AndyPembs
Member Since: 03 Aug 2022
Location: Wokingham
Posts: 69
  
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| "Check battery and fuel" error |
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This morning was a bit chilly... Turned on the ignition in my D4 and got an error message which read something like "Check battery and fuel level" - all in connection with the FBH.
Plenty of fuel, and no problem with the battery.
Thoughts, anyone?
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 6th Dec 2022 10:01 pm |
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grzesiul
Member Since: 11 May 2008
Location: UK
Posts: 6266
 
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why do you think no problem with battery?
it might have degraded that its state of capacity is crap although it might show OK voltage ...
can you read DTCs?
G
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| 7th Dec 2022 10:39 am |
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AndyPembs
Member Since: 03 Aug 2022
Location: Wokingham
Posts: 69
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It's reading 12.6......
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| 7th Dec 2022 9:42 pm |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12697
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My FBH doesn't like volts below 12.4 -
I changed battery earlier this year to prevent this being an issue this winter, but it hasn't improved the situation. .
Dean
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2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer  ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
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| 7th Dec 2022 10:01 pm |
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Flatlander
Member Since: 20 Jul 2015
Location: Here
Posts: 575
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I've seen quite a few FBH with low voltage errors due to either a corroded fuse or high resistance in the wiring, the first one can sometimes be only cured with a new fuse temporarily if the contacts in the BJB are corroded also. A first time fix is to run a new supply from the battery terminal via a 10A in line fuse directly to the FBH connector.
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| 7th Dec 2022 11:03 pm |
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