C5 Cruise control DIY

Post by **Sir Clive** » 02 Jun 2006, 08:02

I've now got all the bits fitted to my car. (Hdi 110). I had to buy the extra (red) brake switch, the nylon clip which holds it in place (very important, I thought it would be supplied with the switch-it wasn't

And of course the steering column mounted switch.
The job took about an hour, working slowly and carefully. I used a continuity tester to ensure the brake switch operated as soon as the pedal was slighly depressed. The wiring and plug for it is already there. Also, the steering column switch just plugs into place after first cutting the shroud, again, helpfully marked with the bit to be removed.
Now, all I have to do is get the RVV setting changed in the ECU, and it's going to be done at one of our local dealers this Monday. I'll report back if its a success. Also, if anyone is interested I can supply a list of the part numbers needed.

KevMayer · Post by **KevMayer** » 02 Jun 2006, 22:07

I have a C5 with cruise control which isn't working. It hasn't worked since I got the car 2 weeks ago.

Looks like your info could point me in the direction of finding out what is wrong with it.

Cheers, Kev

Post by **Sir Clive** » 06 Jun 2006, 15:44

I drove the car into my local dealer yesterday. 20 minutes later, and for the princely sum of £23.50 in labour, I drove out again with a perfectly functioning cruise control. I'm well pleased, the whole thing has only set me back about 70 quid.

Just as well since cambelt/front pulley renewal is due in a few months!!!

Ian Fearn · Post by **Ian Fearn** » 06 Jun 2006, 16:01

The Xantia cruise control is susceptible to corrosion of the metal contacts in the brake pedal.

If you take the pedal rubber off then flick off the top of the pedal (2 springs pop out) you can then see 3 thin contacts on thin pieces of metal.

If you flick the metal bits you can see where they make contact.

Clean the conections with a bit of emery clotch and re-assemble. Did my Xantia a few weeks back. Worked for a while but it's now packed up again!

I assume the longer term solution is to replace the switch. Not sure what the cost is but i've got a heater matrix to do which is a little more important!

Keith 1951 · Post by **Keith 1951** » 07 Jun 2006, 07:31

Very interested in this topic and getting a cheap Cruise Control.

Could you post the bits that I would require please.

wheeler · Post by **wheeler** » 07 Jun 2006, 18:26

You need a cruise control stalk & if you ave a brake light switch with 2 wires then you need an additional switch,if your brake light switch has 4 wires the no other parts are required.the injection ECU then needs to be programed with a lexia or Proxia machine.