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asj968
Member Since: 01 Jul 2008
Location: Kent
Posts: 74
  
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| Fuel Guage Dropping Rapidly |
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Before I start I realise that there have been other posts on this subject however ….
My fuel guage drops rapidly when out on a journey. Switching off and switching back on again resets it to the correct level.
I have had all the connectors replaced at the tank and when that didn’t resolve the issue, I had new senders installed - so I am at £1200 with no fix yet.
The only other information I can provide is:
It would appear that it only goes down rapidly while moving. I have sat in it stationary this morning for 30 mins with the engine running and it hasn’t moved.
Also when driving I get a park brake fault come on which I thought might be the trigger but it seems that the level drops rapidly before the park brake fault comes on.
It’s a mystery to me so any thoughts gratefully accepted. Porsche 968 Cabrio
Discovery 4 HSE 3.0
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 16th Jun 2023 9:16 am |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10502
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Sorry to hear this.
Your profile shows no Discos, but two Discos are listed in your signature. Is the problem with the Discovery 3 HSE 2.7 or the Discovery 4 HSE 3.0 ?
Good luck
NJSS
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| 16th Jun 2023 9:49 am |
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asj968
Member Since: 01 Jul 2008
Location: Kent
Posts: 74
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Apologies - will look at that
I now only own the D4 Porsche 968 Cabrio
Discovery 4 HSE 3.0
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| 16th Jun 2023 10:20 am |
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asj968
Member Since: 01 Jul 2008
Location: Kent
Posts: 74
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In the interest of closing this off, I tried to get it in at the dealership for diagnosis but there is a 7 week wait for an appointment. I spoke with a local specialist who said he could only point to a potential software issue given I had already had work done that he would do.
He gave me the number of a mobile technician who came to the house. He reset the parking brake module, also did a software update for the canbus. After doing a few resets and rebuilds in the software the park brake fault and fuel guage issue seem to have gone away.
Fingers crossed 🤞 Porsche 968 Cabrio
Discovery 4 HSE 3.0
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| 11th Jul 2023 2:05 pm |
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Oswiperus
D3 Decade
Member Since: 02 Apr 2010
Location: Chelmsford, Essex
Posts: 1590
 
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A good result....In the end.
Thanks for posting the result, lets hope it's a permanent fix.  Stu
2016 D4 Landmark current
2022 Defender D300 SE Gone 
D4 2014 XS Commercial - Gone
D4 2016 hse lux montalcino red - Gone
D3 2005 se java black - current
D3 2005 base manual - gone
D2 1999 TD5 E white - current
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| 11th Jul 2023 2:11 pm |
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Maddox1965
Member Since: 11 May 2021
Location: Kongsvinger
Posts: 2
 
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Hi,
I had this problem after I removed the parking brake module. First constant no fuel light. Engine stop of course. I put the module back with the connector in place. On first trip the fuel gauge dropped in a hurry. And EPB warning light was on. I put everything together , adjusted the EPB and everything was fine.
If this was fixed with reset maybe the EPB is at the limit of adjustment?
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| 13th Feb 2024 10:14 am |
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Landylad
Member Since: 23 Dec 2008
Location: Aberdeenshire
Posts: 366
 
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Had similar problems with my fuel gauge when d*cking about with the EPB. Not sure how these two are linked, but they must have some interface. Just typical LR to be honest. If in doot, flat oot!!
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| 25th Feb 2024 11:18 am |
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