Has anyone else solved the problem of the horn not working and headlights when you use the remote to lock your car?

I put the lock button, the doors lock, but the lights do not flash and the horn doesn't sound.

What do you recommend?

 

bad lock actuator, there is a switch in the actuator that sends a signal to the security control unit via the multiplex system. get a factory manual and you will be able to test it using the multiplex system.

or just take it to the dealer