Was TPMS an option on early California 2009-2012?

Yes it was an option on the early Californias. I didn't have it on my '09 but added it to my '11 model.

 

I don't know the answer to that one I'm afraid. I recall the system on my '11 model year being a bit flakey and not particularly reliable.

 

I have it on my '11. It shows both temp and pressure.

Do you get a TPMS warning? When one of my sensors went out a year or so ago, the tire temp/pressure page did not appear on the TFT display, but there was a TPMS warning.

T

 

AFAIK TPMS was standard in 2010.
As mentioned above, the page does not display if there is an issue with the system.

 

I found a copy of the UK price list from January 2011. TPMS was an option and not standard fit equipment. It's listed in the Equipment and Travelling section as option TPMO.

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Probably depends on where you live.
It was law in the US and Canada for MY 2008 and onward, so of course it was standard equipment there.
TPMS did not become mandatory in the UK until around 2014 (my quick google search didn't say if it was in 2014 or by model year).

 

I did not find it on mine also, took the Cali for an airbag recall and it turns out it was an option, I was stumped honestly, I thought it was a legal requirement in certain countries and assumed they would have standardized it across the range but no it was an added option at the time.