lloydey64
Member Since: 30 Sep 2018
Location: worcester
Posts: 11
  
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Recently noticed that the front screen heater is only staying on for a couple of minutes whereas the rear one remains on a lot longer. Any suggestions as to what needs checking etc 
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 4th Dec 2018 6:22 pm |
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Batfink
Member Since: 31 May 2017
Location: Isle of Sheppey
Posts: 1510
 
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The heated screen generally runs for a shorter time than the rear. Mine does and also had many previous Fords that do the same. 2006 TdV6 HSE.
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| 4th Dec 2018 6:31 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10360
 
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generally they only need to run for 4 minutes.
I'm sure mine runs a little longer though
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| 4th Dec 2018 7:51 pm |
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lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
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I normally push the top of the three buttons which switches on all three functions at once and am pretty sure the heated screen stays on for longer than 4 minutes activated this way.
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| 4th Dec 2018 8:20 pm |
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L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2080
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My D3 stays on longer than 4 mins., more like 10 to 15 mins. before switching off.
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| 4th Dec 2018 11:51 pm |
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lloydey64
Member Since: 30 Sep 2018
Location: worcester
Posts: 11
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At the moment mine stays on for just two minutes before switching off. Does anyone have any suggestions what I should be checking etc
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| 5th Dec 2018 5:09 pm |
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M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8072
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There is a comparison between D3 and D4 here! - the D4 probably stays on less because it comes on automatically when outside temp is below 5c on start up 
Heated screens use a lot of current so the less time they are on the better for the battery. It can when others can't,
It will when others won't,
It goes where others don't.
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| 5th Dec 2018 5:47 pm |
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hugeviking
Member Since: 08 Jun 2010
Location: cotswolds
Posts: 1482
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If the battery is getting low, maybe the car turns off some electrical functions to help it charge, is the battery in good condition.
Andi.
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| 5th Dec 2018 6:12 pm |
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L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2080
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There is a load shedding function if the alternator cannot supply enough current or the battery is low and needs a good charge . Having said that it needs lot of load such as all the lights ,seats front & rear etc ,to load the alt. to max.
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| 5th Dec 2018 6:35 pm |
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BBDisco3
Member Since: 23 Nov 2008
Location: Cheshire
Posts: 3640
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Just done a check on my D4.
After turning both on:-
Front screen turned off after 2 minutes.
Rear screen turned off after 4 minutes.
Both give or take a few seconds
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| 5th Dec 2018 6:56 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10360
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L319 wrote:There is a load shedding function if the alternator cannot supply enough current or the battery is low and needs a good charge . Having said that it needs lot of load such as all the lights ,seats front & rear etc ,to load the alt. to max.
Yes, even the D3 does this. For screens and heated seats.
However when this operates, the dash light stays on, and it turns the heater off without you knowing
It is cleaver enough to remember to stop the count down timer when it has turned it off, so you still get the full heating time.
Therefore : Those reporting very long on times, it could be because you have lots of other things turned on, or battery is low. or engine is on idle.
Ref D4 - 4 mins for a rear screen is a massive step change
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| 5th Dec 2018 9:15 pm |
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