So my rear defrost button light went out today on my 2012 fit and I'm not sure 1. how to replace it and 2. what part number the bulb is.

I see many threads about the 1st gen fit, but none (that I can find) about the 2nd gen fit.

Does anyone know the process? I assume I'll have to take the entire heater control panel off to take the buttons out to replace the bulbs?

Also, does anyone know the part number? Looking at the parts diagram from heeltoeauto, it's not clear which bulb it is. The bulbs for the AC button are clearly marked as parts #1 (35852-TK6-A01) and #2 (35853-TK6-A01) though. I don't even see the buttons as parts that I can purchase, for some reason.

heeltoeauto part diagram:
https://oem.heeltoeauto.com/auto-par...r-control-scat

(I also checked bernardi online honda parts but same results)

Or are the bulbs in the defrost button not replaceable and I'll have to replace the entire button?

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EDIT: Made my own guide and put it on a personal site for replacing the light.

https://investomatica.com/how-to-rep...da-fit-2nd-gen

Hope someone finds this useful!

 

On the first gen the manual shows taking a lot of stuff apart, but if you take the glovebox down like your changing the cabin filter, you can (If your coordinated,, LOL) Reach from behind and push the switch out, Its fiddly but easier than taking the dash out, basically you have to remove almost the same stuff as you would to replace the stereo.. So if you look at a how-to for that ,, you'll see the steps, the switch comes out with the dash panel, it doesn't have to come all the way out just far enough to get the switch popped free.. The bulbs are like a 1/4 turn twist lock thing to get out.. fairly easy once you can access the switch.. On mine the switch has a catch on both sides that releases it from the dash.

 

Interesting. I'll try reaching through the glovebox hole. Do you know what part number the bulb is for the 2nd gen? Super confused on this part.

 

FYI, for future reference, I've found the part numbers for the bulbs.

https://oem.heeltoeauto.com/auto-par...at/switch-scat

Apparently, they were under the "switch" category. 2 bulbs for the defrost button.

35850-TF0-J01 / Bulb (14V 60MA)

35850-SMA-J11 / Bulb Comp

Couldn't reach through the glove box to push the button out. Will have to try loosening the radio to get more space.

 

I had to replace both the defrost and the AC....

Remove the radio (do a search for instructions)
Once the radio is removed you have full access to the switch. You need to pop the switch out of the console.
Once the switch is out, if i remember correctly you need to take the switch apart, and then you can swap the bulb... make sure to test it before reassembling everything.

 

Is the rear defrost/heated mirror button the one you are talking about? I noticed mine doesn't light up with the dash lights since i got my fit a couple months ago. I didn't know if it was supposed to but the logos on the switch seem to be more of a solid white than a grey transparent.

 

Yes, thats the button. There is a little orange light that should turn on (similar to A/C, just orange)

 

Yeah my little orange light turns on when I push the switch in but does your actual switch light up with the rest of the dash lights when you turn the lights on?

 

Yea, the text and icon for the defrost button light up when you turn the lights on. It is fairly faint though, so it is hard to see during the day. (very easy to see at night) There is then a separate circle light to the right of the text and icon when you actually push the defrost button in.

However, my rear defrost button only toggles the defrost/defogger for the rear window. I don't think US fits have heated mirrors.

 

Finally managed to replace the bulb! Took me 2 and a half hours since I wasn't sure what I was doing. I found that loosening the radio wasn't enough. I had to pry out the right side of the heater control panel too in order to get my hand behind the button and push it out. I'll add instructions and pictures to the top post as reference so that others who have the same issue can know what to do. Hopefully this helps!

 

Wish I had heated mirrors

 

I found I could skip the whole "remove the radio" travail by just dropping the lower glove box, then reaching in, locating the wire connector on the back of the switch, and pushing it out enough so I could pull it from the front.

Thanks for the links to buy the bulbs!

 

Thanks for mentioning you could bypass the radio removal. I just removed my switch via the same method; just need to move your hand around until you can get good leverage against the back of the switch!

 

+10000000 internets for asking a question and then answering it yourself and leaving detailed instructions for the rest of us!!

 

Has to be one of the better write ups. Thanks

 

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Hope someone finds this useful! [/QUOTE]

Thank you OP for this very handy post!
I was stuck at how to open up the switch and your photos helped!
I installed LEDs in place of the original bulbs.

 

Most awesome! My B bulb went out but I'll do both Y and B to save on future labor. Thank you so much for the extra work you did to post this up.