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High System Voltage And Modules

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Keith Browning
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Keith Browning

Keith Browning

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I have observed this behavior over the years - a newer vehicle say 2008 and up with charging system concerns and excessively high voltage that causes modules to shut down. I am sure others have seen this too. The voltage on  my current victim is just shy of 18 volts. I lose the cluster, SAT radio, and power seats along with about 20 codes in total... mostly network and system voltage related.

 

It's funny how I have never seen this documented anywhere or am I missing it?

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amailloux

amailloux

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I had 1 yesterday at 17.7 volts and lost the cluster only.  Was an 08 F350.  Had a bunch of high voltage codes and loss of comm with the cluster.  It was a base model so none of the fancy modules on the bus.

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