Hey folks.. we have around 20 e60z's that are all coming up on 10,000 hours and code 51 seems to coming up.
most offen after a battary change.
One guy in the shop thinks its the PTC ( i call it the red advile on the line contactor ) he has had luck cooling them with safeclean and the truck starts again.
The other guy has had luck changing the line contactor.
I think the PTC is failing becasue of the line contactor failing.
Is this a problem any one else has come across?
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