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Home > General > rear window demister |
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Paddi Member Since: 06 Jul 2012 Location: Hertfordshire Posts: 1563 |
Yes. If the battery state of charge is low then the car can disable high current components including the screen heater. Usually after a few minutes running the disabled systems are turned back on so you can try either charging the battery or just running the engine for a while and then check for voltage using a multimeter on the heating filaments. 2008 MY Java Black TDV8 HSE
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Wed Dec 21 2016 4:24pm |
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Andy K Member Since: 18 Sep 2015 Location: GL Posts: 4966 |
or rev the engine above idle |
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Wed Dec 21 2016 5:22pm |
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leebee Member Since: 22 Sep 2016 Location: leeds Posts: 2 |
Thanks for the reply.the battery is at 12v ignition off and charging at 14v or just over.could it be a weak battery? |
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Wed Dec 21 2016 5:36pm |
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