Oil light not turning off and the fuel gauge does not move

2003 JAGUAR S-TYPE
67,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
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AUSTINO
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Good evening guys. The oil light on my car is not coming off and the gas gauge is not moving . Can you tell me what can cause this problem? Thank you for a speedy response.
May 29, 2021 at 4:08 PM
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JACOBANDNICKOLAS
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Hi,

The rear electronic control module is tied to the instrument cluster, fuel gauge, and oil pressure light via what is called a CAN bus. CAN stands for controller area network. I would recommend checking the wiring at that module as well as at the instrument panel for a location where the two wires (blue and yellow) have crossed or a connector has failed. It seems (and this is a theory) power from the fuel gauge is being sent to the oil light and not the gauge.

If you look at the pics below, I included the wiring schematic related to this issue. I highlighted the wires I recommend checking. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-wiring

Also, I strongly recommend having the CAN bus system scanned. As mentioned, the can is a network that ties all modules together via a few wires. If there is a fault in the module, it should be indicated via a diagnostic trouble code.

Here is a quick video showing how it's done:

https://youtu.be/InIlnsjOVFA

Let me know what you find or if you have other questions.

Joe

See pics below.

May 29, 2021 at 11:01 PM
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AUSTINO
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Good morning, thank you Joe. I will check and let you know what I find.
May 30, 2021 at 3:31 AM
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JACOBANDNICKOLAS
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Hi,

You are very welcome. If you have the chance, let me know what you find or if you have other questions.

Take care,

Joe
May 30, 2021 at 5:59 PM
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AUSTINO
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Good morning Joe. yes, I have a question. I am asking you kindly if you can please show me a simpler diagram to locate the wires. I don't know where the instrument cluster is. Please help me. Thank you
May 31, 2021 at 4:37 AM
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JACOBANDNICKOLAS
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Hi,

The instrument cluster is on the dash. The wiring shown is behind the cluster. The connector to the cluster is what is shown.

As far as a different schematic, this is all I have. I'm sorry about that.

Let me know if you can find the cluster wiring.

Joe
May 31, 2021 at 8:30 PM
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AUSTINO
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okay, thank you.
Jun 1, 2021 at 1:38 PM
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JACOBANDNICKOLAS
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You are welcome. Let me know if there is something I can do to help.

Joe
Jun 1, 2021 at 7:06 PM
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AUSTINO TAMMY
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Good morning,

When I park my car for 25 minutes, the car's transmission starts to leak oil on the front of the crankcase. Can you please tell me what can cause this problem?
Thank you.
Jun 4, 2022 at 8:47 AM
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KASEKENNY
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We can definitely help with this but unfortunately, we need to get a new post started on this because this issue is not the same as listed in the subject line of this post.

https://www.2carpros.com/questions/new

Basically, we need to keep each post to one topic just so that if others have the same issue, they can find it.

More than likely they will not find this specific issue under this post.

Sorry for any inconvenience. Thanks
Jun 4, 2022 at 3:19 PM