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W215coupe/W220 windscreen washers

Discussion in 'Bodywork, Tyres, Wheels & Trim' started by Flyinspanner, Mar 15, 2019.

  1. Flyinspanner

    Flyinspanner Senior Member

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    Your Mercedes:
    CL500 -W215, A140-W168
    Hi

    I’ve got blocked jets, and have tried in vain to poke them clear with the serrated tools for the job.
    What I want to do next is remove nozzle heads and dunk them in a cleaning agent to see if that (or being able to poke front n back!) may help.

    I’ll also get to check pipework ‘flow’.

    Does anyone know if there is a knack to getting them off the bonnet? (Push fit? Clips? - don’t want to wreck them as they are around £70!!!) :(

    Are there any non return valves on the pipework which may need a check?

    .....and I think I’ll wait for this wind to die down before opening the bonnet :shock:
     
  2. Craiglxviii

    Craiglxviii Senior Member

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    Your Mercedes:
    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    There should be a non return valve below each washer cluster, and they should be a clip fit into the bonnet.

    I have one blocked jet, it’s the far left one and the remaining 5 still put enough water on the screen to clear it fine.
     
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  3. OP
    Flyinspanner

    Flyinspanner Senior Member

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    Your Mercedes:
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  4. OP
    Flyinspanner

    Flyinspanner Senior Member

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    Your Mercedes:
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    Well I’ve stripped out all all the nozzles and had them in Killrock descaler for an hour - loads of muck appeared to fall off. I’ve poked and prodded wires through...
    Retried and I’ve now got 2 out of six nozzles working!

    Back into descaler for a few hours, and see if I can inprove some more!

    - anyone got any spares?
    - are the same ones used on other models? Heated/2 nozzles per unit?
     
  5. Craiglxviii

    Craiglxviii Senior Member

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    Your Mercedes:
    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    220/215/230 all shared the same nozzles. Not sure about any others.
     
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  6. OP
    Flyinspanner

    Flyinspanner Senior Member

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    Got 5/6 spraying now,
    I’ve dropped the tardy one back in the solution.
    Hopefully it’ll de clog overnight....


    Plus I’ve just bought an ultrasonic cleaner on the ‘bay, should be able to blast them again if needed, plus the trail bike I’m going to rebuild in the spring/summer will get the carb cleaned properly. :)
     
  7. Craiglxviii

    Craiglxviii Senior Member

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    Your Mercedes:
    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    I was going to suggest an U/S cleaner, but didn’t want to tempt you to parting with more readies...
     
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  8. OP
    Flyinspanner

    Flyinspanner Senior Member

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    Would you have to keep the elec connector out of the “bath” of an ultrasonic? (Or can you just dry it off after - considering their use/position?
     
  9. Craiglxviii

    Craiglxviii Senior Member

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    Your Mercedes:
    W215 CL500 Motorway Queen; W251 R320L Familybenz, S211 E320 Avg Designo Edition now sadly missed.
    I would very much keep it out. Once water wicks into a harness, that’s it...
     
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