The other day the wife was driving the Odyssey home from Starbucks and bam!! When she used the left blinker the hazard lights, passenger side view camera, windshield wipers (front and back), windshield washer solution pumps (front and back), and doors lock and unlock. When the van is in park both the left and right blinker cause this issue. When the van is in drive only the left blinker causes this, the right blinker activates the side view camera. I tried replacing the turn signal switch but that didn't resolve the issue. I've check almost all of the fuses and can't find anything that is burnt... Have an appointment with the dealership next week but was hoping to resolve this issue without the added labor bill. Does anyone have any ideas of what this could be? Or had similar issues with their van? Thank You.

*Update* - Forgot to mention when I first turn the car on that the front and rear wipers both turn on briefly. Also this Odyssey is has the key less entry system.

 

Likely a failed MICU. It is the fuse block under the dash that has some smarts in it that run the show. About a $400 part and you will need to have the immobilizer reprogrammed to recognize the new MICU.

 

The dealership determined that it was the MICU (Multiplex Integrated Control Unit) located on the drivers side. Part replaced and the electronics are working again. The part was $400... Labor and part with oil charge were around $800. Hope this helps someone that has this problem in the future. The part number was: 38200-TK8-A23