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View Full Version : B pillar rust (black part on doors)- anyone else?



sol_searchin
04-20-2011, 12:37 AM
Before I dig into this shit, anyone else deal with this? I was hoping not to replace the entire door shell... Anyone else fix this crap? advice?

Thrizzl3
04-20-2011, 12:41 AM
i had mine done..it was reallllly bad i dont think they replaced the whole door when they did the warranty work

Takumi616
04-20-2011, 12:46 AM
+1... getting warranty work done as we speak at Agincourt Mazda. Brought my ride there on Monday picking it up tomorrow. B pillar rust and back fenders done as well. I take care of my car pretty well and it's parked indoor and my car still rust. My warranty will end by year end so decided to get it done now. :)

Really looking forward to see the outcome tomorrow. :headbang


i had mine done..it was reallllly bad i dont think they replaced the whole door when they did the warranty work

bman13
04-20-2011, 01:17 AM
+1... getting warranty work done as we speak at Agincourt Mazda. Brought my ride there on Monday picking it up tomorrow. B pillar rust and back fenders done as well. I take care of my car pretty well and it's parked indoor and my car still rust. My warranty will end by year end so decided to get it done now. :)

Really looking forward to see the outcome tomorrow. :headbang

Rust warranty is longer (correct me if I'm wrong).

sol_searchin
04-20-2011, 01:19 AM
My warranty is over (extended warranty to 160k dec 2010 only have 140k on it) this is actually for my Mazda 6 lol, big piss off to see the rust only on the pillars!!! Mazda Canada here I come to bitch!

Takumi616
04-20-2011, 01:24 AM
5 year manufacturer warranty on paint/rust. I purchased a 2007 sedan brand new on Nov 2006.


Rust warranty is longer (correct me if I'm wrong).

Cab0oze
04-20-2011, 05:51 AM
When i had my car in for rust work, they replaced everything (doors, a lot of metal around the wheel wells, trunk.... but they gave me some BS story about how the something channels (b pillar cover things) are NOT covered. In the end, it cost 40$ to replace all 4 (just had to pay for parts, not labor) so considering they did about $2000 worth of work, 40 wasn't a big deal and i paid without any complaints. I duno if they were lying to me, but either way, not the end of the world.

Every 04-06 mazda I have seen has rust there, and i'm sure the others will start soon.

Dave_The_BMXER
04-20-2011, 07:53 AM
My rears were replaced, front is rusting now. Might get it fixed this year when my car goes back for my sideskirt issue if they will do it.

little_wheelz
04-20-2011, 07:35 PM
Both sides of mine were replaced last year, they replaced the entire shell under warranty. I was told there is a 7yr warranty when I bought my 05 and I got it done last year which was 5 yrs and 3 months since I bought the car.

sol_searchin
04-20-2011, 08:39 PM
worse comes to worse I'm going to grind the bitch down and weld in some metal, I honestly don't feel like repainting a door and swapping all the internals when I can repair it, this shit is such a piss off.

Jeff-TheBiz
04-21-2011, 10:50 AM
I had the same issue on my wife's Mazda5... the part is replacable, and fairly inexpensive, if you are out of warranty, you could always replace it your self.

rzapata
04-21-2011, 11:06 AM
I have some bubbles building up on my car a well.. Seems like mine has been bombarded with all the bad luck in the world.. Do you know how much that would cost to get replaced??

Cab0oze
04-21-2011, 02:53 PM
I have some bubbles building up on my car a well.. Seems like mine has been bombarded with all the bad luck in the world.. Do you know how much that would cost to get replaced??
Like i just said, 42$ for me in QC, for all of them brand new.

And no, you haven't been bombarded with bad luck, every single mazda3 has this problem, rustproofed or not, babied or not. IMO its not really worth it unless you your car is spotless besides that, its $42 better spent elsewhere in the scheme of things, because the new ones will eventually rust too :P

sol_searchin
04-21-2011, 03:25 PM
Are you guys positive your talking about the right part of the door because it doesnt look replaceable

http://www.sunvigor.com.hk/images/Brands/Autoexe/Mazda6_GG_GY/AutoExe_Mazda6_MGG0300_B.jpg

I'm talking about these black pillars

rzapata
04-21-2011, 03:30 PM
Are you guys positive your talking about the right part of the door because it doesnt look replaceable

http://www.sunvigor.com.hk/images/Brands/Autoexe/Mazda6_GG_GY/AutoExe_Mazda6_MGG0300_B.jpg

I'm talking about these black pillars

Yeah, that's the one I was referring to as well.. What I meant by being "bombarded by all the bad luck" is that I've also got rust building up in the rear fenders. And as Cab0oze said, $42 is a pretty good price to get rid of all that rusted pillars.... Saves you the headache of thinking about it every single day (at least that's what's happening to me)....

poke65
04-21-2011, 03:30 PM
There were talking about the window channels I believe (small ones between the 2 back windows)

EDIT: (I guess i stand corrected but when mine was done those pillars are welded and whole door shell needed replacing so i still dont see how those are $40 )

sol_searchin
04-21-2011, 03:35 PM
Ya i think there talking about the rear window channel one

Flagrum_3
04-21-2011, 04:51 PM
Are you guys positive your talking about the right part of the door because it doesnt look replaceable

http://www.sunvigor.com.hk/images/Brands/Autoexe/Mazda6_GG_GY/AutoExe_Mazda6_MGG0300_B.jpg

I'm talking about these black pillars

(B-Pillars)-Dems the culprits, it's unbelievable how many 3s I've seen with rust on those pillars.It makes you wonder WTF...weird spot for rust to start prematurely! No sign on mine as of yet (knocks on wood).

_3

speedsilver
04-22-2011, 02:43 PM
I have a spot of rust here on my as well, i have a bunch of spots i need to fix (b pillar, a few paint chips, b pillars, between rear fender and bumper, as well as under on of the tail lights, gonna be a fun summer...

RTEnthusiast
04-22-2011, 08:03 PM
I have some on the B-pillar... it's going in for rust repair on May 23.

Takumi616
04-22-2011, 08:20 PM
had this repair done at Agincourt over the week. I'm happy with the results.

Cab0oze
04-22-2011, 08:31 PM
There were talking about the window channels I believe (small ones between the 2 back windows)

EDIT: (I guess i stand corrected but when mine was done those pillars are welded and whole door shell needed replacing so i still dont see how those are $40 )Its possible I got scammed, i dont trust em stealerships. This is coming from the dealer that replaced my doors, but kept my 2.3 badges because 'after they are removed the adhesive is not sticky and they cannot be put back on'. I had to fight with people for 3 hours before they finally agreed to put them back on. When they did, they came out with a armful of used ones to ask me which ones were mine. I was like wtf why do you have over 30 of these...

bman13
04-22-2011, 09:25 PM
I got a chip there which led it to rust and was told "wear and tear"...no bubbling :(. Maybe i'll just CF vinyl em all.

speedsilver
04-24-2011, 09:21 PM
Can someone clarify the rust warranty from mazda plz?

Burner
04-24-2011, 11:38 PM
Can someone clarify the rust warranty from mazda plz?

For the 3's it's 5 years with unlimited km's. The 04 and 05 3's have been officially extended to 6 years. I don't know if the 6's are different though.

I had the B-pillars on both of my rear doors replaced recently under warranty. They actually cut them off and welded in new ones.

speedsilver
04-24-2011, 11:56 PM
cool thanks, i need to pop by the dealership for a minute tomorrow anyway ill ask them

ParsM3GT
04-25-2011, 09:21 AM
Will be swinging by MoB today for an update on when I can get my car in for a fix. Same problems here. B-pillar and rear wheel wells. My wheel wells were done at the end of last summer and they started rusting again.

poundCake!
05-03-2011, 11:02 AM
Will be swinging by MoB today for an update on when I can get my car in for a fix. Same problems here. B-pillar and rear wheel wells. My wheel wells were done at the end of last summer and they started rusting again.

Hey just wondering if you can update the status of your car.

My '06 has pillar rust and I also just had my wheel wells done last August and the rust is back more then ever. I hope to bring it mine in next week.

ParsM3GT
05-05-2011, 05:26 PM
They were suppose to call me this week but they haven`t called yet.

Gonna take some pics to post up here.

Pillar
http://i16.photobucket.com/albums/b42/wolverine29/Mazda%203%20parts/DSC00224.jpg

http://i16.photobucket.com/albums/b42/wolverine29/Mazda%203%20parts/DSC00226.jpg

http://i16.photobucket.com/albums/b42/wolverine29/Mazda%203%20parts/DSC00227.jpg

sol_searchin
05-05-2011, 10:22 PM
I'm just fixing it myself, I looked through the paper work and the dealer repaired the panel 2x already and its rusting again. Doing it yourself and properly is the best way!

poundCake!
05-12-2011, 08:21 AM
[QUOTE=ParsM3GT;769291]They were suppose to call me this week but they haven`t called yet.

Gonna take some pics to post up here.

Pillar


Thanks for posting the pics. My wheel wells are quite similar. Very discouraging when you consider the dealer worked on it less than a year ago.

ferrarifan
05-13-2011, 10:23 AM
My 05 is riddled with rust. Most of the 3s now have it I'm noticing. My B pillars are shot, rear wheel wells, and now I noticed it all around my rear center brake light. Looks like crap. Thankfully the car is red so it doesn't show too badly. I'm gonna take it in to the dealership this weekend to see if they'll cover it under warranty. Next month will be 6 years since the car was bought so it's now or never.

Too bad it's rusting out cause other than that, it runs as good as new with 215000 km on it.

xdutrax
05-15-2011, 01:19 AM
cool thanks, i need to pop by the dealership for a minute tomorrow anyway ill ask them

If you're going to Whitby Mazda, they were the least bit helpful when I talked to them about rust on my B pillars last year.

Default User
03-21-2012, 12:54 PM
Back from the dead

Does anyone have a how to on getting this out?
Going to attempt a DIY fix, but not sure how to get under / behind this pillar

Manpreet
03-21-2012, 01:57 PM
Back from the dead

Does anyone have a how to on getting this out?
Going to attempt a DIY fix, but not sure how to get under / behind this pillar

i think a small die grinder and little bit of bondo, or fiber glass and some sand paper, and black spray bomb can, im in the same position as well and my rust is pretty bad going to attempt it this in couple of days

Default User
03-21-2012, 02:01 PM
i think a small die grinder and little bit of bondo, or fiber glass and some sand paper, and black spray bomb can, im in the same position as well and my rust is pretty bad going to attempt it this in couple of days

I got that much. Just not sure if the part itself is removable to get to the rust gremlins

Manpreet
03-21-2012, 02:05 PM
I got that much. Just not sure if the part itself is removable to get to the rust gremlins

i dont think it is, cuz i remember doing at bmw at work and the b pillar where it was rusting was attatched to the door skin just tacked/spot welded in

silverstarmazda
03-21-2012, 02:08 PM
my b-pillars are rusted so bad... its pretty much went through the door. theres no hole yet but its bubbleing rly bad.... the extended warranty ended right before i got the car....damns...

Dave_The_BMXER
03-21-2012, 02:29 PM
Ya I can see mine in the door too. Sanding, bondo, glass all that jazz will just look bad on inside.

syasar
08-24-2017, 08:20 PM
Not sure if anyone is gonna very read this, thought I bring something to the conversation. So I trying to work out this issue myself, I thought I discuss what I have discovred thus far. So when started to sand the one of pillars thinking the rust was one the surface my god was I wrong no one every do this if you arent ready to take on the job of cleaning all the rust and getting rid of the rust, I wasn't ready I have not so great job on the area I plan to fix it sometime later when I have the time, the rust is only comestic anyways.

So back to the matter at hand, the area which so on the outside the black trim that bubbles gives us all a headache is the Door Applique, this what sol_searchin was asking about and this was what bubbles on the outside, this is just vinyl and the rust comes for insider the door. This can be replaced and purchased oe, part number is BP4K508V3B i think that the same for all of this this would be a finshing touch after the door rust us repaired.

This reason why I think this area rust is because of bad weatherstripping bewteen the two door, the weatherstripping on the rear or is not very effective is peels really easy, it is supposed to seal the gap bewteen the two door, plus its just not a strong seal, there is a gap under the seal when rust starts and it rot out the inside of thin sheet of metal on the door frame for atleast the rear door and the front door is literally exposed to the enviorment. But at he same it seals in mositure and that time to dry and that just a bad combination. Really if you see it on the outside on the black applique, its already to late the metal in that part of the door frame is already rusted out, take it for someone who had a panic attack when rust was crumbling in my hands.

I guess the only way to fix it is to slow it down maybe improve the weather trim by either replacing the rear door weatherstripping or putting some universal edge weatherstripping on the door, but you run the risk of creating an area of moisture. The best solution is to have the rust piece cut out and have it welded with new metal, that is expensive probaly best to never try to work on it, I learned that the hard way.

Since my car a 2006 with 190km I am not gonna pay to get it fixed, just bought it as my first car, pretty good condition and no major rust aside form the door trim and alittle around the door well. In the short term I rust sprayed rust convertor and rust paint on top all the areas with rust and I will regually spray rust inhibitor in that area and keep water and air out the best I can. What my long term plan is, if I ever get to it is to sand down as much rust as I can on bought sides and paint the area with POR15 rust paint, that should seal and stope the rust really good, then I bondo on top, paint and clear it and buy the applique it out it on top of the outside, then change out all the weather stripping with factory oem. That should fix it for a few years and my poor atempt with the front driver door, where I used some canadain tire rust covertor, bondo and paint and clearcoat, lets see how long that lasts. The rust damage is pretty serve and hopefully its doesnt ruin the door or mess up the windows in anyway.

So that what I have discovered, I will post log if I every try to do the long term plan, hope the rust inhibitor is enough to slow the rust down. I plan to drive the car down till it dies atleast 3-4 year out of it would be more then enough, doesnt mean it can't look good, paid 2000, but that bit of rust still kinda sucks.

*sorry for the long read on a old post, not many people talk about this issue so I thought I leave something for people in my shoes, I have seen it on just about every gen1 mazda3 with more than 100k, so i assume its common, especially with the weird weather here in the GT.

Jackal
08-25-2017, 12:53 PM
syasar
Sounds like an interesting project. Pics please!


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