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Parking brake module won't stay in service mode

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GeordieInExile   
Wed Jan 24 2024, 10:54am
Joined: Sep 04 2023
Member No: #5348
Location: North East England
Hi again folks,

With mega thanks to Mike for the set of cables.

However, to get the cables fitted the module needs to stay in service mode. Mine won't. Any advice on how to get it to stay there would be very much appreciated!

Once the brake is sorted I'll be listing my C6 for sale so I can replace it with something less temperamental and more practical, by the way. It will be priced to sell, so keep an eye out if you're in the market for a 2.7HDi Executive with the lounge pack.
MGmike   
Wed Jan 24 2024, 01:40pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
That's a strange one! What diagnostic tool are the garage using?

I guess the only other way will be to remove the unit, open the lid and do it manually.

What makes you thing the C6 is temperamental
MGmike   
Wed Jan 24 2024, 01:47pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
Actually, thinking about it, you might get away with just disconnecting the unit connector and sliding the mechanism to each side to attach the cables. Attach the one without the threaded section first.
GeordieInExile   
Wed Jan 24 2024, 02:33pm
Joined: Sep 04 2023
Member No: #5348
Location: North East England
Thanks! I've suggested this to the garage - they have a few diagnostic tools they could use, apparently, so they're gonna try the alternatives. They aren't keen to do it manually in case they manage to break the module in the process and create an even bigger problem.

Why why why did Citroen think this was a good system when a good old fashioned manual handbrake had done the job just fine for decades previously?
Tjensen   
Wed Jan 24 2024, 03:49pm
Joined: Jul 17 2012
Member No: #954
Location: Bergen
The parking brake is also the emergency braking system. Maybe with some electronic inbuilt service to help adjusting brake force ? And it is prepared for automatic function.
MGmike   
Wed Jan 24 2024, 06:30pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
GeordieInExile wrote ...


Why why why did Citroen think this was a good system when a good old fashioned manual handbrake had done the job just fine for decades previously?


They are not alone! A lot of cars from 2010ish have something similar or worse!
GeordieInExile   
Fri Jan 26 2024, 10:38am
Joined: Sep 04 2023
Member No: #5348
Location: North East England
It just gets better -having fitted the new cables they now think there's a problem with the module itself.

Anyone got a spare...?
MGmike   
Fri Jan 26 2024, 02:11pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
Think I have a useable one in the spares pile. Let me check tomorrow.
I defo have one on the spares car but I won't have time to take that off for a few weeks!

If I do find one I'll be in the toon next weekend...
GeordieInExile   
Fri Jan 26 2024, 05:15pm
Joined: Sep 04 2023
Member No: #5348
Location: North East England
That would work out extremely usefully, in that case...! Fingers crossed there's one on the pile. How much would you want for it if you had it?
onthecut   
Fri Jan 26 2024, 05:31pm
Joined: Sep 20 2016
Member No: #2793
Location: West Mids
Sounds like a typical depressing saga when a garage gets involved. Before condemning anything, I would be a little suspicious of their diagnostic prowess from your description.
The manual says the cables need to be adjusted using the diagnostic tool after replacement and from my experience with a C5 we have that appears to share the system, this is quite an important step to get a good result. As it happens, never had any issues with the handbrake on my C6, but then again, it only gets used once a year, at the MOT.
On the C5 we came across two other issues --- knackered bushes where the cable attaches to the arm and perhaps a little more tricky -- following the fitment of new pads we absolutely couldn't get one side to adjust up. In the end, discovered we had wound the piston in too far, such that the handbrake lever was having no effect. Don't know if eiher might apply to the C6 as I think they are a different make of caliper, but just something to bear in mind.

Mike.
Jas16   
Fri Jan 26 2024, 06:33pm
Joined: Feb 07 2017
Member No: #2994
Location: West London
Be careful with modules from other cars, I believe that they are coded and even Citroen themselves are not able to recode.

When my handbrakes went, I tried the secondhand route and didn't work. So I had to stump up a new unit and had to have it coded by Citroen.

Are you not able to communicate with the module in it's current condition?

I don't know a local specialist to yourself, but I hope the unit could be reset
MGmike   
Fri Jan 26 2024, 06:39pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
Jas16 wrote ...

Be careful with modules from other cars, I believe that they are coded and even Citroen themselves are not able to recode.

When my handbrakes went, I tried the secondhand route and didn't work. So I had to stump up a new unit and had to have it coded by Citroen.



Handbrake units are not coded. They are configured to the car e.g. auto or manual and if you had trouble with a used unit it was because of something else.
MGmike   
Sat Jan 27 2024, 01:41pm
Joined: May 21 2017
Member No: #3151
Location: South Queensferry
GeordieInExile wrote ...

That would work out extremely usefully, in that case...! Fingers crossed there's one on the pile. How much would you want for it if you had it?


The pile has indeed provided a usable (untested) unit. See PM for further info
GeordieInExile   
Mon Feb 05 2024, 12:49pm
Joined: Sep 04 2023
Member No: #5348
Location: North East England
Mega thanks to MGMike for his time and help at the weekend! Looks like the C6 needs either a new handbrake module or a repair to the existing one.

Car is now listed in the for sale section, so if you're interested please do drop me a line - will consider a swap for an estate as well as a sale.
321dave   
Tue Feb 06 2024, 08:01am
Joined: Sep 09 2011
Member No: #614
Location: Dublin
Hi Mike,
I was wondering do you still have the handbrake cables you had specially made still in stock?

Kind regards
321Dave
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