Help battery drain clk 320

[Mattyessex]

Someone please help me , my car was fine then all of a sudden battery drain , I have bought a new battery , alternator checked and fine , I park it up at nite then every now and then it won’t start ( no battery ) what’s causing this ???

 

[ajlsl600]

Try dissconecting yr siren,alarm. Or if thats not working? Flashers may come on at night but you dont know.I had this when my siren gave up.car was in garage .

 

[Mattyessex]

Thanks mate u are not the first to say that I’m goin to give it a go it’s do in my head in never know where it’s going to start in the mornin

 

[Mattyessex]

Try dissconecting yr siren,alarm. Or if thats not working? Flashers may come on at night but you dont know.I had this when my siren gave up.car was in garage .

Sorry to bother u do u know where I the siren is please

 

[ajlsl600]

In both my cases under front p/s front wheel arch cover next to front box member.