Dear all,
I have replaced the battery at TCM, took the wet cell and enjoy 25% discount so paid about $84 for it.
As the battery is failing, warning lights will start to come on intermittently and flickering. When i do full lock during parking or U turn, the steering will "bounce back" once u full lock and the "PS" warning light comes on. Change out to battery and solved everything.
I guess once my warranty is over and no more discount, it is not worth replacing the battery at TCM already, cos it is $105 for wet cell and $180 for a MF battery!
Cheers!