Transmission fault/HDC fault

Two very different problems. Mine always occurred on startup. Seems yours are while in motion. Very similar warnings though. Good luck, hope yours is fixed now.

Quote:

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Originally Posted by Mike_S

The other main culprit for this message is a dying battery. It'll still start the car but the voltage is isn't great, so it chucks up these faults. New battery and all is well again.

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Thanks Mike,

I was getting the same fault message "HDC not available" after starting overnight. The message would not show after susequent starts during the day.

Lashed out on a new battery and no faults after a cold start.

Over 4 weeks now with no faults being reported.