GWS191-BEXQH
I came back to update that the CEL as well as the dreaded check hybrid system warning went away after i changed the auxiliary oil pump. As it turn out, the change of the transmission fluid also helped greatly in making the general jerkiness that i have come to associate with the car lately, go away as well. The ready indicator now comes on pronto and the cruise control now works.
Now i have got smaller issues to contend with.
1. The car seems to handle like a boat and i can feel every imperfection on the road. It wasn't like this before. I am trying to check and find out whether this car has APSSS. It is part 89241B right from the link below.
http://jp-carparts.com/lexus/partlist.php?maker=lexus&type=334110&cartype=2&fig=8419
2. It seem like the hybrid traction battery pack isn't charging very well or rather it isn't holding charge very well. Of course the battery indicator in the energy flow console isn't as exact as a percentage display. I took the car for a spin and i verifed the hybrid system works. The battery charges and discharges according to the road situations i.e. (the Lexus Hybrid Drive LHD works) but i would find the battery state of charge (SOC) changing rather rapidly to my concern.
When i thought the battery is comfortably like 5 or 6 blue bars, it will rapidly change to 1 or 2 purple bars after helping to drive the rear wheels for a bit. I have yet to try to go for a really long drive to check whether i can get it up to green. How long in terms of a drive would you guys need to make it green from purple? The worst case scenario i think is to recondition the battery. A new battery pack is 3.5k USD