Because the other lights are safety lights, not police lights. You ever see a 4C police car? Maybe. Ever see a ZL1 police car? Doubt it. Lol
This comment makes no sense. There is an older British police car and the lights work. Why would one police car’s light work and not the other? Obviously they can work with no problem since they did in H3.
I totally agree, what is the difficulty of looking at an old code and going over to the new schedule
when u get a crown vic look at the lights it gives u and i got the 4c with the blue lights but just never use it i use other police cars
They work in H3. It’s strange if they don’t in H4. It’s really the only reason I wanted the car so that’s unfortunate to say the least. Not exactly a police car if the lights don’t work.
agreed the crown vic i wanted for the police car and lights as its such a good car but the lights dont work sad about it
Based on this I can now stop searching the AH for one - what a relief 
There’s a few more Camaros and Corvettes as police cars than you’d think, usually from drug seizures. I know the RCMP near where I’m at love to speed by me in their Charger and that was paid for by taxes.
And lets not forget Dubai where Camaro is one of those cars that police use. But i think @Clutch63 is may be right abaout that one that Crown vics lights dont work because PG cant use working police lights, lights that are on other cars only have blue color so those counts as safety lights instead of police lights.
I was very disappointed that the lights don’t work after getting my Crown Vic. I assumed it was because I don’t have the siren horn yet.
Is it possible to make these lights work. They are the individual bubble lights not the long horizontal ones. Not sure if it is possible to fit the horizontal ones to this car.
For months we have requested the correction of the siren, in Forza Horizon 3 this works correctly, it will be difficult for the Forza team, look at the source code and compare to correct the problem. When will we have the problem solved, only in the Forza Horizon 5?
The Crown Vic handles like it has banana skins for tyres, so even with working lights it doesn’t really serve a purpose for me.
why do people are so excited about this car ? It’s cheap as hell, drives like crap. I had 2 extra at some point, wanted to delete them, but I remembered people want them so I auctioned them. They sold in 10 sec and I also got messages asking if I have more to sell.
[Mod Edit - Abbreviated profanity, profanity and profanity that is disguised but still alludes to the words are not permitted - D]
the answer is very simple, you can use as a taxi or a police car, in which case I have both. With painting of the taxi of new york that I myself painted and shared, and another with the painting of Police of Brazil of the State of São Paulo.
I want the police siren to work just like the Forza Horizon 3, that’s all I ask for?
Turn’s team stepped on the ball, it was to have solved this
You can select a siren for a car horn.
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I think there is a population of law enforcement enthusiasts that amplify the demand for this car. It is otherwise not very good on most accounts.
How can you turn on and off the cop sirens in forza horizon 4? Is it only available on computer to turn them on and off?.And if you can contact me on xbox. Username is: Moto Madness 05.
You have to choose it as one of the car horns, and then hold down / click the right stick to use it while driving.