I'm having an issue on my 2016 Accord Touring where the auto dim feature of the rear view mirror stopped working. I noticed it yesterday while on my way work early in the morning when it was still dark out. The mirror wasn't dimming the high beams behind me and I noticed that the green indicator light is completely turned off. So there is not status indication from the mirror, which leads me to believe that it is not receiving power at all.

Before I take it to the dealership, I wanted to check and see if it could be blown fuse in one of the fuse boxes. The problem is that I can't determine which fuse socket corresponds to the rear view mirror. Honda's manual for 2016 Accords does not specify on the diagram which fuse goes to the auto dim mirror and I cannot find any solid information online either. Are there any Honda Accord experts that can point me in the right direction? I'm hoping to be able to resolve the power failure issue for my auto dimming mirror on my own without having to spend extra time/money at the dealership.

 

It may not be due to a blown fuse. The fuse (Under-dash Fuse No. B5 (7.5A)) that provides ignition power to the Auto-High Beam Control Unit (built into the rear view mirror), also protects many other circuits. There would be many other things not functioning if that fuse was blown.

 

@tech8 Thanks for the credible answer. This sounds like a job for Honda Dealership! At least I can rest easy knowing I tried.

 

Quick follow-up question...how would I locate fuse no. B5? It isn't written on the fuse diagram.

 

Can anyone show me where fuse B5 is located on the fuse box under the steering wheel? I keep hearing people refer to it, but it isn't clearly marked on the fuse diagram.

2016 Honda Accord Touring