Wiring diagram for parasitic battery drain

[matteb63]

My 2005 cls 500 has parasitic battery drain I’ve been able to narrow down to the 2 x7.5 fuses located in the boot ….they are for
F003
tv,tunner
tyre pressure
parktronic
and navagation processor

F008
left antenna amplifier module
alarm horn
alarmsignal horn with add.. battery
inclination sensor …..what ever that is?

when I pull these fuses there is a large drop in amps …
can anyone guide me through a test and track procedure to work out how to isolate the issue ..

without the fuses I have no navigation,radio or ability to lock car using key…
thanks

i haven’t been able to find a schematic of these circuits online

 

[firesnail]

I'm not familiar with the specific model, but on modern vehicles a battery drain when parked up is normal. How many Amps are each of those circuits using? Are you having trouble cranking the engine and if so, after how long since you last used the car?

 

[Hectors Dad]

My 2005 cls 500 has parasitic battery drain I’ve been able to narrow down to the 2 x7.5 fuses located in the boot ….they are for
F003
tv,tunner
tyre pressure
parktronic
and navagation processor

F008
left antenna amplifier module
alarm horn
alarmsignal horn with add.. battery
inclination sensor …..what ever that is?

when I pull these fuses there is a large drop in amps …
can anyone guide me through a test and track procedure to work out how to isolate the issue ..

without the fuses I have no navigation,radio or ability to lock car using key…
thanks

i haven’t been able to find a schematic of these circuits online

At a guess I would say it's the alarm siren that is doing it. Is it located inside one of the wheel arch liners? Water ingress over a period of years plays havoc with it.
Worth a look.