smokeydog

Hope you guys can help me with the turn lights issue I have with my Acura MDX 2012 model.
When the headlights are in OFF mode (not on Auto or ON or Parking mode) both the driver and passenger side turn lights function correctly, and the hazard lights work as expected.

However when the Headlight mode is in Auto/On/Parking mode:

1. right(passenger) side turn signals(front and rear) stay lit all the time, does not turn on/off.
2. left (driver)side turn signals does not turn on/off; at times may blink just one.
3. Hazard lights do not blink ( right stay lit, left does turn on or blink).

Considering that the turn lights function correctly in headlights OFF mode, I ruled out bulb or wiring issues. I am assuming the most likely culprit could be the relay.

Appreciate any help based on your past experience. Thanks much !

Ron A

Welcome to the forums. Your thread has been moved to the model specific forum for better response.

zeta

iTrader: (1)

Not sure of the issue; however, #13 below is designated as the 'lighting & turn switch assembly' which could be faulty / worn?
Combination Switch - 2012 Acura MDX 5 Door BASE KA 6AT (acurapartswarehouse.com)

smokeydog

Thank you zeta. I suspect it's the lighting & turn switch assembly. I replaced the relay with no luck. The turn switch assembly is on the way and hope to replace it in next 2 days

smokeydog

Replacing the switch ( and the relay) did NOT fix the issue. Should I suspect the circuit board in the rear trunk space ? I have noticed rain water seeping in through the roof and drenching the rear trunk fuse box for past 2-3 years.( of course this was fixed now). I have a feeling the rain water may have damaged the circuit board.
Appreciate any wiring diagram for the turn lights so I understand how the circuit board in the rear trunk is related.

Thanks much for your help.