VTech Go! Go! Smart Wheels Checkered Flag Motorized Track Set Instruction Manual page 6

If there are no locks inside the package, disregard this message.
Removing the Packaging Locks:
Turn the packaging locks anticlockwise
several times.
Pull out the packaging locks and discard.
INSTRUCTIONS
Battery Removal And Installation -- Vehicle
1. Make sure the unit is turned OFF.
2. Find the battery cover located on the bottom of the Race Cars,
use a screwdriver to loosen the screw and then open the battery
cover.
3. Remove old batteries by pulling up
on one end of each battery.
4. Install 2 new AA (AM-3/LR6)
batteries following the diagram
inside the battery box. (For best
performance, alkaline batteries or
fully charged Ni-MH rechargeable
batteries are recommended).
5. Replace the battery cover and
tighten the screw to secure.
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