I've never played with one of these TMCC Giraffe Cars from 1998 until very recently, and the one I have seems to exhibit some strange behavior.
The short version: the ElectroCouplers (and the sounds that go along with them) only work when addressing the car as part of a Train/Lash-up. They don't work when addressing the car regularly as an Engine.
I can think of two conclusions:
1) This is normal behavior. (Note the instruction booklet seems to indicate that the ElectroCouplers should exhibit normal behavior, but it's contradictory in some sections.)
2) There's a reprogramming code that needs reset in order for the ElectroCouplers to activate normally. Unfortunately, this car takes an unusual R2LC (C04?) and it might have an unusual code for reprogramming, and I can't find where anything has been published about this.
Any thoughts? Thanks!
TRW