My dashboard lighting up like a Christmas tree. Warning lights galore. Brake light, engine malfunction and electric steering wheel. They all flash at once and then they do this disco light show and then the system goes dar, with the engine malfunction light on.

Is this an electric system issue? Does it need resenting from some satellite?

Is it break calipers?I was told they needed replacing at some point.

I have 136,000 miles on my car. What am I missing?Triple A on the way.

 

Towing to dealer, that's what you are missing. As it's a hybrid, 12V and traction battery lights are different. I'd presume, it's brake system related (not sure what steering has to do with this) and needs to be diagnosed with Techstream scanner. Do NOT take it to a regular shop as they will bust your car. hybrids are finicky. Either dealer or known hybrid specialized repair shop.
Please, report back and let us know what happened. First time I hear about that lights array.

 

I suspect that the battery is possibly in a semi discharged state. Generally, when the voltage in the 12 Volt battery drops below a certain point, most of the electronic functionality starts going haywire.

I suggest getting the battery checked, and/or charged with a smart charger. The RX450h's battery is an AGM battery, quite different to a traditional flooded wet cell cranking battery, which the RX350 uses.

 

you just need a new 12v battery

 

I don't think resenting it will help.

I don't think there's anything to "reset from satellite" either.

 

Please note that this is an AGM battery, not a regular flooded cell lead acid battery.

More details here: https://www.clublexus.com/forums/hyb...us-rx450h.html

 

Well, it's absorbing glass mat battery AND deep cycle battery.
That's not the point. When 12V goes bad, usually, it's VSC/ABS/Check Hybrid system lights. He has Brake/ Check Engine/Steering wheel light. I have never heard of THAT particular combination for 12V.
Of course, OP bailed and now we are left to guess.