C5 X7 2.0 hdi auto electronic parking brake problem

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

Moderator: RichardW

User avatar
myglaren
Forum Admin Team
Posts: 16059
Joined: 02 Mar 2008, 14:30
x 497

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by myglaren » 21 Aug 2019, 20:25

RichardW wrote:
21 Aug 2019, 20:15
But there's a lot of wiggle room, given that a new unit costs over a grand - which is frankly obscene for something that is bound to fail at around 8 years old. In the US that would no doubt be grounds for a class action....
Given that it isn't an isolated problem then I'm sure it would be carried through.

John (JRGA1) had similar problems last year. Can't remember how that was resolved.

User avatar
GiveMeABreak
Forum Admin Team
Posts: 15841
Joined: 15 Sep 2015, 19:38
x 1471

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by GiveMeABreak » 21 Aug 2019, 20:38

The X7 system is supposedly designed for 16,777,214 application cycles. - but I guess not if you're on UK salted roads....

User avatar
myglaren
Forum Admin Team
Posts: 16059
Joined: 02 Mar 2008, 14:30
x 497

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by myglaren » 21 Aug 2019, 20:56

That's a weird number. Why not 16,000,000 or 17,000,000.
Never going to reach that anyway.

Y Cymro
Posts: 76
Joined: 11 Sep 2017, 11:36
x 5

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by Y Cymro » 21 Aug 2019, 21:34

myglaren wrote:
21 Aug 2019, 20:56
That's a weird number. Why not 16,000,000 or 17,000,000.
Never going to reach that anyway.
I saw that on another thread here when researching this. It equates to 2^24+2. I assume the +2 is just to be safe :-D
If Citroen uses 24-bit registers in the handbrake ECU then 2^24 is the largest number of addresses possible.
In my case I suppose it’s unfortunate that a £10 cable snapped because the rest of it is good, probably for at least another 15 million applications.

Y Cymro
Posts: 76
Joined: 11 Sep 2017, 11:36
x 5

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by Y Cymro » 21 Aug 2019, 21:38

GiveMeABreak wrote:
21 Aug 2019, 20:38
The X7 system is supposedly designed for 16,777,214 application cycles. - but I guess not if you're on UK salted roads....
Other than the cable snapping the rest of the unit is in good condition, and even the manufacturers protective white grease is intact.

I’ve posted on a few online breakers requesting the part (Citroen Part No 1612865480), but honestly don’t hold out much hope.

On one of the photos, the EPB appears to have a removable top fastened by Torx screws. I’ll pop in the garage tomorrow to see if I can whip the top off to see what’s inside.

User avatar
xantia_v6
Forum Admin Team
Posts: 6551
Joined: 09 Nov 2005, 23:03
x 315

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by xantia_v6 » 21 Aug 2019, 21:45

See: viewtopic.php?t=60013 At the bottom of page 2, there is a link to a Polish vendor on allegro (similar to ebay) who apparently can supply and fit replacement cables.

Y Cymro
Posts: 76
Joined: 11 Sep 2017, 11:36
x 5

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by Y Cymro » 22 Aug 2019, 00:46

Thanks for the link. Being in Polish I have no idea what the webpage is on about but there’s an email link on it, and I’ve sent an email request asking whether they can do something for the C5.

User avatar
GiveMeABreak
Forum Admin Team
Posts: 15841
Joined: 15 Sep 2015, 19:38
x 1471

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by GiveMeABreak » 22 Aug 2019, 09:05

Steve, open the link using Google and it should automatically offer to translate the site for you using Google Translate.

Y Cymro
Posts: 76
Joined: 11 Sep 2017, 11:36
x 5

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by Y Cymro » 22 Aug 2019, 09:09

Thanks Marc. Unfortunately the text is in an image file and so it’s not even possible to copy and paste the text into a translation tool.

Just received a very rapid response from the seller:
“The handbrake mechanism is damaged if the cable breaks.
You need to send me a mechanism, we will change two cables and fix the engine inside”
Unfortunately, no mention as to the cost.

User avatar
GiveMeABreak
Forum Admin Team
Posts: 15841
Joined: 15 Sep 2015, 19:38
x 1471

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by GiveMeABreak » 22 Aug 2019, 09:45

They are pretty savvy, the Poles, so might be a goer - push them for a quote.

User avatar
Paul-R
Posts: 3356
Joined: 07 May 2009, 16:24
x 220

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by Paul-R » 22 Aug 2019, 10:15

Nobody going to try the links I put up?

Y Cymro
Posts: 76
Joined: 11 Sep 2017, 11:36
x 5

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by Y Cymro » 22 Aug 2019, 12:00

Paul-R wrote:
22 Aug 2019, 10:15
Nobody going to try the links I put up?
Paul-R wrote:
21 Aug 2019, 17:26
Has anyone ever contacted one of the bespoke manufacturers of cables? One of them might have a solution.
A quick Google came up with these:
https://speedycables.com/heavy-duty-cables/ (a name I remember from the past)
http://www.cable-tec.co.uk/Applications ... Cables.asp
https://www.venhill.co.uk/custom-cables/
https://www.thediscdirectory.co.uk/wm/c ... 89431.html
Hi Paul
Thanks for the links - I had to wait for a quiet moment to phone them!
None has a pattern part off the shelf but all offered to take a look if I can send the part to them. Just providing an inner would be less than £20, but of course, being a Citroen, the whole inner and outer will probably be required.

Coincidentally, Speedy Cables are about 20 miles from me so I'll see if the cable can be stripped from the EPB unit and pop it up there.

No reply yet from the Polish guy about a cost for replacing the cables.

User avatar
Paul-R
Posts: 3356
Joined: 07 May 2009, 16:24
x 220

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by Paul-R » 22 Aug 2019, 13:41

If one (or more!) of the bespoke cable suppliers can fabricate a new cable section then this would be a vast improvement over having to shell out for a complete calliper assembly. If the Polish guy can do it surely someone in the UK can do it?

Y Cymro
Posts: 76
Joined: 11 Sep 2017, 11:36
x 5

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by Y Cymro » 22 Aug 2019, 15:31

I agree. But the local Citroen specialist is having a problem dismantling the EPB casing. As well as fasteners it appears to be glued. I’m popping over now to give him a hand.

Y Cymro
Posts: 76
Joined: 11 Sep 2017, 11:36
x 5

Re: C5 X7 2.0 hdi auto electronic parking brake problem

Post by Y Cymro » 23 Aug 2019, 10:16

Had a reply from Poland:
“Repair time 3-4 days, shipment 80 PLN
In the worst case, PLN 800 repair, only replacement of cables PLN 400”

Which at today’s rates, is £17 for return delivery (ie one way), £167 for cables and repair to EBP or £85 to replace cables only.