230TE rear wash not working

[Brian23]

Hi, I have eventually tried to find out why my rear wash does not work. when you press the button the wiper goes but the wash will not. i connected the motor to the battery and it works ok. When I put a cuicuit tester (light type) it glows on and off in rythum with the wiper. Any ideas
Brian

 

[Mercedes 190E]

Mine is exactly the same Brian. The rear washer is powered from the rear motor (Which has always seemed a little bizarre to me!) My fault, which is probably the same as yours is a break somewhere in the power wire from tailgate to switch. Difficult to diagnose without replacing the wire, which would be quite a lot of work.
One thing I had considered (But I'm not sure if it would work) would be to replace that wire to the switch with a live from the fusebox. I suspect that then the wash and wipe wouldnt work at the same time.
I suppose that a separate switch to split the functions would solve that problem though.

 

[The Crooner]

Hi

I've just mended the leak in the pipework of mine from the pump to the screen. There is a joint in the headlining on the drivers side of the car in the rear hard plastic bit. I part had come adrift so jubilee clipped them both to the connection piece.

I've also relocated the reservoir and pump to inside the spare wheel.

I'm going to connect it all up tomorrow, so I'll report back.

Also removed the electric aerial as the metal behind it is quite rusty. Replaced it with a small sharks fin on the top of the tailgate - looks the dogs, will put some pictures up soon.

Have now got a great big cavern behind the trim where the leccy aerial was to fill with a subwoofer - more to come.

Had the sunroof open quite a lot recently too, quite a bit of wind noise

 

[Mercedes 190E]

Hi

I've just mended the leak in the pipework of mine from the pump to the screen. There is a joint in the headlining on the drivers side of the car in the rear hard plastic bit. I part had come adrift so jubilee clipped them both to the connection piece.

I've also relocated the reservoir and pump to inside the spare wheel.

I'm going to connect it all up tomorrow, so I'll report back.

Also removed the electric aerial as the metal behind it is quite rusty. Replaced it with a small sharks fin on the top of the tailgate - looks the dogs, will put some pictures up soon.

Have now got a great big cavern behind the trim where the leccy aerial was to fill with a subwoofer - more to come.

Had the sunroof open quite a lot recently too, quite a bit of wind noise

Then buy my Passat wind deflector (See For Sale) -bargain! (Can't use it myself as my cable has broken....)

 

[The Crooner]

Then buy my Passat wind deflector (See For Sale) -bargain! (Can't use it myself as my cable has broken....)

I was waiting for that!

PM me your paypal address and the price and I'll have it off you.

Tony

 

[Mercedes 190E]

PM on way Tony !

 

[television]

Hi, I have eventually tried to find out why my rear wash does not work. when you press the button the wiper goes but the wash will not. i connected the motor to the battery and it works ok. When I put a cuicuit tester (light type) it glows on and off in rythum with the wiper. Any ideas
Brian

Yes as said the washer is powered from the wiper, this is so that water is not wasted when the wiper is not on, most faults are a broken wire around the hinge area

 

[Brian23]

Thank you

thank you for the replies I will check the wiring
Brian

 

[The Crooner]

Have good news....and bad.

The pump works fine in its new location, and pumps water...which drips through the headliner.

I clearly have more issues than the break I thought I had fixed.

The pump cycles on one stroke of the wiper, i.e. there, but not back.

Tony

 

[television]

Must be a hole in the pipe or a T piece loose

 

[Brian23]

A bit of confusion

I think that there is a bit of confusion to the symptoms. When the wash wiper button is pushed and held in, and a neon type circuit tester is applied to the power line for the washer motor, the light goes on and off as the wiper goes across the screen and back. The button is not released, so I would expect the power to be continuous so that the water is continuous.
Brian

 

[The Crooner]

Must be a hole in the pipe or a T piece loose

You were, of course, right.

I wish you hadn't been, getting a new length of pipe through the grommet was a PITA.

[/IMG]

Hopefully ypou can see the three water trails left by the output of the trifurcated jets.

Tony

 

[The Crooner]

I think that there is a bit of confusion to the symptoms. When the wash wiper button is pushed and held in, and a neon type circuit tester is applied to the power line for the washer motor, the light goes on and off as the wiper goes across the screen and back. The button is not released, so I would expect the power to be continuous so that the water is continuous.
Brian

No, what you are seeing is correct, you hold the button in, but power is only applied to the pump on one stroke of the wiper moving, so theres an on/off cycle for each complete sweep of the screen.

Is the pump making a pump like noise when the switch is depressed?

If not the pump is probably stuffed.

Tony