Toy Dashboard Can Anyone Tell Me How You Get Into The Battery Compartment Of The Siren On The Step 2 Fire Engine Ride For 2?

Can anyone tell me how you get into the battery compartment of the siren on the step 2 fire engine ride for 2? - toy dashboard

It is a continuous 2 riding toys, I have it second hand. There seems little light in a gray box in the top center of the plate. Write-ups on the product says it is a siren and light combo, but I can not understand how open to change the batteries. This is a ride on toys for children.