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Thanks Paul. I wasn't considering buying it, I've already got a 3.0 HDi Tourer (very good car), I was interested to know if this was a badge I could get from Citroen just to make mine stand out a little. Surprised to read you say that it's a mod that should be reported to the insurer, what's your thinking behind that? If it's advertising the fact that it's a (rare) V6, then the twin exhausts do that.

There's a 59-reg C5 3.0 HDi for sale on Autotrader (click here). I notice in one of the photos a 'V6 HDI' badge on the left hand side of the boot lid, opposite the "C5 Exclusive" badge. To the untrained eye, it looks a similar font, so is this an official Citroen badge applied at manufacture? If it is, then it's the first I've seen.

Many thanks. I did get (what's left of) the old ones off without having to dismantle the earphone, the foam was tucked into a small gap all the way round.

My 2007 '56' reg C4GP came with the DVD entertainment system, it works fine but the foam covers over the earpieces of the wireless headphones are shot. I wouldn't have thought for a moment that these covers are a Citroen replacement part (probably not even the complete headphone unit themselves, though it would seem a little over the top to have to replace these just for the sake of some foam). Questions: (1) does the earpiece itself (i.e. the bit that sits on the ear) come off (by pulling? twisting??) so that I could fit a new cover - the cover is folded neatly under the lip of the earpiece body to make a tight fit. (2) I notice two small screws immediately above the earpiece, are these perhaps securing the earpiece to the headphone body? (3) can any other wireless headphones be used instead?

Has anyone installed a maps update to the NaviDrive NG4? Specifically, how many CD's should I have? I just bought the 2016-2 update from carsnavigation.com, the instructions, such as they are, mention 2 DVD's and 2 CD's: (1) insert CD1 Firmware, install it. (2) Insert DVD1, install it. (3) Insert DVD2, install it. (4) Insert CD2/POI, install it. Whilst I have 2 DVD's, there is only 1 CD "Firmware Update". This seems to be the CD mentioned at instruction (1). Should I use this same CD again at instruction (4)?

Not sure if the posts here refer to the Mk II C5 or the Mk III. I've got a Mk III 59-plate 3.0 HDi Tourer and I'm convinced it's riding low at the front, particularly as the mudflaps now strike local speed humps where previously they haven't. My Citroen dealer is unconvinced. How can I convince him? I bridled at post #18 - isn't there a more simple measurement of the clearance between the ground and the underside of the top of the wheel arch, with an unladen car, suspension in 'Normal' setting and standard (or at least factory-fit option) alloys/tyres? The handbook only shows the vertical distance between the ground and the top edge of the roofbar, though it's not clear if this is meant to be the mid-point of the roof.

Coastline - I took it in for a main-dealer service and had the wishbones fully checked out, they reported no signs of wear or play in them. They recommended I get the tracking checked - do you think this might be the cause?

I think I'm lucky to be here to write this. A couple of days ago, I was thundering along in the outside lane of a 3-lane carriageway (A road, not M-way) in my C5 Tourer when the puncture alarm went off. Fortunately I retained control and safely made it to a handy lay-by. I hopped out and found the front offside tyre completely deflated, plus a very pronounced smell of burning rubber. I assumed a blow-out but the AA guy who came to change the wheel pointed out the valve was loose so he thought this had failed. When I took the wheel to a local tyre store, they discovered the valve was actually a pressure sensor emitter but without the nut which secures it, he pointed to some corrosion to the threads of the sensor and assumed a catastrophic failure in the collar nut. Inspection of the other wheels shows the corresponding nut on the nearside front wheel is clearly cracked and presumably awaiting the same fate. Does anyone know of this problem? The car is 5 years old and both front tyres were new less than a year ago - I don't know if this is relevant.

Many thanks, Coastline. The Saxo is going in before too long for a clutch release bearing so I might as well get the wishbone bush done at the same time.

Paul - no signs of uneven wear. And no mention of any work on the suspension in all the servicing receipts that the previous owner kept and passed on to me. The front tyres had both been replace at 25k, just before I bought it - and with the 11k since then, the tyres are both wearing uniformly.

Hi Paul - many thanks for your replies. The instructions do sound straightforward in principle. I've changed car batteries before although some I've baulked at, e.g. where you have to dismantle part of the bulkhead (Passat 2.5 TDi), and this one looks more complicated than it probably is due to it's cramped location plus a plethora of thick and thin cables and connectors. If you like I'll try and post a picture or two if I can work out how to (that's 'how to post a pic', not 'how to use my camera'!). Regarding choice of battery, I couldn't find any labels on the existing one, at least not on the side facing you - probably on the reverse side nuzzling up to the rear wheel arch. The most expensive Bosch (S6) has 70Ah rating according to the europarts web site, wheras far cheaper ones like I can find, e.g. on allbatteries.co.uk (NX and Fulmen at £75-£100), have 92-100Ah ratings, so is it just all about the Ah rating? I also notice the length of the S6 (278mm) is a lot shorter than all others (353mm) so I wonder if this may cause a fitting problem. I notice the expensive Exide (EK700) has the same rating and dimensions as the Bosch S6 which bears out what you said about Exide being part of Bosch. Interestingly, the Bosch web site (http://rb-aa.bosch.com/aa-batterien/gb/en/pkw/media/brochure_S6.pdf) suggests there are two S6 variants, one at 70Ah (length 278mm) and another at 95Ah (length 353mm) so it sounds like europarts.com may not be quoting the correct S6 for my car.

Hi All, I'm probably doing this in slightly the wrong order, having already posted on one of the technical forums yesterday. I have three of the double-chevron marque: I drive a C5 3.0 HDi Exclusive Tourer 59-plate, my wife has a C4 Grand PIcasso 2.0 HDi Exclusive 56-plate, and I bought a Saxo 1.1 Desire 53-plate for my daughter. I tend to try and look after my cars, but the days when I used to do serious stuff like change wheel bearings and take engines to bits (usually with BL cars...1100, 1300, and Ford Anglebox 123E) are long gone. These days it's mostly a question of keeping them up to date on maintenance with a Citroen dealership stamp (maybe I'm old fashioned but I still believe there's some intrinsic value in having the twin-chevron stamps all over the maintenance history booklet) and detecting any early signs of things going wrong and getting them fixed pronto - I've had plenty of experience in this regard with the C4GP (I could write a book....ours is one of the first models registered in Jan 2007 - the early ones Citroen released on an unsuspecting public were still clearly going through the QA program). Plus I keep them fastidiously clean inside and out which is a challenge sometimes with the Saxo which my daughter tries to make as untidy as her bedroom - and succeeds most of the time. In the past between my wife and I we've had a Mehari (there's nothing quite like driving in the middle of winter wrapped up like the Michelin man with one hand on the canvas roof to stop it blowing away), a 2CV Beachcomber, a ZX, and a Xantia. There seems to be quite a number of forum sites. I've posted several time before on www.citroenpicasso.org.uk/picasso and www.c4owners.org regarding the C4GP and more recently came across www.citroenownersclub.co.uk (which seems a bit superficial) and www.frenchcarforum.co.uk before finding this one. If you think anyone would be interested, I'd be happy to write a post about my experiences with the C4GP (it would be quite long). I was thinking of writing to Citroen themselves but I don't think I'd be telling them anything they don't already know and I can only hope the new GP just released has got all the problems sorted. Only last week I discovered the panoramic sunroof not working .. this must be the least stressed part of the car over the seven years we've had it, but still going to cost me £750 for a new motor. The C5 is fabulous to drive with plenty of reserve grunt with the pedal down but sadly this too is not without its "foibles". The Saxo as you might imagine is the most reliable of the three, it's a smashing little car in bright red with only 36k miles ...it was a one-owner job, a careful pensioner who regularly did 4k miles a year and had it serviced every 12 months from the main dealer he bought it from. The only quirk this has is a slight pull to one side on accelerating but you get used to it and it sounds like a transmission job (££££) to resolve which might cost more than the car is worth - my local Citroen dealer told me to just swap the front wheels over (he'd had a hard day and really wasn't up for this conversation at 5:29pm) which I did with absolutely no difference surprise surprise. Sorry to prattle on. Looking forward to getting good advice and guidance from the posts and contributing a few myself.

I have a 59-plate 3.0 HDi Tourer Exclusive. In recent months, I've discovered if I don't start the car for a couple of days, the electronic tailgate lift doesn't work (it just gives a few bleeps) and the main console display doesn't light up with the mileometer etc... There's no issue with turning the engine over to start, and as soon as it does then the tailgate opens and closes OK. So is this symptomatic of early signs that the battery is starting to lose its charge? Would I be right in assuming that when it gets below a certain level, then non-essential functions are deactivated on the basis that it needs to save what charge it has to start the car. Given the car is now over 4 years old, then I'm not particularly bent out of shape if the battery needs replacing (though it does seem to be a bit "nanny state" deactivating things because the battery may not be as robust as it was - if there's enough charge to turn the 3.0 HDi engine over, then surely there's plenty to lift the tailgate?). So I'm looking to get a replacement battery, which leads me to the subject of this topic. Is changing the battery a diy job? I popped into my local Halfords to suss out batteries (as it turned out, they don't actually do one for this model, they cover the 2.7 HDi from 2007-2010 and the "2.9" from 2007 to 2008 - so this sounds like it's not a run-of-the-mill battery). Give the young and enthusiastic assistant some credit - he was about to look for the bonnet release but as soon as I asked him if he knew where the battery was located, he worked out that it must be in the luggage compartment. But then as soon as he saw it, behind the side panel cover, he blanched visibly and said it was best left to someone who knew about Citroens, which sadly rules out my local Citroen dealer where I've been twice bitten and three times shy due to their staggering incompetence. So can anyone point me to some directions/instructions? The handbook doesn't give any indication, however it does say rather ominously that after the battery has been disconnected/reconnected you have to re-initialise the remote locking key, the panoramic sunroof and the GPS Satnav! It gives some details on the first two elsewhere in other sections, but I can't find anything about "re-initialising the Satnav" - any tips? Does anyone have any recommendation on make/model of battery? The dealer price is £160 but a google search throws up much cheaper alternatives. I don't know what the minimum spec of the battery should be (the handbook doesn't say) however in another thread where someone else had the same tailgate problem, the advice was to "buy a stronger battery such as a Bosch". I looked on eurocarparts.com and it throws up 7 models (Lion, Exide and Bosch) ranging in price from £95 to £180. All help gratefully received.