My wife and I saw this once. Looked it up in the user manual and it seemed to apply to to features that we do not have on our car.
Wrote it down on my list of things to mention to the dealer the next time I have it in - if it repeats, I'll make a trip just for it (hopefully while it is still up on the screen).
30. Chassis control warning
This warning appears if Active Lane Control
(if so equipped), the active trace control
system and/or chassis control are not
functioning properly. Have the system
checked by an INFINITI retailer. (See “Active
Lane Control” (P.5-24), “Active trace control”
(P.5-110) and “Chassis control” (P.5112).)
ACTIVE TRACE CONTROL
This system senses driving based on the
driver’s steering and acceleration/braking
patterns, and controls brake pressure at
individual wheels and hybrid system output
to help smooth vehicle response.
When the SPORT mode is selected by the
INFINITI Drive Mode Selector, the amount of
brake control provided by the active trace
control is reduced.
When the PERSONAL mode is selected, the
active trace control can be set to ON
(enabled) or OFF (disabled). See “INFINITI
Drive Mode Selector” (P.5-21).
When the VDC OFF switch is used to turn off
the VDC system, the active trace control is
also turned off.
The chassis control is electric control
module, including the following function:
. Log-in function (See “Log-in function”
(P.3-14).)
. INFINITI Drive Mode Selector (See
“INFINITI Drive Mode Selector” (P.521).)
. Active Lane Control (if so equipped)
(See “Active Lane Control” (P.5-24).)
. Active Trace Control (See “Active trace
control” (P.5-110).)