I own a 2002 Jazz CVT. It allegedly had a trans replacement at about 54,000km when purchased 2011 but is now at 84,000km with a trace of shudder. The original Owners handbook change interval is 80,000 km, or 40,000 for ”severe” use. Anyway, an oil change seems first step to remedy. In the modern manner agents guard info with great secrecy; it is difficult to get past glib front staff and talk directly to technical personnel. A simple drain only drains half the total volume, but presumably this is the normal service intended. The term flush is bandied about but I have been unable to determine just what this comprises. Instead of ½ remaining, a double draining would still result in about ¼ old oil , hardly a flush, and very wasteful at the price. Also talk of some sort of stall test and other rituals. Anybody know just what the agencies do when they “flush” and refill? Does some sort of deliberate slipping rejuvenate the friction surfaces?
Does it significantly assist to preserve the clutch if neutral is engaged at stops? Does light rubbing cause the change of characteristic?
(for those unfamiliar, the clutch is a multiplate affair, with steel and friction discs in oil, like an old motor cycle, but is placed following the CV mechanism instead of before, and is actuated by hydraulics)
