99 SLK 230, when panic button is pressed the lights activate like they should in alarm mode however no audible alarm, has brand new PSE so that should not be the problem, where do I look first. Also another question, I have a speaker mounter on the passenger side below the glove box, what is that for???

 

Alarm horn is mounted in plenum (air box) in space immediately in front o fthe windscreen.

Some ATA (Security) systems have the horn with a battery in it so IF disconnected the horn goes off although nohing ist connected to it!

ISA ATA is different to Euro ATA.

Speaker under glovebox?
Some after market phone kit I imagine. Not OE.

Stuart

 

I guess the air box you are speaking of is were the horn is behind the grill, I looked everywhere else and did not see anything different anywhere else. Actually behind the grill are two small horns mounted, is it one of these?

 

Speaker behind kick panel is oe phone.
Horns behind grill are normal horns.
Alarm speaker is in plenum at rear of hood.

Bazzle

 

Thanks Bazzle.

Didn't realise therewas an OE phone installation but it makes sense.

Stuart.

 

Thanks for your help so far but does anyone have a picture of the location in a 99 SLK230, I just can't seem to locate it..I know it should not be that hard to locate but I can not seem to find it, thanks

 

Ok, how about what the plenumis, maybe a description

 

Hi Cheif17,

The plenum is the airbox below the grill at the the base of the windscreen.
Its where the air gets into the inside of the car.
The ATA security horn is bolted to the inside of the plenum with a bolt from the engine side of the firewall.(firewall separtes engine from plenumso you don't get smelly hot air into the car interior through the heater.

If you can't find it MAYBE it isn't there. i.e. somebody has removed it which might explain why it doesn't work!

Stuart

 

Found the alarm speaker, any idea of a site where you can find a replacement, 99 SLK 230