R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

2011 R 350 Headlight Washer

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Old 12-17-2017, 08:22 AM
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R350 Bluetec
2011 R 350 Headlight Washer

Good Day all.
I seem to be having a problem with my headlight washer.
Different places tell me that i have to use the washer 5 times then it will automatically turn on the headlight washer.
I am having no success, also cant see to find is there is a fuse for that part.
Also anybody know how to access to remove the washer reservoir


Any help would be appreciated.Thanks
Old 12-17-2017, 05:40 PM
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R350 Bluetec 4matic 2011 and..........hyundai elantra 2016........
it's ten times....should work, you actually dont have to push it long enought for the liquid to spray on your windshield, but ten short pushes will do : headlights HAVE to be on, and the count resets after lights turn off or engine turns off..
Old 12-18-2017, 07:03 AM
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R350 Bluetec
HI, thanks fellow mtler, but nada.
Also i have a leak on the tank so i dint fill it all the way up. Im going to bring it to my mechanic and test the pump
Old 12-18-2017, 07:09 AM
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1998 ml320 with lift, dirt tires and rust !!!
On mine, the connection between the pump and the hose that goes all the way up to the windshield nozles was broken. Not an easy acces, fix was in other hand easy, gorilla glue and here you go.

But i do have no knoledge if there is a one pump and then solenoide to bypass liquid to headlight spayers or a second pump for headlights....

Good luck
Old 12-18-2017, 07:51 PM
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2005 C240 2011 R350
separate system.. this may help
Attached Files
File Type: pdf
HeadlampCleaningSystemDiagram.pdf (229.4 KB, 170 views)
File Type: pdf
HeadlampCleaningSystemNozzle.pdf (243.9 KB, 136 views)
File Type: pdf
HeadlampCleaningSystemPump.pdf (327.3 KB, 145 views)

Last edited by efzauner; 12-18-2017 at 07:54 PM.

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