Bleeding front brakes on a Citroen C5
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  1. #1
    Fellow Frogger! dieselman's Avatar
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    Default Bleeding front brakes on a Citroen C5

    Hi All,
    I replaced the front disc pads on my 06 C5 yesterday.
    I had to remove the drivers side caliper altogether to support it whilst the piston was wound back in. I let some of the brake fluid drain out, as I intended to bleed some new fluid through anyway.
    I bled the brakes conventionally until no air was present.
    Now the pedal seems firm, but will sink to the floor when the engine is running and pressure is kept on the brake pedal.
    I read that a Lexia might be required to bleed the ABS system, so a trip to a dealer may be in order.

    Any suggestions are most welcome.

    Thanks.

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    Leon

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    Fellow Frogger!
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    Quote Originally Posted by dieselman View Post
    Hi All,
    I replaced the front disc pads on my 06 C5 yesterday.
    I had to remove the drivers side caliper altogether to support it whilst the piston was wound back in. I let some of the brake fluid drain out, as I intended to bleed some new fluid through anyway.
    I bled the brakes conventionally until no air was present.
    Now the pedal seems firm, but will sink to the floor when the engine is running and pressure is kept on the brake pedal.
    I read that a Lexia might be required to bleed the ABS system, so a trip to a dealer may be in order.

    Any suggestions are most welcome.

    Thanks.
    Quite correct But i usually see the bank manager first Bloody rip off merchants.

  3. #3
    Fellow Frogger!
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    Not familiar with this froggy marque, have you braked hard enough to activate ABS to see if this cures the problem??

    David

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    Fellow Frogger! dieselman's Avatar
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    Default Re: Bleeding front brakes on a Citroen C5

    No, but I guess it's worth a try.
    Leon

    1987 Peugeot 505 GTD
    2010 Citroen C5 3.0 V6 HDi
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    Fellow Frogger! dieselman's Avatar
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    Default Re: Bleeding front brakes on a Citroen C5

    That didn't work.
    I also pumped nearly a litre of brake fluid through.
    Not much better.
    Looks like the Lexia bleeding solution will have to be it.
    Leon

    1987 Peugeot 505 GTD
    2010 Citroen C5 3.0 V6 HDi
    2010 Citroen C5 3.0 V6 HDi (wife's car)

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    UFO
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    I believe there is a certain order that you need to do it in, starting at the rear. Let me see if I can find the info.
    Craig K
    2009 C5 HDi Exclusive

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    Fellow Frogger! dieselman's Avatar
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    Is this the sequence you're referring to?

    http://autos.groups.yahoo.com/group/C5-L/message/10434
    Leon

    1987 Peugeot 505 GTD
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    Quote Originally Posted by dieselman View Post
    That didn't work.
    I also pumped nearly a litre of brake fluid through.
    Not much better.
    Looks like the Lexia bleeding solution will have to be it.
    Again old buddy, quite correct. Lexia to operate the internal valves on the ABS is what's needed. No way out of it.

  9. #9
    Fellow Frogger! dieselman's Avatar
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    Booked in to get this done on Wednesday.
    Leon

    1987 Peugeot 505 GTD
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    1000+ Posts gerry freed's Avatar
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    Quote Originally Posted by shanadoo View Post
    Again old buddy, quite correct. Lexia to operate the internal valves on the ABS is what's needed. No way out of it.
    exactly so!
    the time has arrived when you leave the bonnet tight shut, get any car serviced by the properly equipped dealer and when it gets too expensive you call the wrecking yard to collect it. How many people service their own refrigerators?
    Think Global - Ride on Spheres

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    Quote Originally Posted by gerry freed View Post
    exactly so!
    the time has arrived when you leave the bonnet tight shut, get any car serviced by the properly equipped dealer and when it gets too expensive you call the wrecking yard to collect it. How many people service their own refrigerators?
    So right. I wouldn't touch it myself.
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    Fellow Frogger! Ceenine's Avatar
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    Default C5 abs

    Load of rubbish, replaced pads, discs and brake fluid the other day - no problems.
    2014 C5 2.2 HDI Limited Edition Sedan
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  13. #13
    Fellow Frogger! dieselman's Avatar
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    Default Re: Bleeding front brakes on a Citroen C5

    I think the problems start if you drain the brake fluid!
    Leon

    1987 Peugeot 505 GTD
    2010 Citroen C5 3.0 V6 HDi
    2010 Citroen C5 3.0 V6 HDi (wife's car)

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    Quote Originally Posted by gerry freed View Post
    exactly so!
    the time has arrived when you leave the bonnet tight shut, get any car serviced by the properly equipped dealer and when it gets too expensive you call the wrecking yard to collect it. How many people service their own refrigerators?
    Hi
    I agree that this statement is a load of rubbish. My refrigerator has gone for 20 + years without servicing, and still going strong. The lesson; "Do not buy Citroen fridges"

    I have replaced my brake pads without probems. Citroens problem is that they assumed some stupid service senarios, and the software is crap. So their service tools are the only ones that can make sense of it. However if we leave it to the dealers then we will just throw these C5 away, as the dealers in Australia cannot fix them anyway and as they get older the cost will be more than the cars are worth. Thats the point of AF forum.

    The old conservative owners from the "good old days"can leave it to the the dealers and waste their money, the others who wish to learn can share the knowlege and post on here.
    Cheers Jaahn
    Last edited by jaahn; 12th March 2013 at 07:18 AM.

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    Hi Brainstrust.
    Help!
    A friend with a 2008 HDi C5 was on holiday in country Victoria when the low brake pad warning light activated. He was carrying spares for just this eventuality, he disabled the electric hand brake, set the car up for the work and extracted the worn pads.
    Then disaster strikes. A mobile phone call with a message takes his mind off the ball and results in the electric hand brake being actuated so now he has the pistons clamped to the discs.

    His question. If he cracks the bleed nipples and pushes back the calipers, inserts the pads and bleeds the system as you would in the 'good old days' is he doing the right thing. Where the car rests is not within easy access to any garage far less Citroen specialists.

    SF

  16. #16
    Real cars have hydraulics DoubleChevron's Avatar
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    Quote Originally Posted by ScotFrog View Post
    Hi Brainstrust.
    Help!
    A friend with a 2008 HDi C5 was on holiday in country Victoria when the low brake pad warning light activated. He was carrying spares for just this eventuality, he disabled the electric hand brake, set the car up for the work and extracted the worn pads.
    Then disaster strikes. A mobile phone call with a message takes his mind off the ball and results in the electric hand brake being actuated so now he has the pistons clamped to the discs.

    His question. If he cracks the bleed nipples and pushes back the calipers, inserts the pads and bleeds the system as you would in the 'good old days' is he doing the right thing. Where the car rests is not within easy access to any garage far less Citroen specialists.

    SF
    Do quick search. David S has posted often on completely disconnecting the handbrake so this won't happen. It sounds like it does expensive damage

    seeya,
    shane L.
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    Fellow Frogger! ScotFrog's Avatar
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    Quote Originally Posted by DoubleChevron View Post
    Do quick search. David S has posted often on completely disconnecting the handbrake so this won't happen. It sounds like it does expensive damage

    seeya,
    shane L.
    Thanks Shane,
    I checked out David S's comments.
    Sounds like he may have already entered the expensive damage phase unfortunately.

  18. #18
    Contented Peugeot Driver addo's Avatar
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    Glass half full, or is he like my Grandma, viz: "Someone's stolen my drink!"?

    What's to lose from having a go - you may succeed, it may be damaged but usable in the short term, but to sit and bleat does nothing for fixing. If the calipers are on a helical drive, respect it when pushing back.

  19. #19
    Real cars have hydraulics DoubleChevron's Avatar
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    Quote Originally Posted by addo View Post
    Glass half full, or is he like my Grandma, viz: "Someone's stolen my drink!"?

    What's to lose from having a go - you may succeed, it may be damaged but usable in the short term, but to sit and bleat does nothing for fixing. If the calipers are on a helical drive, respect it when pushing back.
    I'd be trying winding them back too first.... Worst case I'd get the pistons back in and the handbrake still doesn't work ............ Hey I own a CX ... the handbrake in them is usually barely any better than no handbrake

    seeya,
    Shane L.
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    '78 GS1220 pallas
    '92 Range Rover Classic ... 5spd manual.

    Yay ... No Slugomatics


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  20. #20
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    I think try to electrically disable and manually release the parking brake before going further.
    There should be a release pull in the centre console.

    Bleeding front brakes on a Citroen C5-x7_elechbrakerelease.jpg

    ( This is from the handbooks page at Citroen Service. You don't need to logon for access.
    See: http://service.citroen.com/ddb/index.html )

    Then address the pistons and pads and hope the handbrake still works when applied later. It may turn out that the motor part needs to be dismantled to check for damage and backed off to get it to go back together.
    Last edited by David S; 1st December 2014 at 06:33 PM.

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    There's an article describing how these devilish things work at http://www.motor.org.uk/documentlibr...1-techtalk.pdf. Citroen uses a cable puller type.

    They look like those made by KŁster in Germany.
    Last edited by seasink; 1st December 2014 at 08:27 PM.

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    I recently had this issue when i let the fluid drain below the master cylinder. Turns out there was air stuck in the master cylinder which needed removing. Once that was done bleeding proceeded as normal.

  23. #23
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    All good.
    In a separate thread somewhere my friend has responded and thanked the 'Brainstrust' for all the assistance he received. He has fixed the issue, car is mobile and prognosis looks good.
    Case closed.

    SF

  24. #24
    1000+ Posts Ken W's Avatar
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    Oh dear, I think I will disconnect the battery before I replace the back brake pads on mine.

    Cheers,

    Ken W

  25. #25
    UFO
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    You don't need to disconnect the battery Ken, just follow logic.

    In the car's menu, disable the auto park brake
    With car chocked or hoisted, deactivate park brake (push lever down with ignition on)
    Turn off ignition - park brake should not re-engage
    The auto park brake will now not activate
    During the work on the rear calipers you can easily disconnect the ends of the cables from the calipers
    Craig K
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