RED triangle with no CEL after Hybrid Fan Replacement

A buddy of mine just called and asked me to help him with an issue on his 2007 Gen 2. He had his HV battery replaced 2 years ago and all has been fine. Recently though, the RED triangle came on with NO symptoms and he took it into a shop where they diagnosed the car and told him the HV Battery fan was faulty and needed replacement, they did so and RED light did not go off, they then inspected further and said it was the blue fan relay and after replacing it they told him that was the issue and the RED triangle still remained on. They told him that he had a CHECK HYBRID SYSTEM issue and had to take it back where his battery was installed and they didnt help him further.

He states there is NO CEL or any other lights and just the red triangle and car runs/drives fine as well as battery shows normal operating conditions.

Any suggestions, what I can have him check or help him look at?

 

I totally agree which he did at Autozone but their scanner is basic and showed NO codes present. I was trying to give him DIY checks before he makes the drive to me to use my T10 scanner which should retrieve hybrid codes the Autozone scanners may not.

 

I had him check and he said oil level was near full and all other fluids topped off.

 

I had him check and oil was near full and all fluids topped off.