When I press the button to activate the rear wiper washer, the washer sprays a fan of water that is followed by the wiper. (I think I've got this right.) However, the fan of water "starts" at the middle section of the glass and sprays down onto the paint--as the wiper appears to move in conjunction as the washer. It seems to me that either the washer needs some sort of adjustment so that the fan of water "starts" at the point of the wiper's resting position so that it can move across the window (and not down onto the paint); OR... I think I see two holes for the washer fluid to come out of--maybe the other is not working? I'm not sure about the latter, as the spray moves in such a way that would cover all of the glass.

Does anyone have any experience with this? Thanks, guys!!!

The rear washer nozzle was a problem on the 98-99 ML's. WE replace lots of them. Cheap plastic! MB number 163-860-04-47 ($11 list)

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

MB Doc,

How tough is it to replace? When I bought my ML if you hit the button water pured out of the bottom of the rear hatch. I pulled the interior panel and found the hose hanging loose. The plastic piece that goes through the wiper motor had broken off. I thought it was part of the wiper motor and since the motor worked fine I just plugged the hose so washer fluid would not come out if I accidently hit the button. If it can be fixed for not much I will consider it because that is the only thing on the truck that does not work on truck.

Thanks,

That plastic tube IS part of the nozzle part number!

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

M.B.DOC, Thanks! Am I replacing the whole wiper arm? Or the part that is under the "cap"--held on by a nut? Also, can you explain how the washer is suppose to work. I notice there are two holes, but part of the "cap" covers the top hole. Any advice? Thanks again!