Fuse 8 keeps blowing

[coupefan]

CLK 200 Kompressor w209
Hi all once again and thanks for any advice. One day out of the blue my central locking would not work at all with the remote and I could not open the car. I used the "secret" key and it all works from the inside. Driving along and the radio will not pick up it's usual stations. (Antenna amplifier?) On checking all the fuses, fuse 8, in the boot (for the alarm?) keeps blowing as soon as I put a new one in (7.5amps).
Has anyone else had this issue and what would be your advice as to what to do?
I cannot understand as to why this would suddenly happen, dry conditions...the only clue ...the boot wouldn't open one day...and now I can't seem to lock it even with the little key...Can I lock it from inside the car? I have read that it could be the alarm siren?...I never even have heard this working previously...is there a way to easily disconnect that without a ramp, cause I don't have one. :-(. What else could be causing this annoying problem. Central locking is quite important and surely should have it's own fuse? Many thanks all, great forum.

 

[star]

Most probably the alarm siren, disconnect it to verify.

 

[coupefan]

alarm siren

Star, thanks for that. Is there an easy way to disconnect that without using a ramp / jack etc?
Cheers.

 

[star]

Star, thanks for that. Is there an easy way to disconnect that without using a ramp / jack etc?
Cheers.

Not really, it's placed to stop would be thieves doing the same.

 

[television]

Just remove the wheel, take out the bottom and mid screws on the rear section of the wheel arch liner and un plug it, or replace it.

 

[coupefan]

Just remove the wheel, take out the bottom and mid screws on the rear section of the wheel arch liner and un plug it, or replace it.

Thanks Television...driver's side wheel? Doesn't unplugging it set it off?

 

[television]

Passenger side under a cover, nope just unplug it and all will go back to normal with a new fuse.

 

[coupefan]

Thanks guys, I will have a go when my bad back gets better....groan ;-)

 

[star]

Star, thanks for that. Is there an easy way to disconnect that without using a ramp / jack etc?
Cheers.

Just remove the wheel, take out the bottom and mid screws on the rear section of the wheel arch liner and un plug it, or replace it.

Its easy when you jack the car up but you have to use one or a ramp.

 

[coupefan]

Help!

Help please!! Got the car jacked up...wheel off...but cannot get the fender shroud off....undone 4 bolts and there is a clip...but still cant get it off...the rear section right? Anyone have a diagram?

 

[Alex Crow]

Actually at floor pan level at the rear, just need to move the lower part of the rear section forward.

 

[coupefan]

managed to get that off now...pig of a job...now I have found the alarm siren but the connector wont unplug....push it away from you?...

 

[coupefan]

anyone know how to disconnect this siren?

 

[coupefan]

all done now...it pulls out from right to left...bit stiff...as is my back now. :-(
The worst part was getting the shroud off...those PITA push in clips !!
Thanks all for your patient help.

 

[coupefan]

Seems to me there is a drain pipe that drips down onto the alarm siren. In any case the siren rusts causing a short. Now if anyone from Mercedes would like to offer me a new replacement car....please email me :wink:

 

[television]

Well you have done the job now, the batteries inside the siren expire after a number of years, and they always stop once the main car battery has been disconnected

 

[Peter Seddon]

Hi I have the same problem, my car is a CLK Convertible 320 2005. Does unplugging the siren on the rear passenger side fix it and once you re-insert a new 7.5amo fuse into number 8 position the remote key fob works the central locking and radio stations come back. I know it's an old thread but wanted confirmation before I start that it's successful, regards Peter