FUUCKKK, friend tried to install subs in bmw, now wont go into drive!!!

[REDWGN]

@love4boost

Doubtful anyone is going to have the solution but fuck I thought id at least try… my friend tried to install some subs and an amp in my car tonight and now the fucking thing says tranny/awd/abs and something else malfunction! Motherfucker wont go into drive either!! Obviously he touched the battery in the trunk but also said he had to take the back seats out for something too… Anyone have any ideas on wtf could be going on here???

ONLY thing im thinking is that the battery died and when its dead on these cars it throws all kinda codes/malfunctions, but I think thats hopeful thinking… Charging it now and will see in a few hours.

Charge the battery and check all the grounds. I had a loose ground in my Cadillac, threw a bunch of codes, anti-theft shit, it was crazy.