hi,
i have mercedes c220 2003 avantgarde.it has developed alarm/siren/beep sound from outside of the front passenger seat.there is not any message on display screen.Doors are working properly (lock and unlock).This is only happens when i lock the car and same time this beeping sound starts.No matter whatever you do it doesn't go away till 5mins. As long as you hit the locking key button from fob starts the beep.
please help..i will really appreciate the advice.
Thanks

 

the alarm siren is located in the front wheel well liner...either driver or passenger side. they do go bad and can either go off and sound, or not make any noise but the lights will flash. its pretty easy to replace. just a first guess. does the alarm sound when pressing and holding the panic button?

 

Hi,
Frist Thanks for reply.
Im in UK n here we don't have panic Button on key fob.

 

Hi,
thanks for replying
would it be help if i unplug battery for 10 min n so.
i can't see panic button cz im in UK.