C300Sport

I want to adjust my washer nozzles but am not quite sure how the system works. There seems to be a flat head "set" or "adjusting" screw beside the nozzle but I am not sure what it is for, so I thought I would ask before screwing something up…pardon the pun.
Is this for loosening/tightening the nozzle, allowing for manual adjustment, or does it move the nozzle as you turn it? I started turning the driver's side screw but couldn't tell what effect it was having.

C300Sport

I'm surprised no one weighed in on this one.
Anyhow, our nozzles are not the standard little pin holes that can be adjusted with most any pointed object. The are more like little slits and mine seemed to migrated down to the point where they are hitting partially below the lowest point of the wiper blades.
Anyhow, I turned what appeared to be an adjustment screw counterclockwise and the seemed to aim up just a little more. It was very subtle but hopefully it will have done the trick next time I try it out....of course it may be shooting over the car but at least I will know what to do to home it on proper adjustment.

merc300

same here. shoots low like crap. you would think this basic functionality would not need tickering.... but then again its only a machine of plastic, metal and ruber.

stosoorok

Mine also too low and takes about 1-2 seconds before it shoots. I think passenger side nozzle leaking air into the hose or something. New set of nozzles and hose about €100.

stosoorok

Found WIS document "Remove/install windshield washer hose" for nozzle adjustment screw and SST.

C300Sport

Well crap...it couldn't be easy now could it... I wonder what is so wrong with a "pinhole and needle" system that made MB want to do this??

Thanks for the info stosoorok, looks like I will have another project this weekend.

stosoorok

The answer is quite simple. Now you have to go to workshop and pay for the job.

No problem. It's on my diy list also.


edit: I got hands on to that original adjustmet tool. It's very easy to adjust with it. Couple of minutes and all done!

GottliebDaimler

Stosoorok

Once you get the tool do you adjust it by screwing in or out or do you just pry up or down?

stosoorok

You just pry and test. Before you test it close windows and doors. Even better if you'll ask someone to help you.

Samaral

Where to find this tool to buy?? Dealership??

Thanks.

stosoorok

I've seen it on ebay.de and why not to ask dealer. Maybe they even adjust it for free and you don't need to buy it.

Samaral

I tried to ask the dealership to fix. Came back the same.

GottliebDaimler

I took mine to the dealer to get them adjusted and the dealer told me that MB changed the design on the C class in 2009 to non-adjustable nozzles. I wonder if we could buy 2008 nozzles and swap them out.

MarkS8

I stick a screwdriver in the top slot of all 3 washers and tried to move them, without success. I tried the washers and they had stopped working and so had the wipers. After checking the fuses and searching for a solution on the internet I figured it was going to be a trip to the dealer but next morning everything was working again. Any ideas?

MarkS8

I found out why my washers and wipers suddenly stopped working...the bonnet was not closed properly. It looked closed but the warning display came on when I drove the car.

PolarWhite2014

Here's a tool for 48 bucks. https://mercedespartscenter.com/part...&siteid=215720


I'll ask the dealer to adjust mine when I'm in for service. If they won't do it for me then I'll add it to the cons list on buying a Mercedes again. If they will, I'll add it to the pros list. It doesn't rain often here but mix some light rain with desert dust kicked up by the wind and you get one cruddy windshield.

twowheelin

I used 2 small flat-blade screwdrivers, one in the bottom and one in the top slot. Tweaked up just slightly and then tested for mid-windshield hit. Pretty easy overall, just need to be very delicate with movements.

Yugguy

I might try that. Mb dealer wanted 42 quid for an adjustment tool