Gud day everyone.... first post here.
Yesterday I took my car to a car wash and told them them to clean up the plastic covering on the engine.... by the time I came back the dude had used soap and water ....a short drive after leaving there the car started delaying in transmission and went off... so I turned it back on and placed my foot on the gas pedal for a bit to warmup... all seemed fine until another short drive after.... so here’s where the problem is, now the “A/T OIl TRANS” indicator is turned on the dash and wen I put it into gear it’s sluggish to respond, I hv to fire it up a bit before it leaves d spot but reverse is the case in reverse. When in reverse it picks up jut fine.... please can I get some help Bcz my mechanic is not that learned and doesn’t know a lot bout these signs but he is a damn good mechanic

Sorry bout the lengthy message but I wud really appreciate some help