Rover 75 - One touch Electric windows - MG-Rover.org Forums

surreyranger · 14-11-2006, 00:23

ZTT 180+ 2002 ('52 plate)
All the windows "one-touch" down, but only the driver's side "one-touches" up. I presume this is normal.
How hard is it to get them to all do the same?

Thanks in advance.
Apologies if this has been covered elsewhere - but I couldn't find it.

jeenie123 · 14-11-2006, 07:32

Quote:

Originally Posted by surreyranger

ZTT 180+ 2002 ('52 plate)
All the windows "one-touch" down, but only the driver's side "one-touches" up. I presume this is normal.
How hard is it to get them to all do the same?

Thanks in advance.
Apologies if this has been covered elsewhere - but I couldn't find it.

My 2002 ZT 190 only has this function on the driver's window, none of the others. I'm interested to know if that's normal.

nigel207 · 14-11-2006, 08:38

Yes, that is normal. I had two 800's on which all windows were one touch down and up, but the two 75's I've had (a 1999 and a 2004) have only had the one touch up on the driver's door. Progress I think they call it!

Ian · 14-11-2006, 09:08

Yes it is perfectly normal only to have the one touch up function on the drivers window - I guess that is just how it was designed. Sadly, I don't know of anyway of making all the windows one touch up

Moonstone · 14-11-2006, 17:52

Wouldn't the anti-trap mechanism have to be fitted to any window with one-shot up?

Sejin26 · 14-11-2006, 18:34

It would MoonStone. But since there is no easy way of doing it there is no point.

surreyranger · 14-11-2006, 21:05

No easy way of fitting the anit-trap mechanism or the "one-touch up"?

MeAndMyself · 14-11-2006, 21:27

I believe it would be very much inpossible to retro fit a one-touch up system to the remaining three windows. You'd either have to re-program the BCU or bypass the BCU entirely and fabricate your own window control computer.

surreyranger · 14-11-2006, 22:16

Thanks.
Begs the question - why on earth didn't they put it in in the first place?
Safety? Cost cutting?

MeAndMyself · 14-11-2006, 22:22

I'd hazzard a guess and say neither. If the BCU has the logic to control one-touch operation in any direction then it wouldnt take a huge leap of imagination or cost to have all windows as one-touch up/down.

From my experience though, I'd say it has more to do with a luxury feature. If you think about it, your passengers (front or rear) have all the time in the world to raise/lower their repective windows. As the driver, you cannot afford to be distracted by having to keep your finger on the window switch hence the one-touch operation.

I know my previous car (2002 Astra SRI) had one-touch up/down on front windows but the rear were manual winders. As for our Honda Civic (P-reg) Only the drivers is one-touch down but not up with all others being regular electric windows. I guess its horses for courses.

Alex30013k · 15-11-2006, 05:05

The Ford mondeo has them up and down, but they don’t have the same anti trap system as the 75, All the windows in the mondeo have pressure sensors so if you put strain on the window it will stop, but this is a good thing but then the rubber that the window uses to seal its self has to be quite lose so it does not stop the window when it gets dirty/ sticky,

That is why in every mondeo you will go in had wind noise coming into the cabin on all windows.

Well that’s the case in the 6 mondeos I have been in!

So I would rather just have one the drivers up than have wind noise.

surreyranger · 15-11-2006, 17:42

I don't have any wind-noise from my drivers side so I can't see that being a problem on the other windows.

"MeAndMyself" - pretty much what I was getting at. I suspect too that it is a pure logic/programming thing. If a window has "one-touch" down then surely the mechanisms are all there for the reciprocal "one-touch" up as well.

Just wanted to see if anyone had any firm knowledge on this.

I had a Volvo S80 before and virtually everything was programmable from the software (Vadis system) as all electrics were/are multiplexed. (Length of time on for courtesy lights, headlamp operation, central locking operation following "plip" activation and so on)

Wonder if the MG systems have the same with regard to windows etc.

MeAndMyself · 15-11-2006, 23:01

As far as I know the MG Rover system is a bit more complex. I don't know of anyone being able to reprogram the cars computers. You can select different options for the car on Testbook (such as courtesy lights on/off or tell the car if the Hi-Line SatNav is fitted), but I'm afraid I don't recall window operation being a changeable variable.

Dizzy · 16-11-2006, 08:38

I wish this 'one touch' function was changeable. I almost never want to take my window right the way down but I often want just a 1/2" gap to let some air through so as to stop the windows getting steamed when I'm parked up eating my chips. By the time I've managed to stop the window whizzing up and down, the chips have got cold!

MeAndMyself · 16-11-2006, 09:40

The one touch function is operable by a single quick press of the button. If you keep your finger on the button and let go when the window has reached the desired hight, it should stay put.

Moonstone · 16-11-2006, 14:58

Quote:

Originally Posted by surreyranger

"MeAndMyself" - pretty much what I was getting at. I suspect too that it is a pure logic/programming thing. If a window has "one-touch" down then surely the mechanisms are all there for the reciprocal "one-touch" up as well.

Just wanted to see if anyone had any firm knowledge on this.

As Alex wrote, some cars have motors which are sensitive to pressure - these presumably stop when they meet resistance, including sticky seals. The Rover may have used an alternative method with wired sensors to detect a trapped object - that would need more electronics as well as software control. Just my guess.

Ian · 16-11-2006, 15:08

Of course the UK Passenger Side window could be made to work, as for LHD cars it would have one touch up and down. It is all a case of getting it to work

surreyranger · 16-11-2006, 23:34

Exactly, this is the sort of thing I'm on about. Most of the looms, I believe would be standard for LHD and RHD so maybe there is a couple of wires hanging about near the LH door that need connecting?
Or is that too far a simplified view of things? (probably is, as I suspect software has a big say)

Putting it simply, something detects a quick tap of the drivers side button and powers the motor to "full stop" without the button conns being "made".
Wheras normally, the button being pressed - therefore "making" the contacts, powers the motor until the contact is broken - releasing the button, which stops the window.
So, the normal operation seems to be a basic "make or break" circuit to a motor. What senses and controls the "one-touch" operation?

I'll have a butchers at my ZT CD when I get the chance to see if it makes any sense.

Edit: Had a look and all is clear now!

Pretty much alluded to in the posts above but....it is all to do with the anti-trap mechanism and the BCU (Body control unit).
The drivers side only, has the Anti-trap fitted (I didn't know that) and as such, when an obstruction is detected, the window powers down automatically. The manual states that this window ONLY, has the one-touch function also.
The whole system goes through the BCU (as MeAndMyself says above), so the BCU controls all inputs from the door buttons and the outputs to the respective windows.
Why one-touch only on drivers side? Safety, as this is the only one with an anti-trap mechanism.

So, seeing as the BCU must be programmed differently for LHD Anti-trap mechanisms, I would hazard a guess and say it must be programmable for at least both front windows, if not all - for "one-touch".
Question is, how?
Answer: with a factory programmer that is probably rotting in a warehouse somewhere en-route to China.
Oh for the days of the seventies where "re-programming" meant either a blob of solder somewhere or a jumper being moved on a circuit board!

14-11-2006, 00:23	#1
surreyranger Registered User Join Date: May 2005 Car: MG ZTT Posts: 41	Rover 75 - One touch Electric windows ZTT 180+ 2002 ('52 plate) All the windows "one-touch" down, but only the driver's side "one-touches" up. I presume this is normal. How hard is it to get them to all do the same? Thanks in advance. Apologies if this has been covered elsewhere - but I couldn't find it.

16-11-2006, 23:34	#18
surreyranger Registered User Join Date: May 2005 Car: MG ZTT Posts: 41	Exactly, this is the sort of thing I'm on about. Most of the looms, I believe would be standard for LHD and RHD so maybe there is a couple of wires hanging about near the LH door that need connecting? Or is that too far a simplified view of things? (probably is, as I suspect software has a big say) Putting it simply, something detects a quick tap of the drivers side button and powers the motor to "full stop" without the button conns being "made". Wheras normally, the button being pressed - therefore "making" the contacts, powers the motor until the contact is broken - releasing the button, which stops the window. So, the normal operation seems to be a basic "make or break" circuit to a motor. What senses and controls the "one-touch" operation? I'll have a butchers at my ZT CD when I get the chance to see if it makes any sense. Edit: Had a look and all is clear now! Pretty much alluded to in the posts above but....it is all to do with the anti-trap mechanism and the BCU (Body control unit). The drivers side only, has the Anti-trap fitted (I didn't know that) and as such, when an obstruction is detected, the window powers down automatically. The manual states that this window ONLY, has the one-touch function also. The whole system goes through the BCU (as MeAndMyself says above), so the BCU controls all inputs from the door buttons and the outputs to the respective windows. Why one-touch only on drivers side? Safety, as this is the only one with an anti-trap mechanism. So, seeing as the BCU must be programmed differently for LHD Anti-trap mechanisms, I would hazard a guess and say it must be programmable for at least both front windows, if not all - for "one-touch". Question is, how? Answer: with a factory programmer that is probably rotting in a warehouse somewhere en-route to China. Oh for the days of the seventies where "re-programming" meant either a blob of solder somewhere or a jumper being moved on a circuit board! Last edited by surreyranger; 16-11-2006 at 23:57.

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14-11-2006, 08:38	#3
nigel207 Registered User Join Date: May 2005 Location: Mansfield, Notts Car: 2004 Rover 75 Tourer CDTi Posts: 362	Yes, that is normal. I had two 800's on which all windows were one touch down and up, but the two 75's I've had (a 1999 and a 2004) have only had the one touch up on the driver's door. Progress I think they call it!

14-11-2006, 17:52	#5
Moonstone Registered User Join Date: May 2006 Car: Rover 75 Tourer Posts: 662	Wouldn't the anti-trap mechanism have to be fitted to any window with one-shot up?

14-11-2006, 18:34	#6
Sejin26 Registered User Join Date: Nov 2003 Location: South Yorkshire, Rotherham Car: Rover 75 Posts: 11,612	It would MoonStone. But since there is no easy way of doing it there is no point.

14-11-2006, 21:05	#7
surreyranger Registered User Join Date: May 2005 Car: MG ZTT Posts: 41	No easy way of fitting the anit-trap mechanism or the "one-touch up"?

14-11-2006, 21:27	#8
MeAndMyself Registered User Join Date: Sep 2006 Location: Lichfield Car: MG ZT Posts: 123	I believe it would be very much inpossible to retro fit a one-touch up system to the remaining three windows. You'd either have to re-program the BCU or bypass the BCU entirely and fabricate your own window control computer.

14-11-2006, 22:16	#9
surreyranger Registered User Join Date: May 2005 Car: MG ZTT Posts: 41	Thanks. Begs the question - why on earth didn't they put it in in the first place? Safety? Cost cutting?

14-11-2006, 22:22	#10
MeAndMyself Registered User Join Date: Sep 2006 Location: Lichfield Car: MG ZT Posts: 123	I'd hazzard a guess and say neither. If the BCU has the logic to control one-touch operation in any direction then it wouldnt take a huge leap of imagination or cost to have all windows as one-touch up/down. From my experience though, I'd say it has more to do with a luxury feature. If you think about it, your passengers (front or rear) have all the time in the world to raise/lower their repective windows. As the driver, you cannot afford to be distracted by having to keep your finger on the window switch hence the one-touch operation. I know my previous car (2002 Astra SRI) had one-touch up/down on front windows but the rear were manual winders. As for our Honda Civic (P-reg) Only the drivers is one-touch down but not up with all others being regular electric windows. I guess its horses for courses.

15-11-2006, 05:05	#11
Alex30013k Registered User Join Date: Jan 2004 Location: Ashford Kent Car: Rover 75 Posts: 3,498	The Ford mondeo has them up and down, but they don’t have the same anti trap system as the 75, All the windows in the mondeo have pressure sensors so if you put strain on the window it will stop, but this is a good thing but then the rubber that the window uses to seal its self has to be quite lose so it does not stop the window when it gets dirty/ sticky, That is why in every mondeo you will go in had wind noise coming into the cabin on all windows. Well that’s the case in the 6 mondeos I have been in! So I would rather just have one the drivers up than have wind noise.

15-11-2006, 17:42	#12
surreyranger Registered User Join Date: May 2005 Car: MG ZTT Posts: 41	I don't have any wind-noise from my drivers side so I can't see that being a problem on the other windows. "MeAndMyself" - pretty much what I was getting at. I suspect too that it is a pure logic/programming thing. If a window has "one-touch" down then surely the mechanisms are all there for the reciprocal "one-touch" up as well. Just wanted to see if anyone had any firm knowledge on this. I had a Volvo S80 before and virtually everything was programmable from the software (Vadis system) as all electrics were/are multiplexed. (Length of time on for courtesy lights, headlamp operation, central locking operation following "plip" activation and so on) Wonder if the MG systems have the same with regard to windows etc.

15-11-2006, 23:01	#13
MeAndMyself Registered User Join Date: Sep 2006 Location: Lichfield Car: MG ZT Posts: 123	As far as I know the MG Rover system is a bit more complex. I don't know of anyone being able to reprogram the cars computers. You can select different options for the car on Testbook (such as courtesy lights on/off or tell the car if the Hi-Line SatNav is fitted), but I'm afraid I don't recall window operation being a changeable variable.

16-11-2006, 08:38	#14
Dizzy Registered User Join Date: Oct 2004 Location: East Anglia Car: Rover 75 Posts: 125	I wish this 'one touch' function was changeable. I almost never want to take my window right the way down but I often want just a 1/2" gap to let some air through so as to stop the windows getting steamed when I'm parked up eating my chips. By the time I've managed to stop the window whizzing up and down, the chips have got cold!

16-11-2006, 09:40	#15
MeAndMyself Registered User Join Date: Sep 2006 Location: Lichfield Car: MG ZT Posts: 123	The one touch function is operable by a single quick press of the button. If you keep your finger on the button and let go when the window has reached the desired hight, it should stay put.

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