Acura 2010 ZDX Owner's Manual page 478

Starting the Engine (Models without Keyless Access System)
The engine is harder to start in cold
weather. Also, the thinner air found at
altitudes above 8,000 feet (2,400
meters) adds to this problem.
474
Check Starting System Message
If there is a problem with the starting
system, you will see a ''CHECK
STARTING SYSTEM'' message on
the multi-information display when
the ignition switch is turned to the
ON (II) position. You will also see
this message when the auto control
mode of the starting system has a
problem.
2010 ZDX
If this message is on, the ignition
switch has to be held in the START
(III) position manually until the
engine starts. The ignition switch can
be held in that position up to 15
seconds.
Even though you may be able to start
the engine manually without the auto
control mode of the starting system,
have your dealer inspect your
vehicle.