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tom1979
Member Since: 19 Jan 2016
Location: East Anglia
Posts: 24
  
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| Disco 4 Spare Wheel Pressure Sensor |
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Had a spare tyre pressure warning for a couple of months - comes up with a warning which normally disappears , finally got around to inflating it to find it was about 30psi (not that low). Inflated to about 40psi (to be sure) - warning still comes up and then goes away. Anyone else had a similar thing?
Disco 4 Commercial 2014
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 19th Jan 2016 11:23 am |
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Brian_DL13
Member Since: 25 Aug 2013
Location: Teesdale
Posts: 1418
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Yeah.
I believe the system expects the spare's pressure to be higher than those on the road. I inflated mine to about 50 psi and the warning went away.
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| 19th Jan 2016 11:26 am |
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tom1979
Member Since: 19 Jan 2016
Location: East Anglia
Posts: 24
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Thanks Brian.
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| 19th Jan 2016 11:28 am |
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L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2080
 
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I wonder if the spare sensor is expecting to see max load rear (46psi) pressure so its available for any wheel with any load.
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| 19th Jan 2016 11:29 am |
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tom1979
Member Since: 19 Jan 2016
Location: East Anglia
Posts: 24
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Possibly.. I also wondered if the battery in the sender was on it's way out but would expect a different warning if any
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| 19th Jan 2016 11:30 am |
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CUCO
Member Since: 27 May 2011
Location: Spain & Oleee!!!
Posts: 609
 
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Can them be changed?
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| 20th Jan 2016 1:51 am |
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Hairy Dan
Member Since: 19 Jan 2011
Location: Co. Durham
Posts: 12319
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My spare is inflated to the same pressure as the other tyres and I don't get a warning  Cheers Ian
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Club N.E.R.D.S
Kielder 4x4 Safari
Discoless
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| 20th Jan 2016 1:05 pm |
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EMcC
Member Since: 10 Jul 2015
Location: Wiltshire
Posts: 536
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I have suddenly started to get the same warning about my spare wheel tyre.
I was wondering if it could be due to the cold weather setting in ? as when I check all my tyres they all show as slightly underinflated.
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| 8th Dec 2016 9:03 pm |
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tom1979
Member Since: 19 Jan 2016
Location: East Anglia
Posts: 24
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In the end I pumped mine up well beyond what is recommended and then deflated to the correct pressure, I have not had the warning since. I wonder if it wasn't sealed properly. I've had a similar thing with defender wheels before.
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| 8th Dec 2016 9:11 pm |
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ratrunner
Member Since: 20 Nov 2015
Location: cotswolds
Posts: 194
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I am sure you all know of course that there is a delay of up to 8 mins before the tyre pressure unit registers the message to the monitor.Well it did with mine 
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| 11th Jan 2017 6:28 pm |
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den2013
Member Since: 03 Jan 2013
Location: Alland
Posts: 622
 
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^^ I found that when pumping them up leave the ign on with the tyre pressures showing, pump up to what it should be but put a few extra psi in, depending if you are doing them all go around each one, by the time you are done with all 4 the readings will start to change, if only doing the one, follow the same principle but put the gauge down walk around the car 20 times, do 20 press ups and then have a ciggy, the the reading will change.
For gods sake don't sit in the car and wait watching the to see if it will change...... IT WONT all the time you are watching.  2015 D4 HSE LUX Kaikoura Stone(sold)
2010 D4 S Commercial Santorini Black(SWMBO)(sold)
2014 Evoque Dynamic Kaikoura Stone (sold)
2013 Porsche Boxster S (Fun car)
2008 D3 HSE Java Black(sold)
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| 11th Jan 2017 8:07 pm |
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Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1521
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I started getting a warning immediately after I inflated my tyres to high load pressure. So I assume the warning must be actuated by a comparison to the other tyres, either that or it was a coincidence. I then set the pressures back to normal but the warning still came up. When I checked the spare it was fairly low, around 32 I seem to remember. Inflated to over 40 and the error went away.
Incidentally I left the warning to see if my dealer pointed it out to me ( or better, fixed it) when it went in for them to put right something they had previously done on the car. They didn't even mention it. That was the last straw for me. Off to another dealer from now on. Gary
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Discovery 4 HSE 2016MY
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| 11th Jan 2017 10:54 pm |
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Navigator
Member Since: 17 Mar 2010
Location: Stay at Home. One of the lives you save could be your own.
Posts: 5103
 
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Ooooh! Never thought of there being a sender on the spare! Better have a look when the better weather sets in. A vaccine does not stop you catching a virus, or passing it on, or getting ill from it, really ill. It does reduce the likelyhood of you dying when really, really ill. Stay Alive - KEEP AWAY FROM PEOPLE.
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| 12th Jan 2017 12:21 am |
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