Outputs Connected to Electronic Battery Master Switch

Outputs Connected To Electronic Battery Master Switch




Terminal 30U
Supplies the fuse box in the luggage compartment.

Terminal 30B
Supplies the fuse box in the glove compartment.

Outputs Not Connected to Electronic Battery Master Switch
The following outputs are supplied by the PM separately from the Electronic Battery Master Switch.
- Rear window heater (HHS)
- Light Module (LM)
- Car Access System (CAS)
- DME
- Alarm system (DWA)
- Emergency power siren (SINE)
- Cigarette lighter (ZIG)
- Electrochromatic mirrors (EC)
- Park Distance Control (PDC)
- Rain/light sensor (RLS)
- Interior lighting (IB)
- Central locking trunk lid drive (ZV)
- Central locking, fuel filler flap (ZV)
- Trunk lid Soft Close Motor (SCA)

The advantages of this arrangement are:
- The exterior lighting can remain on (for safety reasons) even if the Electronic Battery Master switch is off.
- The alarm system is always armed.
- No additional fuses and wiring for actuators in nearby locations.

Fuses
The outputs for the rear window heater, KL R and KL 15, are not protected by conventional fuses. They are supplied via a power transistor (MOS-FET) in the Power Module.

By measuring the current and comparing it with stored threshold levels, the Power Module can detect a short circuit and disconnect the circuit it needed. The outputs for CAS, DWA and DME are protected by internal electronic fuses