There is a car wash function built in:

you enter the car wash, engine running normally, step on the brakes then you switch to Neutral when the transport system of the car wash got your car and release the park brake. Leave the key in the slot, otherwise the P will activate. You have 30 Minutes of "Neutral" now. all fellows having keyless go, the key has to be in the slot, otherwise no Neutral....
Then you may turn of the engine...

Give it a try first before you go to the car wash....

So long

Christian