Anybody else have this happen?
In the past 2.5 yrs I've had this car (2013 ls460) sometimes at a car wash the yellow turn signals will flash once then twice as I'm going around the car, the same lights that flash with lock/unlock.
At first I thought water intrusion but that wasn't the case, everything was dry as a popcorn fart front and rear in all the usual expected areas. Then I thought the water pressure was locking the door using the black button on the outside of the handle and re-unlocking when the door wasn't opened.I don't think that's it either because it takes a bit of force with a finger or thumb. It happened again this morning and it was pretty loud in there, a manual car wash but I don't think I heard the lock/unlock beep. I'm going to pay closer attention next time and have a plan going in but was just curious if this has happened to anyone else?

 

You may be accidentally hitting your key to lock/unlock the car when washing it? Also check your door lock settings in your infotainment.

I guess its possible that the capacitive touch is transmitting thru the water stream into the pressure washer hose (if it's metal)?

It could also be this (from owners manual)
Auto Re-lock Timer When the doors are unlocked and not opened: ��They will automatically re-lock in 120 seconds � � ��They will automatically re-lock in 60 seconds (Standard) ��They will automatically re-lock in 30 seconds ��They will not re-lock = Of

 

Forgot to mention I've been using a card key for almost 2 yrs, no buttons to push.

 

Your owner's manual cautions that this is normal:

 

Thanks for finding that, I'm glad to hear it's a normal thing.

 

It happens on my LS, but also on my Jeep and my Ram 2500, all of which have proximity sensors for the door locks. If you watch other cars in the car wash you will see their lights flash as the guy goes around spraying them.