need replacing, but while I was there the service guy showed me 2 4WS versions up on the hoist both with the same rear steering problem - 1 had been there for nearly 4 weeks!!!! the other for 1 week.
The service guy said that the only information that they could find was on the net & it was in Japanese - even after translating it, it actually could not help the sort out what was wrong, they suspected the rear steering electronics "black box" - they are no longer susported from Japan as 4WS was only available on approx 250 cars on the JDM in 1992 - so buyer beware, or if anyone happens to see a wrecked 4WS version then let the others know as the electronics & rear stearing box (which sits behind the rear axle) will be as rare as hens teeth.....
Subaru here in NZ are sending both ECUs back to Japan to be serviced (hopefully!!) & then get the cars back on the road.
Hope this makes interesting reading for someone...
Steve in New Zealand