Car: 2008 GS450h 51,000 miles UK RHD
The AGM 70Ah 750CCA 12V battery reached the end of its hassle-free life a few days ago; it's given 6+ years so I can't complain.
Replaced it today, but left the car without power 90 mins so lost all the saved locations/destinations, radio channels etc. No big deal.
But also acquired a "CHECK HYBRID SYSTEM" (never seen before) error message on the dash.
I know the hybrid battery was fine; almost never going down to 1 bar and giving the full range of bars right up to the (rare) maximum. Though the display of this is hobbled, the graphical image of the hybrid battery is visible and the bars come and go exactly as I would expect. So I can tell the hybrid system is itself continuing to work fine as it always has.
When I bought the new battery I was warned by the autocentre this might happen, and just had to do a lot of "hard driving" and the nuisance display would go away. They (correctly) said my BlueDriver OBD2 plug-in would not be able to clear this mesaage.
Could someone advise me how long it might take for the GS450h to figure out all's well and for the nag to stop?
Thanks!

 

UPDATE.
It never did fix itself
I bought a cheap Techstream OBD2 system off Aliexpress and cleared the error code myself. Since then, no more issues.