Home > Technical (L322) > FBH odd behaviour |
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ebajema Member Since: 24 Mar 2011 Location: New Plymouth Posts: 4782 |
I'd suggest to ask them to check all service bulletins related to this model year / VIN. I remember battery upgrades and battery management software upgrades.
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29th Mar 2016 2:07pm |
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comports Member Since: 20 Dec 2010 Location: Colchester Posts: 1698 |
I think it is a bit harsh to say it is not "permissible" to listen to the radio with the engine off BUT we do know that they do have very "fragile" batteries to be honest. Example - leave the doors open for any length of time while cleaning the car, perhaps using a plug in car vac will certainly flatten the battery.
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29th Mar 2016 6:34pm |
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comports Member Since: 20 Dec 2010 Location: Colchester Posts: 1698 |
You should not compare the RR with the other vehicles. Rightly or wrongly there is a HUGE amount of electronic gadgetry going on in the full fat (air suspension height sensors, tyre pressure monitors etc etc all of which take a big chunk of battery) all constantly monitoring what is going on.
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29th Mar 2016 6:38pm |
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wealy Member Since: 29 Jul 2013 Location: Kings Bromley Posts: 1020 |
Your symptoms are common
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30th Mar 2016 6:51am |
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gbmud Member Since: 19 Feb 2016 Location: Sussex Posts: 19 |
My problem is the FBH remaining on (starting unbidden?) with the doors locked, even at 16 degrees the other day! I cannot think this is doing anything for battery life!
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30th Mar 2016 7:00am |
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wealy Member Since: 29 Jul 2013 Location: Kings Bromley Posts: 1020 |
Fbh should not operate at 16 degrees?
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30th Mar 2016 7:03am |
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gbmud Member Since: 19 Feb 2016 Location: Sussex Posts: 19 |
Thanks, I'll do it tomorrow.
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30th Mar 2016 9:29am |
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CS Member Since: 14 Apr 2015 Location: Edinburgh Posts: 1376 |
My guess is that your battery is near the end of its life and is struggling. As noted above the need for the whole system to fire up before the radio will work or the FBH will run is part of the problem. I suspect it cuts off when it reaches a certain level. There are stories on here about people watching TV on ferries/ch tunnel and then having to be pushed off at the other end because doing so has drained the battery so much that it could no longer start the car...
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30th Mar 2016 11:22am |
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gbmud Member Since: 19 Feb 2016 Location: Sussex Posts: 19 |
Thanks. I believe that my use should not require any additional charging - based on anecdotal evidence from other RangeRover drivers. I will be able to re-evaluate once I get confirmation that the battery and charging system are both good and the ventilation fans/FBH have stopped randomly running when the car is left unattended...
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30th Mar 2016 2:25pm |
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gbmud Member Since: 19 Feb 2016 Location: Sussex Posts: 19 |
Well, the car went in to the dealer yesterday to be looked at. I felt that they had pre-diagnosed the problem as being a low battery so they charged the battery and it passed their test as bing 'good'. There are apparently no fault codes relating to the FBH so as far as they are concerned there is no fault - they must assume that I am making up the symptoms I have been getting.
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1st Apr 2016 7:53am |
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