RR Defog

XanderWiFi · 04-15-2012, 09:51 AM

While searching for blown lighting fuses, something presented itself to me: in the 2004 3.4 fuse number 33 which is a 30A is titled "RR Defog" mine is gone. Does my common sense interpret correctly that this fuse links to the rear defrost?

My rear defrost has not worked in a long time. I was planning to tear everything apart with the how to in due time, but if this is the fix I need than it will be much easier. I don't remember removing the fuse...I know my defrost worked at one point...we will see.

Shiwnath · 04-15-2012, 02:55 PM

I do recall the rear defogger being a 30A fuse... I'm pretty sure that is in fact the one.. I think the little LED for the defogger on the climate control won't even come on if that fuse is blown/missing when you press the button. Try replacing thr fuse and check if it works. If not, redog has a really good tutorial on how to replace the actual defogger module.. It's not too hard, I did it a while back.. I got one from a junkyard 2 years ago and it hasn't failed me since then.

XanderWiFi · 04-15-2012, 04:32 PM

That's the plan. What's crazy is the led has been coming on...it just stopped defrosting. We shall see. It's summer now so I won't have to worry about it for a while.

Shiwnath · 04-15-2012, 05:53 PM

I could be wrong on that... I fixed the rear defogger back in 2010 so it's been a while. What I'd expect is for the LED to not light up when the defogger is pressed which would indicate that there is something wrong with the circuit such as a blown fuse. In any case, it's common for the defogger module to crap out... When I pulled my defogger module out, the green wire going to it completely melted off.