Cruise control issue- MG ZT 190SE Facelift

Maxfly · 16th June 2020, 19:46

Hi and first of all thanks for all the useful posts that have helped me already.
I have just bought my first ZT and am aiming to bring it back to full health. At the moment I can’t get cruise control to work, initially even the master switch wouldn’t light up (turned out is had been unplugged.......). Plugged it back in so it now lights up but still no cruise control. I have checked the proximity switches about clutch and brake, repositioning them to be sure as describing previous threads. I have also checked the vacum line from throttle body to inner wing on the off side. I’m currently stuck at this point and any pointers would be great please.

mileshawk56 · 16th June 2020, 19:53

The switch in the facia is sometimes faulty- if possible test my substitution. Chris S.

COLVERT · 16th June 2020, 20:18

As there are switches involved it could just be one of the switches.---

Maxfly · 16th June 2020, 20:38

Thank you both, I have a master and brake switch on the way but have put up a wanted thread for the clutch yin 👍

Maxfly · 11th July 2020, 19:34

Colvert was spot on. Replaced the brake pedal switch tonight and all works fine now. Looking at the switch that came out I believe it’s a non cruise switch.

genpk · 13th July 2020, 10:24

hard to tell the difference visually between non cruise and cruise brake switch.
Think the part number for the cruise has an “A” on the end ?

Maxfly · 13th July 2020, 18:03

Quote:

Originally Posted by genpk

hard to tell the difference visually between non cruise and cruise brake switch.
Think the part number for the cruise has an “A” on the end ?

Yes that’s right, I think the part number is on the rear and has no A on the end but wouldn’t be easy to get a pic of it as writing so small

goltho · 15th July 2020, 20:58

The non-cruise switches are white (the slider inside the housing) whereas the cruise ones are black, for info.

See https://rimmerbros.com/Item--i-XKB000022A

I spent a horrible couple of days fighting with brake switches recently after retrofitting cruise on my 03 KV6 ZT 180 with no wiring! I can guarantee that the above switch is correct. There is another one available from Rimmers (colour blue, can't remember the part no.) which is billed as double-pole and which will also work. There appears to be absolutely no difference in the spec though and it costs a little more.

Dougie.

16th June 2020, 19:46	#1
Maxfly Loves to post MG ZT 190 SE Join Date: Feb 2010 Location: Fort William Posts: 317 Thanks: 407 Thanked 110 Times in 75 Posts	Cruise control issue- MG ZT 190SE Facelift Hi and first of all thanks for all the useful posts that have helped me already. I have just bought my first ZT and am aiming to bring it back to full health. At the moment I can’t get cruise control to work, initially even the master switch wouldn’t light up (turned out is had been unplugged.......). Plugged it back in so it now lights up but still no cruise control. I have checked the proximity switches about clutch and brake, repositioning them to be sure as describing previous threads. I have also checked the vacum line from throttle body to inner wing on the off side. I’m currently stuck at this point and any pointers would be great please.

15th July 2020, 20:58	#8
goltho Can't help myself Rover 75 CDTi 2005 Join Date: Jan 2018 Location: Lincoln Posts: 869 Thanks: 469 Thanked 150 Times in 113 Posts	The non-cruise switches are white (the slider inside the housing) whereas the cruise ones are black, for info. See https://rimmerbros.com/Item--i-XKB000022A I spent a horrible couple of days fighting with brake switches recently after retrofitting cruise on my 03 KV6 ZT 180 with no wiring! I can guarantee that the above switch is correct. There is another one available from Rimmers (colour blue, can't remember the part no.) which is billed as double-pole and which will also work. There appears to be absolutely no difference in the spec though and it costs a little more. Dougie. __________________ R75 C2 RJBLH Connoisseur CDTi Auto Saloon • Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 • 122nd of 141 built that day • British Racing Green Pearlescent (HFF) • Sandstone leather with black piping (SPJ) • 137,000 miles Last edited by goltho; 15th July 2020 at 21:01..

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16th June 2020, 19:53	#2
mileshawk56 Posted a thing or two MGZT Join Date: Jul 2015 Location: Berkshire Posts: 1,280 Thanks: 1,738 Thanked 299 Times in 216 Posts	The switch in the facia is sometimes faulty- if possible test my substitution. Chris S.

16th June 2020, 20:18	#3
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	As there are switches involved it could just be one of the switches.---

16th June 2020, 20:38	#4
Maxfly Loves to post MG ZT 190 SE Join Date: Feb 2010 Location: Fort William Posts: 317 Thanks: 407 Thanked 110 Times in 75 Posts	Thank you both, I have a master and brake switch on the way but have put up a wanted thread for the clutch yin 👍

11th July 2020, 19:34	#5
Maxfly Loves to post MG ZT 190 SE Join Date: Feb 2010 Location: Fort William Posts: 317 Thanks: 407 Thanked 110 Times in 75 Posts	Colvert was spot on. Replaced the brake pedal switch tonight and all works fine now. Looking at the switch that came out I believe it’s a non cruise switch.

13th July 2020, 10:24	#6
genpk Posted a thing or two Rover 75 Saloon MGZT Join Date: Jul 2012 Location: Perth, AUSTRALIA Posts: 1,662 Thanks: 3 Thanked 461 Times in 299 Posts	hard to tell the difference visually between non cruise and cruise brake switch. Think the part number for the cruise has an “A” on the end ?