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Tyre pressure warning
#1
We've had a few comments about features that Citroën have cut from the Berlingo in the name of economy or profit, but my December 2014 Berlingo has one very useful feature which I've only just discovered. I switched on the ignition yesterday and got a 'ping' warning. There was a message saying my tyre pressures were too low. I had no idea as I admit to having been lax in checking my tyre pressures. Three of the four needed inflating considerably. Yes, I should have known but didn't. So a useful, clever feature I didn't even know my car had. I've no idea how it works - I'm sure forum members will soon tell me. The handbook rightly says the device is no substitute for regularly checking tyre pressures. True. So, thanks Citroën. I promise to keep an eye on the pressures in future.
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#2
Each valve has a little electronic unit that sends a signal to the monitoring computer.
It is law now that all new cars have it, so the price of replacement valves has already started to tumble.
Government introduced this legislation to reduce emissions, as apparently low tyre pressures contribute significantly to this.
[-] The following 1 user says Thank You to Lighty for this post:
  • tezzerh
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#3
Check the valve body to the alloy with some soapy water, I've had two so far that were slowly leaking. The Tyre Pressure Monitor is about the size of a matchbox sitting inside the well of the wheel and the nipple is part of it, sealed by an O ring, therefore the valve body can't be pulled out like a conventional one.

If you have any tyre work done make sure they are aware of the TMPs as they can easily be destroyed if they don't take care, new ones are expensive and need to be matched to the car computer.
[-] The following 1 user says Thank You to Solent for this post:
  • tezzerh
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#4
(08-09-2015, 06:08 AM)Lighty Wrote:  Each valve has a little electronic unit that sends a signal to the monitoring computer.
It is law now that all new cars have it, so the price of replacement valves has already started to tumble.
Government introduced this legislation to reduce emissions, as apparently low tyre pressures contribute significantly to this.

So would my 63 plate berlingo have them fitted to the original steel wheels ???
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#5
(08-09-2015, 08:07 AM)doofer Wrote:  I'd like to know what pressure they actually go off at?  Do you know what it was when it went off?

I'm in Holland at the moment, so can't give psi figures. The worst reading on the garage air pump meter was 1.8 and the others 2.1. Pretty low, I think.
[-] The following 1 user says Thank You to tezzerh for this post:
  • doofer
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#6
To save me typing out the whole lot, here is an article I googled, basically anything sold car wise from nov 2014 has to have tpms, hence why my Dacia duster has it as standard Smile
http://www.techeurope.co.uk/tech/news/vi...S-imminent
[-] The following 1 user says Thank You to Lighty for this post:
  • tezzerh
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#7
There is a different way of TPMS , it works through the ABS sensors and compares the wheel rotation , the idea is if a tyre is slightly flat/underinflated the difference number of rotations between the wheels trigger the warning.  ( I think its called non direct TPMS  ? )

It can take a lot of miles before it decides to show an alarm.  

Skoda and presumably VW/Audi  uses this system and does not have sensors in the wheels.
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#8
(08-09-2015, 06:08 AM)Lighty Wrote:  Each valve has a little electronic unit that sends a signal to the monitoring computer.
It is law now that all new cars have it, so the price of replacement valves has already started to tumble.
Government introduced this legislation to reduce emissions, as apparently low tyre pressures contribute significantly to this.

More like "The Government Minister" or "European Minister" who introduced legislation for TPMS now required by law "Owns the firm" that manufactures them eh !
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#9
YOU cynic it's all for safety not capital gain they wouldn't think of such a thing  Dodgy would they  Wink
                                     Smile  It's too orangey for crow's It's just for me and my dog  Smile

                                                        Heart Heart Love a lot trust a few  Dodgy
 
                                                        

                                        
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#10
To improve fuel efficiency mostly I think.
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