siren

[sandy12]

Hi All, new ere so hello....ok 270 e class siren is continually making its noise keys wont switch it off nor did disconnecting the car battery. no lights are flashing, carnt turn ignition key once in its socket, any ideas??? I know where the siren is to disconnect and if I do this will the car work again??

Thanks in advance folks

 

[AMGeed]

The alarm siren has its own battery, so disconnecting the main battery won't stop it.

You can disconnect the alarm by unplugging it and you can still drive the car.
A new siren is around £100 and you need a security torx (T25 or T30) bit to undo the old one.

The fact you can't turn the ignition key is a bit concerning and hopefully not a fault with the EIS. Hopefully cured disconnecting the alarm.

Welcome to the forum.

 

[PobodY]

Technically disconnecting the main battery will cause the siren battery to run-down and eventually stop... but it will just charge again once the main battery is reconnected.

If you can't turn the key, that rather suggests that the alarm is sounding because it doesn't recognise the key doesn't it?