Also there is a service elevator in IKEA Alam Sutera, but it's hidden somewhere. I couldn't take the chance to take a photo and it's restricted by a keycard.
There are two different types of service elevators that TG told me. One is a smaller and normal MonoSpace hidden somewhere near the ice cream vending machine and cashiers. The other one is a massive TranSys MRL which can only be found in the middle of the basement car park. It uses six panels of doors and keycarded (cos it's only used by staff for returning trolleys from the car park).