Lexia and C8 cruise control.

This is the Forum for all your Citroen Technical Questions, Problems or Advice.

Moderator: RichardW

Post Reply
Richiejh
Posts: 9
Joined: 03 Jul 2011, 22:37
Location: Taunton, Somerset
My Cars:

Lexia and C8 cruise control.

Post by Richiejh »

Hi,

I've got a december 2005 citroen C8 2.2HDi and i would like to retrofit cruise control.

I've got Lexia 3 on my laptop and used it to succesfully install the genuine citroen towing electrics kit which was dead easy.

Using Lexia i'm looking for options regarding cruise control to make sure it's possible before i invest in the switch stalk but the only reference that i can find is on fault code reading.

Can anyone confirm if it is possible to do and how to do it?
User avatar
DickieG
Monaco's youngest playboy
Posts: 4877
Joined: 25 Nov 2006, 09:15
Location: Buckinghamshire
My Cars:
x 38

Post by DickieG »

Search on the forum for fitting cruise to other models such as a C5 as I think there are threads stating how to do it. IIRC you need to look for 'RVV' and activate that + maybe one other thing.
13 Ram 1500 Hemi
14 BMW 535D Tourer
19 BMW i3s
06 C3 Desire 1.4
72 DS 21 EFi Pallas BVH
wheeler
Posts: 6847
Joined: 21 Sep 2002, 19:07
Location: United Kingdom
My Cars:
x 717

Post by wheeler »

Go into the injection ECU & find the option RVV (French abreviation for cruise controll) & set it to present
Richiejh
Posts: 9
Joined: 03 Jul 2011, 22:37
Location: Taunton, Somerset
My Cars:

Post by Richiejh »

Thanks for the info, I'm going to connect up tomorrow and try and find the RVV and injection ECU options.

There are a number of rumours floating around that the cruise control activation operation was disabled on either car or lexia software at some point, this was apparently to stop dealers fitting CC to cars in the workshop for less than the option when new. The factory option was near £400 but the parts and labour cost more like £100.

That would be typical of a manufacturer to protect their income.
Citroenmad
Posts: 8125
Joined: 04 Dec 2008, 22:08
Location: Northeast
My Cars: 07 Citroen C6 V6 HDi Exclusive - Red
07 Citroen C5 HDi VTR - Red
09 Citroen C3 1.4i VTR - Silver
01 Citroen Saxo 1.1i Forte - Mango Orange
93 Ford Mondeo 2.0i GLX
19 Hyundai i10
x 110

Post by Citroenmad »

Im not sure with the C8 but with the C5s some cars need a secondary brake switch installing to allow the cruise to work. I fitted it on my 2004 C5 and it worked fine just by adding the stalk and programming the car to have cruise with a Lexia.
Chris
07 Citroen C6 V6 HDi Exclusive - Red
07 Citroen C5 HDi VTR - Red
09 Citroen C3 1.4i VTR - Silver
01 Citroen Saxo 1.1i Forte - Mango Orange
.
93 Ford Mondeo 2.0i GLX
19 Hyundai i10
sifaan
(Donor 2020)
Posts: 25
Joined: 11 Apr 2011, 13:51
Location:
My Cars:

Re: Lexia and C8 cruise control.

Post by sifaan »

Richiejh wrote:Hi,

I've got a december 2005 Citroën C8 2.2HDi and i would like to retrofit cruise control.

I've got Lexia 3 on my laptop and used it to succesfully install the genuine Citroën towing electrics kit which was dead easy.

Using Lexia i'm looking for options regarding cruise control to make sure it's possible before i invest in the switch stalk but the only reference that i can find is on fault code reading.

Can anyone confirm if it is possible to do and how to do it?
preconditions for cruise control
car must have motorized throttle body - on C5s only the earliest (RPO upto 9443) had cables so this was not much of an issue; no idea how it is with C8s.
you will need an additional brake switch (if there's only 1, it's for the lights) and (I think) also a clutch switch if it's a manual.
my C5 was auto, but had the brake switch even though it didn't come with CC

if you don't have a motorized throttle, then lexia may well be not showing the option for you...
wheeler
Posts: 6847
Joined: 21 Sep 2002, 19:07
Location: United Kingdom
My Cars:
x 717

Post by wheeler »

It's a diesel so it doesent have a throttle.
Richiejh
Posts: 9
Joined: 03 Jul 2011, 22:37
Location: Taunton, Somerset
My Cars:

Post by Richiejh »

It's got a fly by wire electronic throttle which is ECU controlled and i've checked the pedals which have 2 brake pedal switches and a clutch switch.

Hopefully all i need is the stalk and a fair wind from the goddess Lexia!
Richiejh
Posts: 9
Joined: 03 Jul 2011, 22:37
Location: Taunton, Somerset
My Cars:

Post by Richiejh »

I've found the rvv option in the injection ECU and can enable it, the stalk is on order from that auction site.

As soon as it arrives it will be fitted and activated, thanks for the help.
manafas
Posts: 27
Joined: 23 Jun 2019, 19:27
Location: Horley
My Cars: Citroen C8 2.0 SX HDI
x 2

Re: Lexia and C8 cruise control.

Post by manafas »

Hello
I know this was some time ago, but did you have any luck installing the CC on your C8?
Trying to do the same
Thank you
User avatar
Paul-R
Donor 2023
Posts: 6916
Joined: 07 May 2009, 16:24
Location: Wirral, NW England; Vaucluse 84, France
Lexia Available: Yes
My Cars: 2015 1.6 Blue HDi 120 Peugeot 308 Active SW
2013 2.0 HDi 163 C5 Exclusive Tourer
2003 2.0 HDi 110 C5 Exclusive Estate (Gone)
2001 2.0 HDi 90 Xsara Estate (Gone)
x 1369

Re: Lexia and C8 cruise control.

Post by Paul-R »

Richiejh last visited the forum on Tue Jul 12 2011 at 9:29 pm so I doubt you'll get reply from him!
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

"Trying is the first step towards failure" ~ Homer J Simpson​
Post Reply