Wipers when you wash the screen

SCP440 · 25th January 2018, 07:08

Are the wipers supposed to work automatically when you wash the screen?

If so what triggers this? Is it the sensor for the automatic wipers get some water on it or is there a relay that comes into action when the washer pump is activated?

The reason I ask I have noticed that the wipers don't always go when I wash the screen and sometimes I have to repeatedly press the wash button for the wipers to go. Do I need to just reposition a washer jet to get some water on the sensor or do I have a faulty relay?

Everything else works as it should and the wipers work automatically when ever the screen gets wet normally.

SD1too · 25th January 2018, 07:15

The first thing to check Steve is that you are pressing the washer button for a good few seconds. I have found that a quick burst isn’t always sufficient to trigger the programmed wipe.

Simon

marinabrian · 25th January 2018, 07:25

It's controlled by the BCU, and programmed wash wipe is a T4 option.

If it is set to no programmed wash wipe, then pulling the stalk operates the washers without operating the wipers, if set this way, you don't get the wipers dragging over a dry screen, so it does have it's advantages

Brian

macafee2 · 25th January 2018, 08:06

I was also told that it did not automatically wipe each time it was washed but about 1 in 4.

macafee2

steve-45 · 25th January 2018, 08:12

Quote:

Originally Posted by macafee2

I was also told that it did not automatically wipe each time it was washed but about 1 in 4.

macafee2

Not sure about that, but I seem to recall that if you have headlamp washers they trigger about every 4th wash of the screen.

T-Cut · 25th January 2018, 09:18

I've never experienced any need for a long or a short pull of the stalk. The wipers always start almost immediately. But having an option to spray the screen without the wipers operating seems a bit futile, if not potentially dangerous.

TC

Fox3 · 25th January 2018, 09:32

Mine seems to need a pull of a couple of seconds to operate the wipers, I quite like it. Often at this time of year the washers are frozen solid, this saves smearing the salt and dirt across the screen unnecessarily

macafee2 · 25th January 2018, 09:48

Quote:

Originally Posted by steve-45

Not sure about that, but I seem to recall that if you have headlamp washers they trigger about every 4th wash of the screen.

yea got those. never see the point of wash without wipe
maybe I was getting mixed up, thanks

macafee2

COLVERT · 25th January 2018, 09:55

Quote:

Originally Posted by T-Cut

I've never experienced any need for a long or a short pull of the stalk. The wipers always start almost immediately. But having an option to spray the screen without the wipers operating seems a bit futile, if not potentially dangerous.

TC

However supplying power to frozen down wipers might not make the wiper motor too happy.---

olliesgrandad · 25th January 2018, 12:17

Quote:

Originally Posted by steve-45

Not sure about that, but I seem to recall that if you have headlamp washers they trigger about every 4th wash of the screen.

Mine is every 5 wipe if head lights are on

25th January 2018, 07:08	#1
SCP440 I really should get out more....... MG ZT-T 260 Join Date: Feb 2016 Location: Witney Posts: 2,504 Thanks: 6 Thanked 910 Times in 571 Posts	Wipers when you wash the screen Are the wipers supposed to work automatically when you wash the screen? If so what triggers this? Is it the sensor for the automatic wipers get some water on it or is there a relay that comes into action when the washer pump is activated? The reason I ask I have noticed that the wipers don't always go when I wash the screen and sometimes I have to repeatedly press the wash button for the wipers to go. Do I need to just reposition a washer jet to get some water on the sensor or do I have a faulty relay? Everything else works as it should and the wipers work automatically when ever the screen gets wet normally.

25th January 2018, 07:15	#2
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,375 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	The first thing to check Steve is that you are pressing the washer button for a good few seconds. I have found that a quick burst isn’t always sufficient to trigger the programmed wipe. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

25th January 2018, 09:32	#7
Fox3 Avid contributor MG ZT CDTi and MG ZT 190 Join Date: Oct 2016 Location: North Yorkshire Posts: 188 Thanks: 53 Thanked 45 Times in 30 Posts	Mine seems to need a pull of a couple of seconds to operate the wipers, I quite like it. Often at this time of year the washers are frozen solid, this saves smearing the salt and dirt across the screen unnecessarily __________________ 2003 ZT+ CDTI

25th January 2018, 07:25	#3
marinabrian MG ZT Join Date: Jan 2011 Location: Newcastle Upon Tyne Posts: 20,151 Thanks: 3,565 Thanked 10,837 Times in 5,718 Posts	It's controlled by the BCU, and programmed wash wipe is a T4 option. If it is set to no programmed wash wipe, then pulling the stalk operates the washers without operating the wipers, if set this way, you don't get the wipers dragging over a dry screen, so it does have it's advantages Brian

25th January 2018, 08:06	#4
macafee2 This is my second home Rover 75 Saloon & Tourer Join Date: Sep 2012 Location: Lincoln Posts: 14,928 Thanks: 1,630 Thanked 3,032 Times in 2,181 Posts	I was also told that it did not automatically wipe each time it was washed but about 1 in 4. macafee2

25th January 2018, 09:18	#6
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	I've never experienced any need for a long or a short pull of the stalk. The wipers always start almost immediately. But having an option to spray the screen without the wipers operating seems a bit futile, if not potentially dangerous. TC