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Years ago I was battling a constant water leak that was not the sunroof drain. Ended up being the windshield cowl seals that had corroded/ deteriorated. Every time it rained, water would flow under the cowl and right onto the cabin air filter which ends up flooding the blower box and, ultimately, the passenger floor.
Tired of dealing with silicone, backer rod, and butyl tapes to try to seal the cowl to the glass (which always failed), I ended up taking a case from a old iPad, trimming it to fit between the firewall and the battery "hold down" threaded rod, and let it act as a cover for that damn opening. This way, any water that leaks past the cowl will, ultimately, hit the cover and drain away from that opening. I do not have pics of the actual cover in use as I have not opened the cowl (but will in time).
The irony is that on the older G35's, the plastic intake duct has a shroud over it to prevent this very thing. Learned this after the fact...
Edited 25 Dec '23 to add: This post explains the iPad Cover trick in detail, with pics.
Last edited by ILM-NC G37S; 12-25-2023 at 04:35 PM.
the hose is 3/8" and you need to get 3/8' barbs also if you aren't replacing thh entire hose like i did.
The barb is to connect to the old hose at the A pillar.
Thanks, and just to clarify, you don't need a replacement firewall grommet (74816-JU40B) anymore because you aren't feeding the hose to the firewall grommet (74816-JU40B) anymore right??
Thanks, and just to clarify, you don't need a replacement firewall grommet (74816-JU40B) anymore because you aren't feeding the hose to the firewall grommet (74816-JU40B) anymore right??
Correct. I actually left my original there. I just pulled the hose off it.
the hose is 3/8" and you need to get 3/8' barbs also if you aren't replacing thh entire hose like i did.
The barb is to connect to the old hose at the A pillar.
Is it necessary to take apart the car this thoroughly to perform this sunroof drain hose mod for both sides? I didn't expect you to remove the dash, both front seats, all the extra carpeting etc. I might not have enough $$ to pay the guy I've enlisted for help, lol, so I might have to skip driver side and just do the mod for front passenger side...... if you are cleaning the car and checking for mold/mildew then I guess it makes sense (I need to do this myself, but can't find anyone willing to help me deconstruct the car like you have done so), but if it's just to replace hosing is this absolutely necessary????
Is it necessary to take apart the car this thoroughly to perform this sunroof drain hose mod for both sides? I didn't expect you to remove the dash, both front seats, all the extra carpeting etc. I might not have enough $$ to pay the guy I've enlisted for help, lol, so I might have to skip driver side and just do the mod for front passenger side...... if you are cleaning the car and checking for mold/mildew then I guess it makes sense (I need to do this myself, but can't find anyone willing to help me deconstruct the car like you have done so), but if it's just to replace hosing is this absolutely necessary????
oh no, definitely not. I just had it out because i had to clean up the water that was sitting. Mine was clogged and leaking bad.
you only need to remove the A pillar. I see you're commenting in the other thread. There was another tutorial shared where the guy only did the a pillar.
i wanted to completely replace the whole hose, that's why I removed my headliner. its definitely not needed
the hose is 3/8" and you need to get 3/8' barbs also if you aren't replacing thh entire hose like i did.
The barb is to connect to the old hose at the A pillar.
Originally Posted by projectpanda13
oh no, definitely not. I just had it out because i had to clean up the water that was sitting. Mine was clogged and leaking bad.
you only need to remove the A pillar. I see you're commenting in the other thread. There was another tutorial shared where the guy only did the a pillar.
i wanted to completely replace the whole hose, that's why I removed my headliner. its definitely not needed
Good to know, and makes sense. What was the reason for replacing the default hose if it wasn't a faulty hose? Just wanted to put in brand new hosing, I guess?
Do you know how much longer it takes to do the hose attachment -> AC mod on the driver side? I'm guessing remove driver side A-pillar, vent, maybe dash??
I'm trying to budget time and money to see if passenger side can be done in 1-2 hours, driver side 1-2 hours for a total of 2-4 hours, or if it's going to take 4+ hours for both sides.
Good to know, and makes sense. What was the reason for replacing the default hose if it wasn't a faulty hose? Just wanted to put in brand new hosing, I guess?
Do you know how much longer it takes to do the hose attachment -> AC mod on the driver side? I'm guessing remove driver side A-pillar, vent, maybe dash??
I'm trying to budget time and money to see if passenger side can be done in 1-2 hours, driver side 1-2 hours for a total of 2-4 hours, or if it's going to take 4+ hours for both sides.
yea, i wanted to completely replace the whole hose with 1 continuous one. I was just being extra. lol
dash stays, doesn't need to be removed. you don't have to remove the vent either. Once you remove the A pillar, you'll see where you can install the barb fitting to connect the new hose.
You can route the hose down the same location and you'll see it
Not to highjack your thread but figured I would share it here since this post was helpful to me. it looks like the part has been superseded again i could no longer get the older one since the dealer didn't have it in stock and this was all that could be ordered New part has a flap and straight port
Not to highjack your thread but figured I would share it here since this post was helpful to me. it looks like the part has been superseded again i could no longer get the older one since the dealer didn't have it in stock and this was all that could be ordered New part has a flap and straight port
Your not hijacking anything, thank you for posting this!
I am really not sure what the point of that flap is.... I am guessing since they removed the inner baffle they needed an odd substitute (does not seem needed)?
Interesting to see the new one is made in the USA, instead of China.
Did not take long for them to update it.
Thanks for showing this!
Last edited by Krzysztof47; 01-04-2024 at 11:53 AM.
12-20-2023, 11:31 AM
