Trunk Area Won't Stop Beeping / Car Won't Start

Hey guys, so I came out to my 2020 CX-5 GT this morning and there was a continuous beep coming from the trunk liftgate. The only way I am able to stop it is by disconnecting the battery. I went in and manually opened the liftgate and reconnected the battery and it started beeping again. I'm unable to start the car as well. When I push the start button without my foot on the pedal it will blink amber once and then flash green nine times, if I press the pedal the start button light goes amber. I'm also not fully able to press my brake down. Any help or information would be appreciated.
 
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2017 Mazda CX-5 GT, 2016 Mazda6 iGT, 2014 Mazda3 sGT hatchback
Under warranty? Needing to change battery on a 2020 is rare.
 
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CX5 GT
true but can happen. Mine started dying in the 12-14 months time frame since new. Covid also accelerated the process :)
+3 more months the car was sitting in the dealer lot prior purchase.
 

yrwei52

2016 Mazda CX-5 GT AWD w/Tech Pkg
Contributor
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Plano, Texas, USA
Update: changed battery and all works fine now.
Battery is covered under Mazda’s 3-year / 36,000-mile new car warranty.

Like dunhillmc mentioned above, if your 2020 CX-5 GT was assembled between 9/13/2019 and 3/18/2020, you have a bad Power Liftgate (PLG) Control Unit which can discharge your battery. Check this Special Service Program (SSP) C2 for details:

Mazda CX-5 Special Service Program (SSP) C2