Streaking Badly, I did use search function :)
 

Hi, I'm having a really really bad wiper streaking issue. I searched around for solutions and found many interesting things on the W212 forum though. I tried claybar-ing the windshield, using rain-x wipe, change into a brand new OEM dealer wiper.

The washer fluid I use is the one from the dealership. The problem usually worsen after a 10-20+ wipes in a rainy day (after blades becomes really wet??? :nix:)

It did get slightly better after I changed the wiper, but the problem came back again within 1 month of usage. I asked the dealer and they told me it could be oil or tree sap and they buff it real hard, still pretty useless :nix:

I'm thinking to just use goo gone or vinegar or some alcohol on the windshield. What should I use to clean the rubbers on the blade? That's one thing I have no idea. I attached a few videos to show how bad it is. I'm at a huge disadvantage for driving at night. The wiper streaks just made it worse. This is a huge safety issue for me :bow:

Thank you guys :y I tried to use search before this but haven't really find any good solution that works for me :bow:

Here's the pictures. I tried to upload the video but I was unable to :( I'll try to post it on youtube first/

https://www.youtube.com/watch?v=0W8o...ature=youtu.be
https://www.youtube.com/watch?v=w62K...ature=youtu.be
https://www.youtube.com/watch?v=biMl...ature=youtu.be
https://www.youtube.com/watch?v=7p1p...ature=youtu.be
https://www.youtube.com/watch?v=GDog...ature=youtu.be

Claybar and wax the windshield. Buy quality wipers if you are not using them already.

I tried claybar and wax it. I used mcguire's claybar + mcguire's quick detailer with almost no result honestly. I was pressing against it pretty hard. I did one time wax the whole car 3/4 weeks ago with no result as well. :nix:

Oh yeah, I just changed my wiper into OEM from Benz dealer 2 months ago. It got better for the first few weeks, then it's the worsen again :(

Do you guys think the windshield itself is moldy? I remember when I was cleaning off the chromes on my previous car with gasoline. Will it be okay if I use gasoline on my windshield??? The only thing that kinda makes sense is goo gone, that's the only thing I haven't try honestly.

Quick detailer isnt a wax

Do you use car washes regularly? They leave a film from the drying agent/wax that causes streaking. Really hard to remove from windshield.

xXHotelCrazyXx I did claybar first (McGuires), then wax on the next day (Ice Turtle Wax). No effect at all :(

startman1954 No, I don't use car washes. I usually wash it by hands every 2 weeks.

The OE dealer wipers steak a lot. I used to love Bosch wipers, but nowadays most other brands are just as good if not better. I switched to michelins, ran some isopropyl alcohol on my windshield, and now it stays clear as it should.

Hi,
I found McGuires scratch x by experimenting over the years is the best hands down window glass cleaner/ploish I know it sounds strange but please trust me and give it a go.

It coats the glass with something which eliminates the film of water causing the streaks also a lot of the water beads up and blows off with the wind when driving.

I also use it on the inside to stop fogging streaks and smears works exactly as I have described it.
Dave.

Cfmistry, thanks for the advice! Although a friend of mine switched to a non oem or bosch brand like micheline or rain-x brand and it did not properly fit his w212 (not w204). I will try to use isopropyl alcohol first then maybe something harsher if it still doesn't work. Thanks a lot!

NZ-Merc, wow, never have thought of it honestly. A scratch removal chemical can be used to windshield and put a water beading coat on it too? I will definitely try it after using the isopropyl alcohol!

please let us know how it works out for you I have the same problem from the day one.

None of these work guys :( I'm gonna call the MBSeattle since I got the car CPO from there just months ago and it had this issue since week 1 / week 2 when it starts to rain pretty hard.

Its interesting that it streaks a lot more on the back stroke. Wondering if its possible that the wiper arm is slightly bent causing it not to have the correct angle in one direction?

I use Griot's glass polish than I put a coat of Jet 109 from Chemical Guys it takes off the film that builds on the windshield.

http://www.griotsgarage.com/product/...Picks&refType=

http://www.chemicalguys.com/JetSeal_...wac_118_16.htm

TheRulesLawyer interesting idea, but how do I know if it's been bent? :eek:

nelson_g Cool, I like the jetseal, but since I got an appointment with MBSeattle this Friday, I'll let them take a look at it again throughly this time. I'm hoping that they wouldn't charge me anything or least a very very reasonable amount as I got this car as a CPO and hoping no issues will happen to the car that I need to pay it out of my pocket :)

So far I got free (Spot) re-paint on the front and rear bumper since the clear coat is not throughly applied on both bumpers. (Free of Charge :naughty:)

Wiper blades were changed just 1 month after the purchase of a CPO car :crazy: ($70ish)

Service B (18k-20k Miles) that's coming in 1 or 2 months :eek:

Thank you guys for being patient and staying here to help me. Much appreciate it!