2024 MERCEDES-BENZ GLE 450 E

2024 GLE450: This engine has twin turbos. On second day of ownership a "yellow turtle" warning light appeared on dash. This indicated loss of significant engine power (i.e. hence the "turtle mode"). This happened, without warning, multiple times on highway during first few days of ownership. I think this means the turbochargers were "deactivated" or taken "off line" by vehicle's management system. Result was suddenly compromised ability while passing and ability to maintain highway speed to