W209 Clk Convertible - where is the GPS aerial?

[davidwilson]

Got my local Indy to read out the fault code for the Comand system - it says that the GPS aerial lead is short circuit. I guess that means that the GPS aerial itself is shot - but where is it? I thought it was in the top bar of the windscreen - but tht's the coupe not the convertible.
Any ideas, anyone? *(And does anyone know what the part no is? (2003 CLK 320 W209)
Cheers
David

 

[davidwilson]

For the record, it's an amplifier inside the boot lid (just take the trim off and there it is, next to a gap that would be the TV aerial...)