As tplcaik mentioned, goto your friendly accessories or workshop and ask for the non-original power window module with metal plate/bracket instead of the original black plastic one. It also comes with the tried & tested, reliable old-school scissors-type arm instead of Waja's "hi-tech" pulley & cable system.

My colleague's Waja 1.6 (A) 4G18P, which is around 6 yrs old, has this problem of the ICE knobs gone haywire- u can turn the knob in 1 direction to adjust the volume or bass/treble/balance, but the volume bass etc. can go up or down as they like. So now only the volume buttons on the steering can function properly. Anyone else experienced this? Is it due to it being frequently parked under the hot hot sun?