psd7.3

I hope I'm not too late to comment on this, but I have the same issue only when I hit the default horn/siren button, I get only the horn. Cannot get a siren to stay on. Also, all the lights are very very dim and do not work properly. Please advise.. thanks!!

i dont speak german but i am getting the same exact message and have literally been trying to fix this for 48 hours almost non stop. i have uninstalled and re-installed gta v 4 times (almost 3 hours each time), played with every possible setting in rage, scripthook, etc. please advise. im about 5 seconds from lighting my computer on fire and throwing it out the window thanks!!