| C4 - DS4 Owners :: Forums :: The Lounge :: The Lounge |
<< Previous thread | Next thread >>
|
Tyre Pressure monitoring |
    Please Register to enjoy additional Member Benefits |
|
Top Thanked Forum Posts: Today | Week | Month | Year | All time | Most Thanks Given: To member | By user
|
| Author | Post | ||||
routemaster1
 
|
|
||||
   Member No: #574
Joined: Jul 08 2007Location: Dorset |
As my rear tyres were nearing legal minimum, I ordered some new tyres online and went to have them fitted today (combined with an essential journey to take food to my isolating 89 year old mother-in-law). I asked for the new tyres to be fitted to the rear wheels, then moved to the front. The fitter asked me if I have TPMS. I told him that I have the modern type which run from the ABS system, so you can move the wheels anywhere you wish. He then told me that this is the old system, not specifying what the new one is. One of my memories of the early years of this site was the number of queries about C4s from the mid 2000s where there were sensors built into the valves where the stems used to corrode and snap. These worked by (presumably) sending signals to a receiver in the car, one of the issues being that it wasn't easy to switch wheels without causing issues in the TPMS. A quick look at wikipedia indicates that there are basically only the two systems with variations. Our (now written off) C3 had the indirect system, and our current C3 also has it. So am I missing something? Does the tyre fitter know what he is talking about? What system are other manufacturers fitting? |
||||
|
|
|||||
|
DeuxChevaux
|
|
||||
 Member No: #16472
Joined: Nov 21 2010Location: North Norfolk UK |
I have a 2015 DS4 which has wheel sensors. I can swap the around but until I have done more than about 10 minutes over 40ish mph they will give errors after a tyre change. They transmit a signal at intervals which reduces to 1 every 24 hours when stationary. I usually find that as soon as I get over 50mph and 5 miles it sorts itself out. My wife has a 2016 DS3 which has a completely different system which I have not had to examine yet but it is probably the abs sensor one you describe. No idea when the changeover date was but its 2015/16 somewhere I guess | ||||
|
|
|
||||
|
wunny
|
|
||||
 Member No: #42824
Joined: Nov 29 2015Location: Cardiff |
I had a tyre fitter tell me that he hadn't changed the valves, due to them having sensors in them. That was on the first pair of new tyres. The next set, at a different tyre depot, said he couldn't move the rear wheels from the back to the front, because of tyres sensors being front / back sensitive. Once he had the tyres off, he came and told me that there were no sensors in the tyres and moved the backs to the front and no problems occurred. So now, I was a bit concerned as to which fitter was right. Investigations said that it was all done on the ABS system, counting mis-match in wheel rotations, so I let down one of the tyres and went for a drive and after a few miles the tyre deflation warning came up. I pumped up the tyre I had let down, reset the system and no more warnings. I'm happy that the ABS system works, after a fashion, but it isn't overly quick to notice deflation. I suppose the car careering off in an unwanted direction would be another clue! So there you are - there are no tyre pressure sensors on my 2015 GP Exclusive + |
||||
|
|
|
||||
|
BigJohnD
|
|
||||
  Member No: #82
Joined: Jan 22 2007Location: Hoylake |
Generally speaking, new tyres go on the rear, irrespective of the TPMS or which axle propels the car. In my experience, tyre fitters do this without question. YouTube has several vids showing why. |
||||
|
|
|
||||
|
|||||
|
FrankBullitt
|
|
||||
 Member No: #19238
Joined: Apr 12 2011Location: Cambridgeshire |
DeuxChevaux wrote ... I have a 2015 DS4 which has wheel sensors... ...No idea when the changeover date was but its 2015/16 somewhere I guess Interesting, our last DS4 was a 2015 model (when it still looked like the original DS4 but all Citroen badges had been banished) registered in June 2015 and it has the newer type which uses the ABS sensors to monitor rotation - it is earlier cars that have the sensors in the wheels so as you say, for the DS4 the change would have been somewhere between the build of our two cars. I suspect that will vary from model to model. Swapping the wheels wasn’t an issue and from memory you could reset the monitoring via the computer as we did have a warning once. This is also how my current Passat works as we get tyre pressure warnings after the tyres have been changed (I tend to run at a higher pressure which the car detects is not the same now as the wheel will be rotating slightly quicker); as for the speed as a rule of thumb if I forget to do it then probably 3 miles into a journey it will flag up - a catastrophic deflation it would pick up quickly (and you’d know) but it’s useful if you have a slow puncture. |
||||
|
|
|
||||
|
neilp
|
|
||||
 Member No: #3384
Joined: Apr 21 2008Location: Bulwell, Nottingham |
I'm not sure about the technical method used on my 2016 DS4 but I do know (as I've had two punctures in a rear) that the system flags low pressure. After a repair, the first time then a replacement the second time (about a year later) the system resets itself. There is no option reset it via the 7" touch screen. |
||||
|
|
|
||||
|
routemaster1
|
|
||||
|
Member No: #574
Joined: Jul 08 2007Location: Dorset |
Thanks all for the replies. I didn't intend to restart the debate about new tyres on the rear. The people I use do not do this automatically. Unfortunately with a system with sensors built into the valves you cannot easily switch wheels so you have to just have the new tyres where the worn ones were. My question really was why this particular fitter was concerned about the TPMS, and whether he actually knows what he is talking about. It wasn't the usual chap I deal with, who is very knowledgeable. I am aware that my C4GP has no issues with switching wheels as this has been done before and one of the wheels I have on now is an ebay new replacement. There has been no issue with our 61 reg C3, never had new tyres on the 16 reg C3, or the 19 reg one. I know the systems work as I have had several alarms, which have been due to very slow pressure losses. I wonder how quickly the system would react to a rapid deflation. |
||||
|
|
|
||||
|
routemaster1
|
|
||||
|
Member No: #574
Joined: Jul 08 2007Location: Dorset |
neilp wrote ... I'm not sure about the technical method used on my 2016 DS4 but I do know (as I've had two punctures in a rear) that the system flags low pressure. After a repair, the first time then a replacement the second time (about a year later) the system resets itself. There is no option reset it via the 7" touch screen. Does your system tell you which tyre is low pressure? The ABS system doesn't, just that there is a low pressure tyre. |
||||
|
|
|
||||
|
|||||
|
neilp
|
|
||||
|
Member No: #3384
Joined: Apr 21 2008Location: Bulwell, Nottingham |
routemaster1 wrote ... neilp wrote ... I'm not sure about the technical method used on my 2016 DS4 but I do know (as I've had two punctures in a rear) that the system flags low pressure. After a repair, the first time then a replacement the second time (about a year later) the system resets itself. There is no option reset it via the 7" touch screen. Does your system tell you which tyre is low pressure? The ABS system doesn't, just that there is a low pressure tyre. I'm fairly certain it points to one particular wheel with a graphic showing the plan view of the car with the wheels in the 4 corners. (it's over a year ago now, so I'm not sure) I checked the manual and this is how it's described.  
|
||||
|
|
|
||||
|
|||||
|
Keith
|
|
||||
 Member No: #25323
Joined: Apr 21 2012Location: Headcorn, Kent |
Mine is the same as neilp. I have a 2016 DS4 which has TPM valves fitted to each wheel. When I had a slow punture it indicated which wheel was at fault. | ||||
|
|
|
||||
|
vexorg
|
|
||||
 Member No: #48843
Joined: Jul 06 2017Location: Scotland |
BigJohnD wrote ... Generally speaking, new tyres go on the rear, irrespective of the TPMS or which axle propels the car. In my experience, tyre fitters do this without question. YouTube has several vids showing why. As a general rule, I dont agree with that for front wheel drive. Tyres go where needed. I know of the lift off oversteer concern that "experts" have, but understeer in the wet is a far bigger concern for front wheel drive cars. |
||||
|
|
|
||||
|
BigJohnD
|
|
||||
|
Member No: #82
Joined: Jan 22 2007Location: Hoylake |
You're going against the advice from the AA and tyre manufacturers. Understeer can be controlling by lifting off - oversteer is far harder to control, especially for front wheel drive. |
||||
|
|
|
||||
|
|||||
|
verycleverman
|
|
||||
 Member No: #46275
Joined: Sep 21 2016Location: Morpeth, Northumberland |
Some observations on various posts in this thread based on my ownership of various C5s and C6s: 1/ The early TPMS valve stems were a real issue as they were made of magnesium alloy and were particularly vulnerable to electrolytic corrosion when metal valve caps were fitted. They would also cause problems with the approved plastic valve caps as the salt from the road would cause corrosion. most attempts to remove the caps would result in the stem shearing. 2/ There were two types of sensor fitted as standard, Schrader and Siemens, though I don't recall which was which. The earlier make would only flag up a problem but not which wheel was affected and the wheels had to be fitted in their original position. The later make, post 2004, would indicate which wheel was affected and the wheels could be fitted in any position. 3/ When I had new tyres fitted at Costco, back in the '90s, they would only fit new tyres to the rear. I was told that if I wanted them on the front, I would have to swap them round myself, after I had left the premises. They insisted that putting them on the front contravened Construction and Use regulations and could invalidate my insurance. Pete |
||||
|
|
|
||||
|
FrankBullitt
|
|
||||
|
Member No: #19238
Joined: Apr 12 2011Location: Cambridgeshire |
vexorg wrote ... BigJohnD wrote ... Generally speaking, new tyres go on the rear, irrespective of the TPMS or which axle propels the car. In my experience, tyre fitters do this without question. YouTube has several vids showing why. As a general rule, I dont agree with that for front wheel drive. Tyres go where needed. I know of the lift off oversteer concern that "experts" have, but understeer in the wet is a far bigger concern for front wheel drive cars. It isn’t really The natural inclination for 90% of the population if they suddenly feel they’ve overdone it is to lift of the throttle, this will tuck the front in on FWD car with better tyres on the back, better tyres on the front will create lift-off oversteer (not oversteer as such) which that 90% of people will see them as a passenger straight on the way to the scene of the accident. New tyres on the back of a FWD car. neilp wrote ... I'm not sure about the technical method used on my 2016 DS4 but I do know (as I've had two punctures in a rear) that the system flags low pressure. After a repair, the first time then a replacement the second time (about a year later) the system resets itself. There is no option reset it via the 7" touch screen. We might not have done it on ours either - I thought I had but could be wrong |
||||
|
|
|
||||
|
vexorg
|
|
||||
|
Member No: #48843
Joined: Jul 06 2017Location: Scotland |
FrankBullitt wrote ... New tyres on the back of a FWD car. Well the chance of getting the backend to step out on a fwd car in very slim. I've never had it in the dry, and in the wet, a few times, but my doing for misbehaving and pushing the cars way more than I should on a corner (still kept it on the road  ).From my experience, it takes silly driving, and uncomfortable corning speeds before the back end lets go, whereas doesn't take much to make the front misbehave, even in the dry. I also dont let tyres go below 3mm. So unless you like bald tyres or drive like a loon, the back end wont step out. |
||||
|
|
|
||||
Go to page >>
|
|
 User Colour Key:Head Administrator, Administrator, Forum Moderator, Forum Moderator, Premier Member, Technical Expert, New C4 and DS4 Forum Moderators, Member |
|
Site Disclaimer | Privacy Policy | Cookie Policy |Contact Details | Car Warranty | Sitemap | RSS Feeds | C4 Insurance | Tutorials | Quick Facts | Used Car Guide | Re Call Info | Offers | Service Reviews | Technical Documents | Error Codes
Theme by e107wORks© 
With Graphics from: Dave Forum Icons by Axialis Emotes by Seb
