I just found an semi-auto carwash center as jinjang/kepong.

Location is at BHP station at Jalan Kepong.

Google map location: 3.208068,101.653692

Price is cheap!! RM4 for normal card and RM6 for bigger suv/van.

First they will wash your car with soap a little. Then you drive the car into the auto-wash machine. After that you drive to the drying station where they will wipe dry and vacuum your car. Not sure if vacuum need to pay extra.

I haven't try yet....